Document Outline
- 1 FEATURES
- 2 GENERAL DESCRIPTION
- 3 ORDERING INFORMATION
- 4 QUICK REFERENCE DATA
- 5 BLOCK DIAGRAM
- 6 PINNING
- 7 FUNCTIONAL DESCRIPTION
- 7.1 Oscillators
- 7.2 FM signal channel
- 7.3 AM signal channel
- 7.4 Test mode
- 8 LIMITING VALUES
- 9 THERMAL CHARACTERISTICS
- 10 DC CHARACTERISTICS
- 11 AC CHARACTERISTICS
- 12 I2C-BUS PROTOCOL
- 12.1 I2C-bus specification
- 13 TEST AND APPLICATION INFORMATION
- 14 PACKAGE OUTLINES
- 15 SOLDERING
- 16 DATA SHEET STATUS
- 17 DEFINITIONS
- 18 DISCLAIMERS
- 19 PURCHASE OF PHILIPS I2C COMPONENTS
DATA SHEET
Product specification
File under Integrated Circuits, IC01
2001 Apr 12
INTEGRATED CIRCUITS
TEA6845AH; TEA6845H
New In Car Entertainment (NICE)
car radio
2001 Apr 12
2
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
CONTENTS
1
FEATURES
2
GENERAL DESCRIPTION
3
ORDERING INFORMATION
4
QUICK REFERENCE DATA
5
BLOCK DIAGRAM
6
PINNING
7
FUNCTIONAL DESCRIPTION
7.1
Oscillators
7.1.1
VCO
7.1.2
Crystal oscillator
7.1.3
PLL
7.2
FM signal channel
7.2.1
DAA
7.2.2
FM I/Q mixer
7.2.3
FM keyed AGC
7.2.4
FM IF amplifiers
7.2.5
FM demodulator
7.3
AM signal channel
7.3.1
AM tuner including mixer 1 and mixer 2
7.3.2
AM RF AGC and IF2 AGC
7.3.3
AM detector
7.3.4
AM AF or IF2 switch
7.3.5
AM noise detector and blanker
7.3.6
FM and AM level detector
7.4
Test mode
8
LIMITING VALUES
9
THERMAL CHARACTERISTICS
10
DC CHARACTERISTICS
11
AC CHARACTERISTICS
12
I
2
C-BUS PROTOCOL
12.1
I
2
C-bus specification
12.1.1
Test mode
12.1.2
Data transfer for the TEA6845
12.1.3
I
2
C-bus pull-up resistors
12.1.4
Frequency setting
12.2
I
2
C-bus protocol
12.2.1
Data transfer mode and IC address
12.2.2
Write mode: data byte 1
12.2.3
Write mode: data byte 2
12.2.4
Write mode: data byte 3
12.2.5
Write mode: data byte 4
12.2.6
Write mode: data byte 5
12.2.7
Write mode: data byte 6
12.2.8
Read mode: data byte 1
13
TEST AND APPLICATION INFORMATION
14
PACKAGE OUTLINES
15
SOLDERING
15.1
Introduction to soldering surface mount
packages
15.2
Reflow soldering
15.3
Wave soldering
15.4
Manual soldering
15.5
Suitability of surface mount IC packages for
wave and reflow soldering methods
16
DATA SHEET STATUS
17
DEFINITIONS
18
DISCLAIMERS
19
PURCHASE OF PHILIPS I
2
C COMPONENTS
2001 Apr 12
3
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
1
FEATURES
FM mixer for conversion of FM RF from 65 to 108 MHz
to IF of 10.7 MHz; the mixer provides inherent image
rejection
FM RF mixer can be set to receive weather band radio
up to 162.55 MHz; weather band radio flag output
AM mixer 1 for conversion of AM RF to AM IF1 of
10.7 MHz
LC tuner oscillator providing mixer frequencies for
FM mixer and AM mixer 1
AM mixer 2 for conversion of AM IF1 to AM IF2 of
450 kHz
Crystal oscillator providing mixer frequencies for
AM mixer 2 and reference for synthesizer PLL, IF count,
timing for Radio Data System (RDS) update and
reference frequency for car audio signal processor ICs
Fast synthesizer PLL tuning system with local control for
inaudible RDS updating
Timing function for RDS update algorithm and control
signal output for car audio signal processor ICs
(TEA688x, SAA77xx) or car radio integrated signal
processor IC (TEF6890H)
Digital auto alignment circuit for conversion of
LC oscillator tuning voltage to controlled alignment
voltage of FM antenna tank circuit
AGC PIN diode drive circuit for FM RF AGC; AGC
detection at FM mixer input; the AGC PIN diode drive
can be activated by the I
2
C-bus as a local or distance
function; AGC threshold is a programmable and keyed
function switchable via the I
2
C-bus
FM IF linear amplifiers with high dynamic input range
FM quadrature demodulator with automatic centre
frequency adjustment and Total Harmonic Distortion
(THD) compensation
Level detector for AM and FM with temperature
compensated output voltage; starting point and slope of
level output is programmable via the I
2
C-bus
AM RF PIN diode drive circuit; AGC threshold detection
at AM mixer 1 and IF2 AGC input; threshold is
programmable via the I
2
C-bus; AM IF2 AGC and
demodulator
AM AF output switchable to provide AM IF2 for
AM stereo decoder
AM noise blanker with blanking at AM IF2
Several test modes available for fast IC and system
tests.
2
GENERAL DESCRIPTION
The TEA6845 is a single IC with car radio tuner for
AM and FM intended for microcontroller tuning with the
I
2
C-bus. It provides the following functions:
AM double conversion receiver for LW, MW and SW
(31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and
IF2 = 450 kHz
FM single conversion receiver with integrated image
rejection for IF = 10.7 MHz capable of selecting US FM,
US weather, Europe FM, East Europe FM and Japan
FM bands.
3
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA6845AH
QFP64
plastic quad flat package; 64 leads (lead length 1.95 mm);
body 14
20
2.8 mm
SOT319-5
TEA6845H
QFP64
plastic quad flat package; 64 leads (lead length 1.95 mm);
body 14
20
2.8 mm
SOT319-2
2001 Apr 12
4
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
4
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
DDA(n)
analog supply voltage 1, 3, 4, 5
and 6
8
8.5
9
V
I
DDA(tot)
total analog supply current 1, 3, 4,
5 and 6
FM mode
45
56
67
mA
AM mode
39
49
59
mA
V
DDA2
analog supply voltage 2
4.75
5
5.25
V
I
DDA2
analog supply current 2
FM mode
6.5
8.1
9.8
mA
AM mode
4.7
5.9
7.1
mA
V
DDD
digital supply voltage
4.75
5
5.25
V
I
DDD
digital supply current
FM mode
18
23
28
mA
AM mode
18
23
28
mA
f
AM(ant)
AM input frequency
LW
0.144
-
0.288
MHz
MW
0.522
-
1.710
MHz
SW
5.85
-
9.99
MHz
f
FM(ant)
FM input frequency
65
-
108
MHz
f
FM(WB)(ant)
FM weather band input frequency
162.4
-
162.55
MHz
T
amb
ambient temperature
-
40
-
+85
C
AM overall system parameters (1
SFE10.7MS3; 1
SFR450H)
(S+N)/N
signal plus noise-to-noise ratio
m = 0.3
-
58
-
dB
THD
total harmonic distortion
m = 0.8
-
0.3
-
%
m = 0.9
-
0.5
-
%
FM overall system parameters (3
SFE10.7MS3)
(S+N)/N
signal plus noise-to-noise ratio
f = 22.5 kHz;
de-emphasis = 50
s
-
65
-
dB
THD
total harmonic distortion
f = 75 kHz
-
0.6
1
%
2001
Apr
12
5
Philips Semiconductors
Product specification
Ne
w
I
n
Car
Enter
tainment
(NICE)
car
r
adio
TEA6845AH; TEA6845H
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5
BLOCK DIA
GRAM
handbook, full pagewidth
MGU350
FM
AGC
AM
RF AGC
90
AM-NOISE
DETECTOR
PEAK/
AVERAGE
N1
2
90
N2
5/10
FM
I/Q MIXER
ANTENNA
DAA
AM
32
33
31
30
29
28
TUNING SYSTEM
10.25 MHz
WX
AM
MIXER 1
22
23
21
27
26
25
20
17
16
24
19
18
36
39
38
37
35
34
TEA6845AH
TEA6845H
15
14
13
IFAMP1
IFAMP2
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
MUTE
BLANK
PULSE
POWER
SUPPLY
IF
COUNT
LEVEL
DAA
AM
IF AGC
AM
LEVEL
FM
LIMITER/
LEVEL
I
2
C-BUS
DEMODULATOR
CRYSTAL
OSCILLATOR
AM IF2
FM IF
2 ms/20 ms
AM
MIXER2
12
11
10
7
9
8
6
2
3
4
5
51
VDDA1
VDDA2
FMMPX
RDSMPX
TRDSMUTE
AFSAMPLE
OSCTNK
VCOGND
DGND
CPOUT
DAAIN
AMMIX1IN2
VDDA5
VDDA6
MIX1OUT2
IFAMP1DEC
IFAMP1IN
IFAMP1OUT
IF1GND
FMLIMIN
AMMIX2OUT2
AMMIX2OUT1
XTAL2
XTAL1
QDET2
QDET1
IF2GND
SCL
SDA
XTALGND
Iref
Vlevel
CAFC
FMLIMDEC
Coffset
CAGC
IFAMP2DEC
IFAMP2IN
AMIF2IN
AMIF2DEC
AMNBHOLD
IFAMP2OUT
MIX1OUT1
DAATD
DAAOUT
T1FMAGC
T2FMAGC
IFMAGC
FMMIXIN2
RFGND
FMMIXIN1
IAMAGC
T2AMAGC
T1AMAGC
AMMIX1IN1
Vref(FMMIX)
fref
AMAFIF2
AFHOLD
VDDA3
VDDD
VDDA4
Vtune
OSCFDB
1
64
63
62
61
60
59
58
57
56
55
53
52
54
I
2
C-bus
43
49
48
47
46
50
45
44
VCO
42
40
41
Fig.1 Block diagram.
2001 Apr 12
6
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
6
PINNING
SYMBOL
PIN
DESCRIPTION
C
AGC
1
AMIFAGC capacitor
FMLIMDEC
2
FM limiter decoupling
FMLIMIN
3
FM limiter input (10.7 MHz)
AMIF2DEC
4
decoupling for AM IF2 input
IFAMP2OUT
5
IF amplifier 2 output (10.7 MHz)
AMNBHOLD
6
AM noise blanker hold output
AMIF2IN
7
AM IF2 input (450 kHz) for demodulator AGC and AM level detector
IF1GND
8
AM IF1 ground
IFAMP2IN
9
IF amplifier 2 input (10.7 MHz)
C
offset
10
DC feedback for offset compensation RDS mute
IFAMP2DEC
11
IF amplifier 2 decoupling and AGC capacitor for AM noise blanker
IFAMP1OUT
12
IF amplifier 1 output (10.7 MHz)
IFAMP1IN
13
IF amplifier 1 and AM mixer 2 input (10.7 MHz)
V
DDA6
14
analog supply voltage 6 (8.5 V) for IF amplifier 1 and 2
IFAMP1DEC
15
AM mixer 2 and FM IF amplifier 1 decoupling
MIX1OUT1
16
FM mixer and AM mixer 1 IF output high (10.7 MHz)
MIX1OUT2
17
FM mixer and AM mixer 1 IF output low (10.7 MHz)
V
DDA5
18
analog supply voltage 5 (8.5 V) for FM mixer and AM mixer 1
AMMIX1IN2
19
AM mixer 1 input 2
AMMIX1IN1
20
AM mixer 1 input 1
T1AMAGC
21
1st time constant output of AM front-end AGC
T2AMAGC
22
2nd time constant of AM front-end AGC
IAMAGC
23
PIN diode drive current output of AM front-end AGC
V
ref(FMMIX)
24
reference voltage for FM mixer
FMMIXIN1
25
input 1 of FM RF mixer
RFGND
26
RF ground
FMMIXIN2
27
input 2 of FM RF mixer
IFMAGC
28
PIN diode drive current output of FM front-end AGC
T2FMAGC
29
2nd time constant of FM front-end AGC
T1FMAGC
30
1st time constant of FM front-end AGC
DAAOUT
31
output of digital alignment circuit for antenna tank circuit
DAATD
32
temperature compensation diode of digital auto alignment circuit for antenna tank circuit
DAAIN
33
input of digital auto alignment circuit for antenna tank circuit
V
tune
34
tuning voltage
CPOUT
35
charge pump output
V
DDA4
36
analog supply voltage 4 (8.5 V) for tuning PLL
f
ref
37
reference frequency output for signal processor IC
V
DDD
38
digital supply voltage (5 V)
DGND
39
digital ground
VCOGND
40
VCO ground
2001 Apr 12
7
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
OSCFDB
41
VCO feedback
OSCTNK
42
VCO tank circuit
V
DDA3
43
analog supply voltage 3 (8.5 V) for VCO
AFSAMPLE
44
AF sample flag output for car audio signal processor IC
AFHOLD
45
AF hold flag output for car audio signal processor IC
TRDSMUTE
46
time constant for RDS update mute
AMAFIF2
47
AM demodulator AF output or IF2 output for AM stereo (multiplexed by I
2
C-bus)
RDSMPX
48
MPX output for RDS decoder and signal processor (not muted)
FMMPX
49
FM demodulator MPX output
V
DDA2
50
analog supply voltage 2 (5 V) for on-chip power supply
V
DDA1
51
analog supply voltage 1 (8.5 V) for on-chip power supply
SDA
52
I
2
C-bus data line input and output
SCL
53
I
2
C-bus clock line input
IF2GND
54
AM IF2 ground
QDET1
55
quadrature demodulator tank 1
QDET2
56
quadrature demodulator tank 2
C
AFC
57
FM demodulator AFC capacitor
V
level
58
level voltage output for AM and FM
XTAL1
59
crystal oscillator 1
XTALGND
60
crystal oscillator ground
XTAL2
61
crystal oscillator 2
I
ref
62
reference current for power supply
AMMIX2OUT1
63
AM mixer 2 output 1 (450 kHz)
AMMIX2OUT2
64
AM mixer 2 output 2 (450 kHz)
SYMBOL
PIN
DESCRIPTION
2001 Apr 12
8
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
handbook, full pagewidth
TEA6845AH
TEA6845H
MHB877
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CAGC
FMLIMDEC
FMLIMIN
AMIF2DEC
IFAMP2OUT
AMNBHOLD
AMIF2IN
IF1GND
IFAMP2IN
Coffset
IFAMP2DEC
IFAMP1OUT
IFAMP1IN
VDDA6
IFAMP1DEC
MIX1OUT1
MIX1OUT2
VDDA5
AMMIX1IN2
VDDA1
VDDA2
FMMPX
RDSMPX
AMAFIF2
TRDSMUTE
AFHOLD
AFSAMPLE
VDDA3
OSCTNK
OSCFDB
VCOGND
DGND
VDDD
fref
VDDA4
CPOUT
Vtune
DAAIN
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
20
21
22
23
24
25
26
27
28
29
30
31
32
64
63
62
61
60
59
58
57
56
55
54
53
52
AMMIX2OUT2
AMMIX2OUT1
I ref
XTAL2
XTALGND
XTAL1
V
level
C
AFC
QDET2
QDET1
IF2GND
SCL
SDA
AMMIX1IN1
T1AMAGC
T2AMAGC
IAMAGC
V
ref(FMMIX)
FMMIXIN1
RFGND
FMMIXIN2
IFMAGC
T2FMAGC
T1FMAGC
DAAOUT
DAATD
Fig.2 Pin configuration.
2001 Apr 12
9
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
7
FUNCTIONAL DESCRIPTION
7.1
Oscillators
7.1.1
VCO
The L and C tuned VCO provides the local oscillator signal
for both FM and AM mixer 1. It has a frequency range of
151.2 to 248.2 MHz.
7.1.2
C
RYSTAL OSCILLATOR
The crystal oscillator provides a 20.5 MHz signal that is
used for:
Reference frequency for frequency synthesizer PLL
Local oscillator for AM mixer 2
Reference frequency for the IF counter
Timing signal for the RDS update algorithm
Reference frequency (75.4 kHz) for the TEA6880H (car
audio signal processor - CASP) or TEF6890H (car radio
integrated signal processor).
7.1.3
PLL
Fast synthesizer PLL tuning system with local control for
inaudible RDS updating.
7.2
FM signal channel
7.2.1
DAA
FM RF Digital Auto Alignment (DAA) circuitry for the
conversion of the VCO tuning voltage to a controlled
alignment voltage for the FM antenna tank circuit.
7.2.2
FM I/Q
MIXER
FM quadrature mixer converts FM RF (65 to 162.55 MHz)
to IF of 10.7 MHz. The FM mixer provides inherent image
rejection and high RF sensitivity.
It is capable of tuning the US FM, US weather,
Europe FM, Japan FM and East Europe FM bands:
US FM = 87.9 to 107.9 MHz
US weather FM = 162.4 to 162.55 MHz
Europe FM = 87.5 to 108 MHz
Japan FM = 76.0 to 91 MHz
East Europe FM = 65.8 to 74 MHz.
7.2.3
FM
KEYED
AGC
FM contains keyed wide-band RF AGC. AGC detection
occurs at the FM mixer. The wide-band RF signal switches
a narrow band signal (IF) from the FM IF level detector
circuitry that controls the FM RF AGC block.
It includes an AGC PIN diode drive circuit for the FM RF
AGC. The PIN diode drive can be activated via the I
2
C-bus
as a local or distance function.
The AGC threshold is programmable and the keyed AGC
function is switchable via the I
2
C-bus.
7.2.4
FM IF
AMPLIFIERS
The two FM IF amplifiers provide 10 dB and 4 dB
amplification with high linearity and dynamic range.
7.2.5
FM
DEMODULATOR
The FM quadrature demodulator includes automatic
centre frequency adjustment and THD compensation.
7.3
AM signal channel
7.3.1
AM
TUNER INCLUDING MIXER
1
AND MIXER
2
The AM tuner is realized in a double conversion technique
and is capable of selecting LW, MW and SW bands.
AM mixer 1 converts AM RF to IF1 of 10.7 MHz, while
AM mixer 2 converts IF1 of 10.7 MHz to IF2 of 450 kHz:
LW = 144 to 288 kHz
MW = 530 to 1710 kHz (US AM band)
SW = 5.85 to 9.99 MHz (including the 31 m, 41 m and
49 m bands).
7.3.2
AM RF AGC
AND
IF2 AGC
The AM RF includes a PIN diode drive circuit. The
threshold detection points for AM AGC are performed at
AM mixer 1 and AM IF2. AGC thresholds are
programmable via the I
2
C-bus.
7.3.3
AM
DETECTOR
The AM detector provides AM level information and
AM AF or AM IF2.
7.3.4
AM AF
OR
IF2
SWITCH
The AM output provides either a detected AM AF or the
corresponding AM IF2 signal. The IF2 signal can be used
for AM stereo decoder processing.
2001 Apr 12
10
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
7.3.5
AM
NOISE DETECTOR AND BLANKER
The detection point for the AM noise blanker is the output
stage of AM mixer 1, while blanking is realized at the
output of the mixer 2.
Trigger sensitivity can be modified by changing the resistor
value at pin AMNBHOLD.
7.3.6
FM
AND
AM
LEVEL DETECTOR
FM and AM level detectors provide the temperature
compensated output voltage. The starting points and
slopes of the level detector outputs are programmable via
the I
2
C-bus.
7.4
Test mode
The test mode of the IC is activated by:
Sending the test byte (byte 5) to the IC
Connecting pin f
ref
through a 100 k
resistor to V
DDA1
Applying 50
A to pin f
ref.
If the test mode is enabled by pin f
ref
:
The settling time of the AM IF2 AGC is reduced to less
than 100 ms in the nominal application
The digital-to-analog converters for the antenna DAA
and the level DAA can be clocked directly by the SCL
line of the I
2
C-bus
The output at pin f
ref
can be selected by the I
2
C-bus:
TEA6880H or TEF6890H reference frequency, PLL
reference frequency or PLL programmable divider
output frequency
The RDS update control circuit can be clocked directly
via pin DAATD
Pin T1AMAGC can be used to enable the load PLL
circuit of the RDS update control circuit
Charge pumps can be set into 3-state mode.
8
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
Notes
1. To avoid damages and wrong operation it is necessary to keep all 8.5 V supply voltages at a higher level than any
5 V supply voltage. This is also necessary during power-on and power-down sequences. Precautions have to be
provided in such a way that interferences can not pull down the 8.5 V supply below the 5 V supply.
2. Machine model (R = 0
, C = 200 pF).
3. Human body model (R = 1.5 k
, C = 100 pF).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
DDA1
analog supply voltage 1 for on-chip power supply
-
0.3
+10
V
V
DDA2
analog supply voltage 2 for on-chip power supply
-
0.3
+6.5
V
V
DDA3
analog supply voltage 3 for VCO
-
0.3
+10
V
V
DDA4
analog supply voltage 4 for tuning PLL
-
0.3
+10
V
V
DDA5
analog supply voltage 5 for FM and AM RF
-
0.3
+10
V
V
DDA6
analog supply voltage 6 for IF amplifier 1 and 2
-
0.3
+10
V
V
DDD
digital supply voltage
-
0.3
+6.5
V
V
DD8.5-DD5
difference between any 8.5 V supply voltage and any
5 V supply voltage
note 1
-
0.3
-
V
T
stg
storage temperature
-
55
+150
C
T
amb
ambient temperature
-
40
+85
C
V
es
electrostatic handling voltage
note 2
-
200
+200
V
note 3
-
2000
+2000
V
2001 Apr 12
11
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
9
THERMAL CHARACTERISTICS
10 DC CHARACTERISTICS
V
DDA1
= V
DDA3
= V
DDA4
= V
DDA5
= V
DDA6
= 8.5 V; V
DDA2
= 5 V; V
DDD
= 5 V; T
amb
= 25
C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
R
th(j-a)
thermal resistance from junction to ambient
in free air
TEA6845AH
46
K/W
TEA6845H
48
K/W
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply voltage
V
DDA(n)
analog supply voltage 1, 3, 4, 5 and 6
8
8.5
9
V
V
DDA2
analog supply voltage 2
4.75
5
5.25
V
V
DDD
digital supply voltage
4.75
5
5.25
V
Supply current in FM mode
I
DDD
digital supply current
18
23
28
mA
I
DDA1
analog supply current 1 for on-chip power
supply
-
15
-
mA
I
DDA2
analog supply current 2 for on-chip power
supply
6.5
8.1
9.8
mA
I
DDA3
analog supply current 3 for VCO
-
6.5
-
mA
I
DDA4
analog supply current 4 for tuning PLL
test mode;
bit TMS3 = 1
-
2.9
-
mA
I
DDA5
analog supply current 5 for FM RF
-
5
-
mA
I
DDA6
analog supply current 6 for FM IF
amplifier 1 and 2
10
12
14
mA
I
MIX1OUT1
bias current of FM mixer output 1
4.8
6
7.2
mA
I
MIX1OUT2
bias current of FM mixer output 2
4.8
6
7.2
mA
Supply current in AM mode
I
DDD
digital supply current
18
23
28
mA
I
DDA1
analog supply current 1 for on-chip power
supply
-
17.5
-
mA
I
DDA2
analog supply current 2 for on-chip power
supply
4.7
5.9
7.1
mA
I
DDA3
analog supply current 3 for VCO
-
6.5
-
mA
I
DDA4
analog supply current 4 for tuning PLL
test mode;
bit TMS3 = 1
-
1.6
-
mA
I
DDA5
analog supply current 5 for RF
-
1.8
-
mA
I
MIX1OUT1
bias current of AM mixer 1 output 1
4.8
6
7.2
mA
I
MIX1OUT2
bias current of AM mixer 1 output 2
4.8
6
7.2
mA
I
AMMIX2OUT1
bias current of AM mixer 2 output 1
3.6
4.5
5.4
mA
I
AMMIX2OUT2
bias current of AM mixer 2 output 2
3.6
4.5
5.4
mA
2001 Apr 12
12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
11 AC CHARACTERISTICS
V
DDA1
= V
DDA3
= V
DDA4
= V
DDA5
= V
DDA6
= 8.5 V; V
DDA2
= 5 V; V
DDD
= 5 V; T
amb
= 25
C; see Figs 9 and 10; unless
otherwise specified.
On-chip power supply reference current generator: pin I
ref
V
o(ref)
output reference voltage
4
4.25
4.5
V
R
o
output resistance
8
11
13
k
I
o(max)
maximum output current
-
100
-
+100
nA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Voltage controlled oscillator
f
osc
oscillator frequency
151.2
-
248.2
MHz
C/N
carrier-to-noise ratio
f
osc
= 200 MHz;
f = 10 kHz
-
101
-
RR
ripple rejection
f
ripple
= 100 Hz;
V
DDA3(ripple)
= 100 mV (RMS)
f
osc
= 250 MHz
-
97
-
dB
f
osc
= 200 MHz
-
99
-
dB
F
EEDBACK INPUT
:
PIN
OSCFDB
V
i(bias)
input bias voltage
2.2
2.8
3.4
V
T
ANK CIRCUIT OUTPUT
:
PIN
OSCTNK
V
O
DC output voltage
5
6.1
7.2
V
V
o(rms)
AC output voltage
(RMS value)
f
osc
= 200 MHz
-
1.5
-
V
Crystal oscillator
f
xtal
crystal frequency
20.4996
20.5
20.5004
MHz
R
xtal
crystal motional
resistance
start of operating
-
-
500
C
xtal
crystal shunt capacitance
-
-
18
pF
C/N
carrier-to-noise ratio
f
xtal
= 20.5 MHz (10.25 MHz);
f = 10 kHz
-
112
-
C
IRCUIT INPUTS
:
PINS
XTAL1, XTAL2
AND
XTALGND
V
xtal(rms)
crystal voltage
(RMS value)
note 2
-
350
-
mV
V
XTAL1
,
V
XTAL2
DC bias voltage
1.7
2.1
2.5
V
R
i
real part of input
impedance
V
XTAL1
-
V
XTAL2
= 1 mV;
note 1
-
500
-
-
C
i
input capacitance
note 1
8
10
12
pF
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
dBc
Hz
------------
dBc
Hz
------------
2001 Apr 12
13
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
I
XTALGND
crystal oscillator circuit
current
start-up at
V
XTAL1
= V
XTAL2
= 2.1 V
-
9
-
mA
operating at
V
XTAL1
-
V
XTAL2
=
400 mV
-
1.5
-
mA
Oscillator divider N1
N1
oscillator divider ratio
FM mode:
standard, Europe and local
-
2
-
weather band (WX)
-
1
-
Oscillator divider N2
N2
oscillator divider ratio
AM mode
SW
-
10
-
LW and MW
-
5
-
Synthesizer
P
ROGRAMMABLE DIVIDER
N
prog
programmable divider
ratio
512
-
32767
N
step
programmable divider step
size
-
1
-
R
EFERENCE FREQUENCY DIVIDER
N
ref
crystal oscillator divider
ratio
f
xtal
= 20.5 MHz
f
ref
= 100 kHz
-
205
-
f
ref
= 50 kHz
-
410
-
f
ref
= 25 kHz
-
820
-
f
ref
= 20 kHz
-
1025
-
f
ref
= 10 kHz
-
2050
-
C
HARGE PUMP
:
PIN
CPOUT
I
sink(cp1)l
low charge pump 1 peak
sink current
FM weather band mode;
0.4 V < V
CPOUT
< 7.6 V
200
300
400
A
I
source(cp1)l
low charge pump 1 peak
source current
FM weather band mode;
0.4 V < V
CPOUT
< 7.6 V
-
400
-
300
-
200
A
I
sink(cp1)h
high charge pump 1 peak
sink current
AM stereo mode; N2 = 10
(LW and MW);
0.4 V < V
CPOUT
< 7.6 V
0.7
1
1.3
mA
I
source(cp1)h
high charge pump 1 peak
source current
AM stereo mode; N2 = 10
(LW and MW);
0.4 V < V
CPOUT
< 7.6 V
-
1.3
-
1
-
0.7
mA
I
sink(cp2)
charge pump 2 peak sink
current
FM standard mode;
0.3 V < V
CPOUT
< 7.1 V
100
130
160
A
I
source(cp2)
charge pump 2 peak
source current
FM standard mode;
0.3 V < V
CPOUT
< 7.1 V
-
160
-
130
-
100
A
I
Z(cp1)
, I
Z(cp2)
charge pump 1 or 2
current in 3-state
0 < V
CPOUT
< 8.5 V
-
5
-
+5
nA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 Apr 12
14
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
C
HARGE PUMP
:
PIN
V
tune
I
sink(cp3)
charge pump 3 peak sink
current
FM standard mode;
0.4 V < V
tune
< 7.6 V
2.1
3
3.9
mA
I
source(cp3)
charge pump 3 peak
source current
FM standard mode;
0.4 V < V
tune
< 7.6 V
-
3.9
-
3
-
2.1
mA
I
Z(cp3)
charge pump 3 current in
3-state
0 < V
tune
< 8.5 V
-
5
-
+5
nA
Antenna Digital Auto Alignment (DAA)
DAA
INPUT
:
PIN
DAAIN
I
bias(cp)
charge pump buffer input
bias current
FM mode;
0.4 V < V
DAAIN
< 8.0 V
-
10
-
+10
nA
AM mode;
0 V < V
DAAIN
< 8.5 V
-
10
-
+10
nA
V
i(cp)
charge pump buffer input
voltage
0
-
8.5
V
DAA
OUTPUT
:
PIN
DAAOUT; note 2
V
o(AM)
DAA output voltage in
AM mode
-
-
0.3
V
V
o(FM)
DAA output voltage in
FM mode
V
DAAIN
= 4.0 V;
V
DAATD
= 0.7 V
minimum value
-
-
0.5
V
bits DAA[6:0] set to logic 0
1.5
1.65
1.8
V
value: data
byte 3 = 10101011
3.8
4
4.2
V
maximum value;
bits DAA[6:0] set to logic 1
8
-
8.5
V
V
DAAIN
= 3.0 V;
V
DAATD
= 0.7 V; bits DAA[6:0]
set to logic 1
6.2
6.5
6.8
V
V
DAAIN
= 2 V
data byte 3 = 11010101
3
3.3
3.6
V
data byte 3 = 10101010
1.8
2
2.2
V
V
o(n)
DAA output noise voltage
FM mode; V
DAAIN
= 4 V;
data byte 3: bit 6 = 1,
bits 5 to 0 = 0;
B = 300 Hz to 15 kHz
-
30
100
V
V
o (T)
DAA output voltage
variation with temperature
T
amb
=
-
40 to +85
C;
data byte 3 = 10101011;
V
DAATD
= 0.7 V
-
8
-
+8
mV
V
o (step)
DAA step accuracy
FM mode; V
DAAOUT
< 8.0 V;
n = 0 to 127
0.5V
LSB
V
LSB
1.5V
LSB
mV
I
o(sink)
DAA output sink current
0.2 V < V
DAAOUT
< 8.25 V
50
-
-
A
I
o(source)
DAA output source current
-
-
-
50
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 Apr 12
15
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
t
st
DAA output settling time
0.2 V < V
DAAOUT
< 8.25 V;
C
L
= 270 pF
-
-
30
s
RR
ripple rejection
f
ripple
= 100 Hz; V
DDA4
= 1 mV
-
50
-
dB
C
L
DAA output load
capacitance
V
DAAOUT
< 8.0 V; FM mode
-
-
270
pF
DAA
TEMPERATURE COMPENSATION
:
PIN
DAATD
I
source
compensation diode
source current
0.2 V < V
DAATD
< 1.5 V
-
50
-
40
-
30
A
TC
source
temperature coefficient of
compensation diode
source current
0.2 V < V
DAATD
< 1.5 V;
T
amb
=
-
40 to +85
C
-
3
10
-
10
-
+3
10
-
10
K
-
1
IF counter (FM IF or AM IF2 counter)
N
IF
IF counter length for
AM and FM
-
8
-
bit
T
count(IF)
IF counter period
data byte 4: bit 7 = 1
-
2
-
ms
data byte 4: bit 7 = 0
-
20
-
ms
R
precount
FM IF counter prescaler
ratio
data byte 4: bit 3 = 1
-
10
-
data byte 4: bit 3 = 0
-
100
-
Reference frequency for car sound processor IC; note 3
R
EFERENCE FREQUENCY DIVIDER
N
ref
crystal oscillator divider
ratio
-
272
-
f
ref
reference frequency
f
xtal
= 20.5 MHz
-
75.368
-
kHz
V
OLTAGE GENERATOR
;
PIN
f
ref
V
o(p-p)
AC output voltage
(peak-to-peak value)
60
100
170
mV
V
O
DC output voltage
3.2
3.4
3.9
V
R
o
output resistance
-
-
50
k
R
L(min)
minimum load resistance
1
-
-
M
AM signal channel
AM RF AGC
STAGE INPUTS
:
PINS
AMMIX1IN1
AND
AMMIX1IN2
V
i(p)
RF input voltage for AGC
start level (peak value)
data byte 5: bit 5 = 0, bit 6 = 0
-
150
-
mV
data byte 5: bit 5 = 1, bit 6 = 0
-
275
-
mV
data byte 5: bit 5 = 0, bit 6 = 1
-
400
-
mV
data byte 5: bit 5 = 1, bit 6 = 1
-
525
-
mV
AM IF AGC
STAGE INPUTS
:
PINS
AMIF2IN
AND
AMIF2DEC
V
i(p)
IF2 input voltage (peak
value)
AGC start level
0.20
0.27
0.35
V
AM RF AGC
CURRENT GENERATOR OUTPUT
:
PIN
IAMAGC
I
sink(max)
maximum AGC sink
current
V
AMMIX1IN1
> 500 mV
(peak value)
-
15
-
mA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 Apr 12
16
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
R
o
output resistance
I
IAMAGC
= 1
A
1
-
-
M
C
o
output capacitance
-
5
7
pF
AM RF AGC
PEAK DETECTOR
:
PIN
T2AMAGC
I
att
attack current AGC peak
detector
data byte 5: bit 5 = 1,
bit 6 = 1;
AM mixer 1 input V
i
= 1 V;
V
T2AMAGC
-
GND
= 3 V;
V
AMIF2IN
-
AMIF2DEC
= 0 V
-
3.15
-
mA
I
dec
decay current AGC peak
detector
data byte 5: bit 5 = 1,
bit 6 = 1;
AM mixer 1 input V
i
= 0 V;
V
T2AMAGC
-
AMMIN1IN2
= 0.25 V;
V
T2AMAGC
-
GND
= 3 V;
V
AMIF2IN
-
AMIF2DEC
= 0 V
-
2.6
-
A
AM
MIXER
1 (IF1 = 10.7 MH
Z
)
Mixer inputs: pins AMMIX1IN1and AMMIX1IN2
R
i
input resistance
note 4
50
70
100
k
C
i
input capacitance
note 4
-
5
7
pF
V
I
DC input voltage
2.3
2.7
3.1
V
V
i(max)
maximum voltage on
pin AMMIX1IN1
1 dB compression point of
AM mixer 1 output
(peak-to-peak)
500
-
-
mV
Mixer outputs: pins MIX1OUT1 and MIXOUT2
R
o
output resistance
note 5
100
-
-
k
C
o
output capacitance
note 5
-
5
7
pF
V
o(max)(p-p)
maximum output voltage
(peak-to-peak value)
12
15
-
V
I
bias
mixer bias current
AM mode
4.8
6
7.2
mA
Mixer
g
m(conv)
conversion
transconductance
2.0
2.55
3.2
g
m(conv)(T)
conversion
transconductance
variation with temperature
-
-
9
10
-
4
-
K
-
1
IP3
3rd-order intermodulation
R
L
= 2.8 k
(AC load between
output pins)
135
138
-
dB
V
IP2
2nd-order intermodulation
R
L
= 2.8 k
(AC load between
output pins)
-
170
-
dB
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
I
MIXOUT1
V
FMMIXIN1
FMMIXIN2
---------------------------------------------------
mA
V
---------
g
m(conv)
g
m(conv)
T
---------------------------------
2001 Apr 12
17
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
V
i(n)(eq)
equivalent input noise
voltage
band limited noise;
R
gen
= 750
; R
L
= 2.8 k
(AC load between output pins)
-
5.8
-
F
noise figure of AM mixer 1
-
4.5
7.1
dB
W
EATHER BAND FLAG
:
PIN
T1AMAGC
I
L(max)
maximum load current
-
5
-
+5
A
V
o(max)
maximum output voltage
for FM mode
measured with respect to
pin RFGND
0
-
0.5
V
V
o(min)
minimum output voltage
for WX mode
measured with respect to
pin RFGND
5.1
6.0
6.9
V
AM
MIXER
2 (IF2 = 450
K
H
Z
)
Mixer inputs: pins IFAMP1IN and IFAMP1DEC
R
i
input resistance
note 6
270
330
390
C
i
input capacitance
note 6
-
5
7
pF
V
I
DC voltage
2.4
2.7
3
V
V
i(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
AM mixer 2 output
(peak-to-peak)
1.1
-
-
V
Mixer outputs: pins AMMIX2OUT1 and AMMIXOUT2
R
0
output resistance
note 7
100
-
-
k
C
o
output capacitance
note 7
-
5
7
pF
V
o(max)(p-p)
maximum output voltage
(peak-to-peak value)
V
DDA
= 8.5 V
12
15
-
V
I
bias
mixer bias current
AM mode
3.6
4.5
5.4
mA
Mixer
g
m(conv)
conversion
transconductance
1.3
1.6
1.9
g
m(conv)(T)
conversion
transconductance
variation with temperature
-
-
9
10
-
4
-
K
-
1
IP3
3rd-order intermodulation
R
L
= 4 k
(AC load between
output pins)
134
137
-
dB
V
IP2
2nd-order intermodulation
R
L
= 4 k
(AC load between
output pins)
-
170
-
dB
V
V
i(n)(eq)
equivalent input noise
voltage
R
gen
= 330
; R
L
= 4 k
(AC load between output pins)
-
15
22
F
noise figure of AM mixer 2
-
16
19.5
dB
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
nV
Hz
------------
I
AMMIX2OUT1
V
IFAMP1IN
-------------------------------
mA
V
---------
g
m(conv)
g
m(conv)
T
---------------------------------
nV
Hz
------------
2001 Apr 12
18
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
AM IF2 AGC
STAGE
:
PINS
AMIF2IN
AND
AMIF2DEC; note 8
V
i
input voltage
for
=
-
10 dB audio
attenuation
AM soft mute on
-
75
120
V
AM soft mute off
-
6
10
V
V
AGC(start)
AGC start voltage
input carrier voltage
-
14
30
V
V
AGC(stop)
AGC stop voltage
maximum input peak voltage
1
-
-
V
V
AGC(ctrl)
AGC control voltage
V
i
= 1 mV
4.1
4.3
4.7
V
AGC
AGC range
between start and stop of
AGC; m = 0.8
-
89
-
dB
R
i
input resistance
1.8
2
2.2
k
C
i
input capacitance
-
-
5
pF
AM
DETECTOR
V
sens(rms)
sensitivity voltage
(RMS value)
m = 0.3; f
mod
= 400 Hz;
B
AF
= 2.5 kHz; R
gen
= 2 k
;
note 8
(S+N)/N = 26 dB
-
45
65
V
(S+N)/N = 46 dB
-
600
900
V
(S+N)/N
maximum signal plus
noise-to-noise ratio
m = 0.3; f
mod
= 400 Hz;
B
AF
= 2.5 kHz; R
gen
= 2 k
54
60
-
dB
THD
total harmonic distortion
B
AF
= 2.5 kHz; C
AGC
= 22
F;
AM IF2 AGC input
V
i
= 100
V to 500 mV (RMS)
m = 0.8; f
mod
= 400 Hz
-
0.5
1
%
m = 0.9; f
mod
= 400 Hz
-
1
2
%
m = 0.8; f
mod
= 100 Hz
-
1.25
2.5
%
m = 0.9; f
mod
= 100 Hz
-
1.75
3.5
%
RR
ripple rejection
V
DDA2(ripple)
= 100 mV (RMS);
f
ripple
= 100 Hz;
30
40
-
dB
t
sw
FM to AM switching time
C
AGC
= 22
F
-
1000
1500
ms
t
settle
AM AGC settling time
C
AGC
= 22
F
normal operation
-
-
1800
ms
test mode
-
-
180
ms
Output: pin AMAFIF2
V
o(rms)
AM IF2 output voltage
(RMS value)
AM stereo; m = 0
minimum at V
i
= 14
V
1.5
3
4.5
mV
maximum at V
i
= 5.0 mV
130
180
230
mV
AM mono; m = 0.3;
f
mod
= 400 Hz;
V
i
= 100
V to 500 mV (RMS)
240
290
340
mV
R
o
output resistance
AM stereo
-
-
500
AM mono
-
-
500
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 Apr 12
19
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
C
o
output capacitance
AM mono
-
5
7
pF
AM IF2
LEVEL DETECTOR OUTPUT
:
PIN
V
level
; see Fig.3
V
level
DC output voltage
V
i
= 10
V to 1 V
0
-
7
V
V
i
< 1
V; standard setting of
level DAA and level slope
0.1
0.5
0.9
V
V
i
= 1.4 mV; standard setting
of level DAA
1.6
2.2
2.8
V
V
level
step size for adjustment of
level starting point
standard setting of level slope
30
40
50
mV
V
level(slope)
slope of level voltage
standard setting of level slope
650
800
950
V
step
step size for adjustment of
level starting point
V
i
=1.4 mV
45
60
75
B
level
bandwidth of level output
voltage
200
300
-
mV
R
o
output resistance
-
-
500
RR
ripple rejection
V
DDA1(ripple)
= 100 mV (RMS);
f
ripple
= 100 Hz;
-
40
-
dB
AM
NOISE BLANKER
; see Fig.4
Threshold: pin AMNBHOLD
V
O
DC output voltage
4.3
4.6
5.1
V
t
sup
suppression time
6
7.5
10
s
f
trigger
trigger sensitivity
frequency
V
p
= 200 mV (peak);
V
level
< 1.8 V
-
1000
-
Hz
V
p
= 200 mV (peak);
V
level
> 2.2 V
-
-
100
Hz
V
p
= 20 mV (peak)
-
-
100
Hz
Noise detector output: pin TRDSMUTE
I
sink(AGC)
AM noise blanker AGC
sink current
V
TRDSMUTE
= 3 V
35
50
65
A
V
AGC
AM noise blanker AGC
voltage
AM mixer 1 input V
i
= 0 V
1.9
2.2
2.5
V
FM signal channel
FM RF AGC
Inputs: pins FMMIXIN1 and FMMIXIN2; note 9
V
i(RF)(rms)
RF input voltage for start
of wide-band AGC
(RMS value)
data byte 5: bit 5 = 0, bit 6 = 0
-
4
-
mV
data byte 5: bit 5 = 1, bit 6 = 0
-
8
-
mV
data byte 5: bit 5 = 0, bit 6 = 1
-
12
-
mV
data byte 5: bit 5 = 1, bit 6 = 1
-
16
-
mV
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
mV
20 dB
---------------
mV
20 dB
---------------
2001 Apr 12
20
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
AGC peak detector output: pin T1FMAGC
I
ch
charge current
-
350
-
600
-
850
A
I
dis
discharge current
15
25
35
A
PIN diode drive output: pin IFMAGC
I
drive
drive current
V
o
= 0.5 to 4.0 V
8
11.5
15
mA
Level voltage output: pin V
level
V
th
threshold voltage for
narrow-band AGC
data byte 5: bit 7 = 1;
standard setting of level DAA
500
950
1400
mV
FM RF
MIXER
Reference voltage: pin V
ref(FMMIX)
V
ref
reference voltage
FM mode
6.5
7.1
7.9
V
AM mode
2.7
3.1
3.4
V
Inputs: pins FMMIXIN1 and FMMIXIN2; note 9
V
i(RF)(max)
maximum RF input
voltage
1 dB compression point of
FM mixer output voltage
(peak-to-peak value)
70
100
-
mV
V
i(n)(eq)
equivalent input noise
voltage
R
gen
= 600
; R
L
= 2.8 k
;
noise of R
gen
not included
-
2.6
3.1
R
i
input resistance
-
1.4
-
k
C
i
input capacitance
-
5
7
pF
Outputs: pins MIX1OUT1 and MIX1OUT2; note 5
R
o
output resistance
100
-
-
k
C
o
output capacitance
-
5
7
pF
I
bias
mixer bias current
FM mode
4.8
6
7.2
mA
V
o(max)(p-p)
maximum output voltage
(peak-to-peak value)
3
-
-
V
FM mixer
g
m(conv)
conversion
transconductance
8.5
12.5
18
g
m(conv)(T)
conversion
transconductance
variation with temperature
-
-
1
10
-
3
-
K
-
1
F
noise figure
-
3
4.6
dB
IP3
3rd-order intermodulation
116
119
-
dB
V
IRR
image rejection ratio
25
30
-
dB
IF
AMPLIFIER
1
G
gain
R
L
= 330
; V
i
= 1 mV;
note 10
13.5
15.5
17.5
dB
F
noise figure
-
10
13
dB
IP3
3rd-order intermodulation
117
120
-
dB
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
nV
Hz
------------
mA
V
---------
2001 Apr 12
21
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Inputs: pins IFAMP1IN and IFAMP1DEC; note 10
V
i(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
IF amplifier 1 output voltage
(peak value)
200
-
-
mV
V
i(n)(eq)
equivalent input noise
voltage
R
gen
= 330
; R
L
= 330
;
noise of R
gen
not included
-
8
10
R
i
input resistance
270
330
390
C
i
input capacitance
-
5
7
pF
Output: pin IFAMP1OUT
R
o
output resistance
270
330
390
C
o
output capacitance
-
5
7
pF
V
o(max)(p)
maximum output voltage
(peak value)
1.2
1.5
-
V
IF
AMPLIFIER
2
G
gain
R
L
= 330
; V
i
= 1 mV;
note 11
6.5
8.5
10.5
dB
F
noise figure
-
13
15
dB
IP3
3rd-order intermodulation
127
130
-
dB
V
Inputs: pins IFAMP2IN and IFAMP2DEC; note 11
V
i(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
IF amplifier 2 output voltage
(peak value)
500
-
-
mV
V
i(n)(eq)
equivalent input noise
voltage
R
gen
= 330
; R
L
= 330
;
noise of R
gen
not included
-
10
13
R
i
input resistance
270
330
390
C
i
input capacitance
-
5
7
pF
Output: pin IFAMP2OUT
R
o
output resistance
270
330
390
C
o
output capacitance
-
5
7
pF
V
o(max)(p)
maximum output voltage
(peak value)
1.2
1.5
-
V
FM demodulator and level detector; see Figs 5 and 6
FM
LIMITER
Inputs: pins FMLIMIN and FMLIMDEC; note 12
G
gain
R
gen
= 50
74
80
-
dB
R
i
input resistance
270
330
390
k
C
i
input capacitance
-
5
7
pF
Outputs: pins QDET1 and QDET2
V
o(p-p)
output voltage
(peak-to-peak value)
measured between output
pins
500
700
-
mV
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
nV
Hz
------------
nV
Hz
------------
2001 Apr 12
22
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
FM
DEMODULATOR
Limiter decoupling: pin FMLIMDEC
R
L
load resistance
20
-
-
k
C
L
load capacitance
-
-
50
pF
RDS MPX inputs: pins FMLIMIN and FMLIMDEC; note 12
V
start(lim)(rms)
start of limiting of RDS
MPX output voltage
(RMS value)
AF
=
-
3 dB
-
10
15
V
RDS MPX output: pin QRDSMPX
V
o(rms)
RDS MPX output voltage
(RMS value)
f = 22.5 kHz; f
mod
= 57 kHz;
V
i
= 20
V to 1 V; note 12
180
230
280
mV
I
o(max)
maximum RDS MPX
output current
-
-
100
A
R
o
output resistance
-
-
500
B
bandwidth RDS MPX
output
C
L
= 0; R
L
> 20 k
200
300
-
kHz
PSRR
power supply ripple
rejection
f
ripple
= 100 Hz to 20 kHz
-
40
-
dB
FM RDS inputs: pins FMLIMIN and FMLIMDEC; note 12
V
start(lim)(rms)
start of limiting of MPX
output voltage
(RMS value)
AF
=
-
3 dB
-
10
15
V
V
o(sens)(rms)
sensitivity for MPX output
voltage (RMS value)
f = 22.5 kHz; f
mod
= 1 kHz;
de-emphasis = 75
s
(S+N)/N = 26 dB
-
10
15
V
(S+N)/N = 46 dB
-
50
75
V
FM MPX output: pin FMMPX; note 12
V
o(rms)
MPX output voltage
(RMS value)
f = 22.5 kHz; f
mod
= 1 kHz;
de-emphasis = 75
s;
V
i
= 20
V to 1 V;
180
230
280
mV
AM
AM suppression of MPX
output
f = 22.5 kHz; f
mod
= 1 kHz;
m = 0.3; de-emphasis = 75
s
V
i
= 500
V to 300 mV
50
60
-
dB
V
i
= 20 to 500
V
-
40
-
dB
V
i
= 300 mV to 1 V
-
40
-
dB
I
o(max)
maximum MPX output
current
-
-
100
A
(S+N)/N
maximum signal plus
noise-to-noise ratio of
MPX output voltage
f = 22.5 kHz; f
mod
= 1 kHz;
de-emphasis = 75
s;
V
i
= 10 mV;
67
70
-
dB
THD
total harmonic distortion of
MPX output voltage
f = 75 kHz; f
mod
= 1 kHz;
de-emphasis = 75
s;
V
i
= 200
V to 800 mV
-
0.35
0.7
%
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2001 Apr 12
23
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
B
bandwidth MPX output
C
L
= 0; R
L
> 20 k
200
-
-
kHz
PSRR
power supply ripple
rejection
f
ripple
= 100 Hz to 20 kHz
-
40
-
dB
R
L(min)
minimum load resistance
20
-
-
k
R
o(max)
maximum output
resistance
-
-
500
C
L(max)
maximum load
capacitance
-
-
50
pF
MPX
MUTE
mute
muting depth
during RDS update
60
80
-
dB
t
att
attack time MPX mute
C
TRDSMUTE
= 10 nF
0.75
1
1.25
ms
t
decay
decay time MPX mute
C
TRDSMUTE
= 10 nF
0.75
1
1.25
ms
RDS update: pin TRDSMUTE
I
dis
discharge current
V
o
= 3 V; audio output muted
24
32
38
A
I
ch
charge current
V
o
= 3 V; audio output not
muted
-
24
-
32
-
38
A
D
EMODULATOR
AFC
G
AFC
AFC gain
f = 100 kHz
28
32
-
dB
RDS MPX output: pin RDSMPX; note 12
V
offset(DC)
residual DC offset voltage
L
demod
= typical value
V
i
= 10 to 80
V
-
0.1
1
V
V
i
= 80
V to 800 mV
-
10
30
mV
L
demod
=
6%
V
i
= 10 to 80
V
-
0.240
1
V
V
i
= 80
V to 800 mV
-
25
500
mV
FM IF
LEVEL DETECTOR OUTPUT
:
PIN
V
level
; note 12
V
level
DC output voltage
V
i
= 10
V to 1 V
0
-
7
V
V
i
< 1
V; standard setting of
level DAA
0.2
0.6
1.1
V
V
i
= 1 mV; standard setting of
level DAA
1.4
1.9
2.5
V
V
level
level starting point for
adjustment of step size
standard setting of level slope
30
40
50
mV
V
level(slope)
slope of level voltage
standard setting of level slope
650
800
950
V
step
level slope adjustment of
step size
V
i
= 1 mV
45
50
75
V
level(B)
bandwidth of level output
voltage
V
i
= 10 mV; f
mod
= 22.5 kHz;
standard setting of DAA
200
300
-
mV
R
o
output resistance
-
-
500
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
mV
20 dB
---------------
mV
20 dB
---------------
2001 Apr 12
24
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Notes
1. Measured between pins XTAL1 and XTAL2.
2. DAA conversion gain formula:
where n = 0 to 127.
3. Reference frequency pin f
ref
:
a) R
ext
= 68 k
connected to ground, activates the 2nd I
2
C-bus address
b) R
ext
= 100 k
connected to V
DDA1
, sets the IC into test mode.
4. Input parameters of AM mixer 1 measured between pins AMMIX1IN1 and AMMIX1IN2.
5. Output parameters of FM mixer and AM mixer 1 measured between pins MIX1OUT1 and MIX1OUT2.
6. Input parameters of AM mixer 2 measured between pins IFAMP1IN and IFAMP1DEC.
7. Output parameters of AM mixer 2 measured between pins AMMIX2OUT1 and AMMIX2OUT2.
8. Input parameters of AM IF2 measured between pins AMIF2IN and AMIF2DEC.
9. Input parameters of FM mixer measured between pins FMMIXIN1 and FMMIXIN2.
10. Input parameters of IF amplifier 1 measured between pins IFAMP1IN and IFAMP1DEC.
11. Input parameters of IF amplifier 2 measured between pins IFAMP2IN and IFAMP2DEC.
12. Input parameters of FM limiter measured between pins FMLIMIN and FMLIMDEC.
RR
ripple rejection
V
DDA1(ripple)
= 100 mV (RMS);
f
ripple
= 100 Hz
-
40
-
dB
RDS update
Output: pin AFHOLD
I
sink(max)
maximum sink current
after first bus transmission
with AF = 1 (start of RDS
update); V
o
= 0.5 V
1.0
1.2
1.4
mA
Output: pin AFSAMPLE
I
sink(max)
maximum sink current
no RDS update in progress;
V
o
= 0.5 V
1.0
1.2
1.4
mA
Test mode; note 3
Temperature compensation diode: pin DAATD
V
i(ext)
external input voltage to
clock state machine
V
DAATD(L)
= 2.5 V;
V
DAATD(H)
= 3.5 V
2.5
-
3.5
V
Clock input: pin SCL
V
i(ext)
external input voltage to
clock DAA
V
SCL(L)
= 0 V; V
SCL(H)
= 5 V
0
-
5
V
Time constant output: pin T1AMAGC
V
pulse
enabling voltage of load
PLL signal
pin f
ref
in test mode
5.1
6
6.9
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
DAAOUT
2
0.75
n
128
----------
0.25
+
V
DAAIN
V
DAATD
+
(
)
V
DAATD
=
2001 Apr 12
25
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Fig.3 AM level output voltage (DAA) as a function of AM level circuit input voltage.
(1) Level DAA setting byte 6 = FFH.
(2) Level DAA setting byte 6 = 84H (standard setting).
(3) Level DAA setting byte 6 = 00H.
handbook, full pagewidth
6
2
0
10
-
3
10
-
2
10
-
1
1
10
10
2
10
3
MHB484
4
3
1
5
Vi (mV)
Vlevel
(V)
(2)
(3)
(1)
V
i
= V
AMIF2IN
-
V
AMIF2DEC
handbook, full pagewidth
MHB876
1 k
1 k
100
50
100
58
59
61
64
63
13
4 V
16
oscilloscope,
counter
8.5 V
8.5 V
test signal
4.7 nF
17
TEA6845AH
TEA6845H
Vlevel
Trep
3 V
VP
VP
Fig.4 Test circuit for AM noise blanker.
Test signal: T
rep
= 2 ms, t
r
< 50 ns, t
f
< 50 ns, and duty factor 50%.
2001 Apr 12
26
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Fig.5 FM level output voltage (DAA) as a function of FM limiter and level circuit input voltage.
(1) Level DAA setting byte 6 = FFH.
(2) Level DAA setting byte 6 = 84H (standard setting).
(3) Level DAA setting byte 6 = 00H.
handbook, full pagewidth
6
2
0
10
-
3
10
-
2
10
-
1
1
10
10
2
10
3
MHB486
4
3
1
5
Vi (mV)
Vlevel
(V)
(2)
(3)
(1)
V
i
= V
FMLIMIN
-
V
FMLIMDEC
.
2001 Apr 12
27
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Fig.6 (S+N)/N, THD and level output voltage for FM mode as a function of FM demodulator input voltage.
(1) Output voltage for FMMPX and RDSMPX: fIF = 10.7 MHz;
f = 22.5 kHz; fmod = 1 kHz.
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50
s for FMMPX.
(3) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50
s for RDSMPX.
(4) THD for FMMPX and RDSMPX.
(5) Level for standard setting of level DAA, byte 6 = 84H.
handbook, full pagewidth
-
20
-
10
0
10
-
60
-
80
10
-
3
10
-
2
10
-
1
1
10
10
2
10
3
MHB487
-
40
-
50
-
70
-
30
Vi (mV)
VFMMPX,
VRDSMPX
(dB)
7
8
9
0
1
2
3
4
5
6
Vlevel
(V)
(2)
(3)
(5)
(1)
THD
(%)
(4)
V
i
= V
FMLIMIN
-
V
FMLIMDEC
.
2001 Apr 12
28
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12 I
2
C-BUS PROTOCOL
12.1
I
2
C-bus specification
Information about the I
2
C-bus can be found in the brochure
"The I
2
C-bus and how to use it" (order number
9398 393 40011).
The standard I
2
C-bus specification is expanded by the
following definitions.
IC addresses:
1st IC address C2: 1100001
2nd IC address C0: 1100000.
Structure of the I
2
C-bus logic: slave transceiver with auto
increment.
Subaddresses are not used.
12.1.1
T
EST MODE
Connecting pin f
ref
to V
DDA1
via a 100 k
resistor or
feeding 50
A into that pin switches the IC into the test
mode.
During test mode the digital-to-analog converters of the
level and antenna DAA functions can be sequenced by the
I
2
C-bus SCL line.
During test mode either the TEA6880H or TEF6890H
reference frequency, the PLL reference frequency divider
or the programmable divider output can be switched to
pin f
ref
.
12.1.2
D
ATA TRANSFER FOR THE
TEA6845
Data sequence: address, byte 1, byte 2, byte 3, byte 4,
byte 5, and byte 6. The data transfer has to be in this
order. The LSB = 0 indicates a WRITE operation to the
TEA6845.
Bit 7 of each byte is considered the MSB and has to be
transferred as the first bit of the byte.
The data becomes valid at the output of the internal
latches with the acknowledge of each byte. A STOP
condition after any byte can shorten transmission times.
When writing to the transceiver by using the STOP
condition before completion of the whole transfer:
The remaining bytes will contain the old information
If the transfer of a byte is not completed, this byte is lost
and the previous information is available.
In byte 5, 4 bits are reserved for test mode purposes.
Those can only be used when the test mode is activated
by the select pin f
ref.
12.1.3
I
2
C-bus p
ULL
-
UP RESISTORS
When the IC is used together with the TEA6880H or
TEF6890H and both SCL and SDA lines are connected via
the I
2
C-bus to the TEA6880H or TEF6890H, the pull-up
resistors of the tuner IC should be connected to the digital
supply voltage of the TEA6880H or TEF6890H. Otherwise
an I
2
C-bus pull-down can occur switching off the tuner IC
supply when the I
2
C-bus buffer interface of the TEA6880H
or TEF6890H is enabled for data transfer to the tuner IC.
12.1.4
F
REQUENCY SETTING
For new frequency setting, in both AM and FM mode, the
programmable divider is enabled by setting bit MUTE =1.
To select an FM frequency, two I
2
C-bus transmissions are
necessary:
First: bit MUTE = 1
Second: bit MUTE = 0.
2001 Apr 12
29
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2
I
2
C-bus protocol
12.2.1
D
ATA TRANSFER MODE AND
IC
ADDRESS
Table 1
Write mode
Table 2
Read mode
Notes to Tables 1 and 2
1. S = START condition.
2. A = acknowledge.
3. P = STOP condition.
Table 3
IC address byte
Notes
1. Defined by address pin f
ref
:
a) 1 = 1st IC address
b) 0 = 2nd IC address.
2. Read or write mode:
a) 0 = write operation to TEA6840H
b) 1 = read operation from TEA6840H.
12.2.2
W
RITE MODE
:
DATA BYTE
1
Table 4
Format of data byte 1
Table 5
Description of data byte 1 bits
S
(1)
address (write)
A
(2)
data byte(s)
A
(2)
P
(3)
S
(1)
address (read)
A
(2)
data byte 1
IC ADDRESS
MODE
1
1
0
0
0
0
0/1
(1)
R/W
(2)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
AF
PCA6
PCA5
PCA4
PCA3
PCA2
PCA1
PCA0
BIT
SYMBOL
DESCRIPTION
7
AF
Alternative frequency. If AF = 0, then normal operation. If AF = 1, then AF (RDS)
update mode.
6 to 0
PCA[6:0]
Setting of programmable counter of synthesizer PLL. Upper byte of PLL divider
word.
2001 Apr 12
30
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2.3
W
RITE MODE
:
DATA BYTE
2
Table 6
Format of data byte 2
Table 7
Description of data byte 2 bits
12.2.4
W
RITE MODE
:
DATA BYTE
3
Table 8
Format of data byte 3
Table 9
Description of data byte 3 bits
12.2.5
W
RITE MODE
:
DATA BYTE
4
Table 10 Format of data byte 4
Table 11 Description of data byte 4 bits
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
PCB7
PCB6
PCB5
PCB4
PCB3
PCB2
PCB1
PCB0
BIT
SYMBOL
DESCRIPTION
7 to 0
PCB[7:0]
Setting of programmable counter of synthesizer PLL. Lower byte of PLL divider
word.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
MUTE
DAA6
DAA5
DAA4
DAA3
DAA2
DAA1
DAA0
BIT
SYMBOL
DESCRIPTION
7
MUTE
FM audio mute. If MUTE = 0, then FM audio not muted. If MUTE = 1, then FM audio
muted; writing to programmable divider enabled.
6 to 0
DAA[6:0]
Setting of antenna digital auto alignment.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
IFMT
RFS2
RFS1
RFS0
IFPR
BND1
BND0
AMFM
BIT
SYMBOL
DESCRIPTION
7
IFMT
IF measuring time. If IFMT = 0, then IF measuring time is 20 ms. If IFMT = 1, then
IF measuring time is 2 ms.
6 to 4
RFS[2:0]
Reference frequency for synthesizer. These 3 bits determine the reference
frequency, see Table 12.
3
IFPR
IF counter prescaler ratio. If IFPR = 0, then IF prescaler ratio is 100. If IFPR = 1, then
IF prescaler ratio is 10.
2 and 1
BND[1:0]
Band switch. These 2 bits select in FM mode band and local or distant, see Table 13;
in AM mode band and AM stereo, see Table 14.
0
AMFM
AM or FM switch. If AMFM = 0, then FM mode. If AMFM = 1, then AM mode
2001 Apr 12
31
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Table 12 Reference frequency setting
Table 13 FM mode
Table 14 AM mode; note 1
Note
1. In AM mode dead zone high current charge pump switched off, current of low current charge pump set to 1 mA.
RFS2
RFS1
RFS0
f
ref
(kHz)
0
0
0
100
1
0
0
50
0
1
0
25
1
1
0
20
0
0
1
10
1
0
1
10
0
1
1
10
1
1
1
10
BND1
BND0
SELECTION
0
0
FM standard: dead zone high current charge pump active,
FM AGC defined by RF level and threshold level setting by
I
2
C-bus
0
1
FM local: dead zone high current charge pump active,
FM AGC source current set to maximum
1
0
FM East Europe: dead zone high current charge pump
switched off, current of low current charge pump set to 1 mA
1
1
FM weather band: N1 divider set to 1 and I and Q phase shift
network switched on, WX flag signal activated
BND1
BND0
SELECTION
0
0
AM mono; N2 divider set to 5 (SW)
0
1
AM stereo; N2 divider set to 5 (SW)
1
0
AM mono; N2 divider set to 10 (LW, MW)
1
1
AM stereo; N2 divider set to 10 (LW, MW)
2001 Apr 12
32
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2.6
W
RITE MODE
:
DATA BYTE
5
Table 15 Format of data byte 5
Table 16 Description of data byte 5 bits
Table 17 Setting of wide band AGC for AM
Table 18 Setting of wide band AGC for FM
Table 19 Setting function of pin f
ref
in test mode
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
KAGC
WBA1
WBA0
AMSM
TMS3
TMS2
TMS1
TMS0
BIT
SYMBOL
DESCRIPTION
7
KAGC
Keyed FM AGC. If KAGC = 0, then keyed FM AGC is off. If KAGC = 1, then keyed
FM AGC is on.
6 and 5
WBA[1:0]
Wide band AGC. These 2 bits set the start value of wide band AGC. For AM,
see Table 17 and for FM, see Table 18.
4
AMSM
AM soft mute. If AMSM = 0, then AM soft mute is off. If AMSM = 1, then AM soft mute
is on.
3
TMS3
In test mode charge pump 3-state. If TMS3 = 0, then 3-state off. If TMS3 = 1, then
3-state on.
2
TMS2
In test mode external clock for level and antenna DAA. If TMS2 = 0, then external
clock disabled. If TMS2 = 1, then external clock enabled.
1 and 0
TMS[1:0]
In test mode setting of pin f
ref
. These 2 bits define the function of pin f
ref
,
see Table 19.
WBA1
WBA0
AM MIXER 1 INPUT VOLTAGE (PEAK VALUE)
(mV)
0
0
150
0
1
275
1
0
400
1
1
525
WBA1
WBA0
FM RF MIXER 1 INPUT VOLTAGE (RMS VALUE)
(mV)
1
1
4
1
0
8
0
1
12
0
0
16
TMS1
TMS0
OUTPUT AT PIN f
ref
0
0
reference frequency of TEA6880H or TEF6890H
0
1
tuner oscillator frequency divided by division ratio of
programmable divider
1
0
PLL synthesizer reference frequency
1
1
not used (no output)
2001 Apr 12
33
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2.7
W
RITE MODE
:
DATA BYTE
6
Table 20 Format of data byte 6
Table 21 Description of data byte 6 bits
Table 22 Standard setting of data byte 6 bits
12.2.8
R
EAD MODE
:
DATA BYTE
1
Table 23 Format of 1st data byte
Table 24 Description of data byte 1 bits
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LST4
LST3
LST2
LST1
LST0
LSL2
LSL1
LSL0
BIT
SYMBOL
DESCRIPTION
7 to 3
LST[4:0]
Setting of level DAA starting point. These 5 bits determine the offset of the level
detector output voltage.
2 to 0
LSL[2:0]
Setting of level DAA slope. These 3 bits determine the steepness of the level detector
output voltage.
SETTING OF LEVEL DAA STARTING POINT
SETTING OF LEVEL DAA SLOPE
LST4
LST3
LST2
LST1
LST0
LSL2
LSL1
LSL0
1
0
0
0
0
1
0
0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
IFC7
IFC6
IFC5
IFC4
IFC3
IFC2
IFC1
IFC0
BIT
SYMBOL
DESCRIPTION
7 to 0
IFC[7:0]
IF counter result. These bits contain the last eight bits of the IF counter result.
2001 Apr 12
34
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
13 TEST AND APPLICATION INFORMATION
handbook, full pagewidth
MHB878
22
nF
22 nF
22
nF
FM
AGC
AM
RF AGC
90
AM-NOISE
DETECTOR
PEAK/
AVERAGE
N1
2
90
N2
5/10
FM
I/Q MIXER
RFGND
L6
L8
L5
ANTENNA
DAA
AM
32
33
31
30
29
28
TUNING SYSTEM
10.25 MHz
WX
AM
MIXER 1
22
WB FLAG
23
21
27
26
25
20
17 16
24
19
18
100 nF
22 nF
Coils:
L1: P826RC-5134N=S
L2: PSGAE-5078D=S
L3: P293BC-1977Z
L4: E543SNAS-02010
L5: 611SNS-1066Y
L6: 369INS-3076X
L7; 388BN-1211Z
L8: air coil
(1): 1 to 5 pF trimmer without DAA
(2): series NP0
3.3 nF
36
39
38
DGND
5 V
digital
fref
PLL
Vtune
37
35
34
1.2 k
2.2 k
10 k
22
100 nF
3.9 nF
22 k
22 nF
1 nF
470 pF
10 nF
150
pF
180
pF
1
F
1
F
120 nH
BB814
BAS16
Vt
(1)
1 nF
1 nF
15 pF
8.2 pF
100 nF
22
nF
10
nF
10
F
22
F
220 nF
3.3
H
180
H
270
H
150
H
15 pF
290 nH
290 nH
270
nH
22
2.2
M
BA595
BA595
BAQ806
5 V
analog
antenna
8.2
pF
3.3
H
6.8
H
22
47
560
22
2.2 M
10
k
100
pF
1.8 M
1.5 k
1 k
2.2 k
330
100
nF
BAV99
L7
BF861C
TEA6845AH
TEA6845H
SFE10.7
MS3
22
nF
15
14
13
10
L1
P
IFAMP1
Q
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Fig.7 Application diagram (continued in Fig.8).
2001 Apr 12
35
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
handbook, full pagewidth
MHB879
22
nF
22 nF
220
nF
22 nF
IF1GND
IFAMP2
SFE10.7
MS3
SFR450H
220
nF
SFE10.7
MS3
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
MUTE
5 V
analog
FM
MPX
RDS/
MPX
AM
AUDIO/IF
BLANK
PULSE
POWER
SUPPLY
IF
COUNT
LEVEL
DAA
AM
IF AGC
AM
LEVEL
FM
LIMITER/
LEVEL
I
2
C-BUS
VDD (I
2
C-bus)
DEMODULATOR
CRYSTAL
OSCILLATOR
20.5
MHz
AM/FM
LEVEL
AFC
SDA
AM IF2
FM IF
2 ms/
20 ms
SCL
AM
MIXER2
12
11
10
7
9
8
6
2
3
4
5
51
22 nF
22
nF
1
64
63
62
61
60
59
58
57
56
55
53
52
10
F
330
6.8 nF
L4
1.8
pF
100 nF
100
nF
47
F
47
F
3.3
H
47
F
IF2GND
54
4.7
k
10
k
10
k
L3
L2
120
k
I
2
C-bus
8.5 V
1
H
43
49
48
47
46
2.7
pF
50
22 nF
47
F
AF
HOLD
45
AF
SAMPLE
44
VCO
42
40
41
270 pF
(2)
BB156
4.7 k
22
8.5 V
22
P
Q
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Fig.8 Application diagram (continued from Fig.7).
2001 Apr 12
36
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
handbook, full pagewidth
MHB895
22
nF
22 nF
22
nF
SFE10.7
MS3
FM
AGC
AM
RF AGC
90
AM NOISE
DETECTOR
PEAK/
AVERAGE
N1
2
90
N2
5/10
IFAMP1
FM
I/Q MIXER
RFGND
4:6
ANTENNA
DAA
AM
32
33
31
30
29
28
TUNING SYSTEM
10.25 MHz
WX
AM
MIXER1
22
WB
FLAG
23
21
27
L6
26
25
20
17 16
24
19
18
Ce1
Ce2
22
nF
15
14
13
100 nF
22
nF
100
nF
3.3
nF
36
39
38
DGND
fref PLL
Vtune
37
35
relay 2
relay 1
relay 1
teledyne
34
1.2 k
2.2 k
10 k
22
100 nF
3.9
nF
22 k
22 nF
220 nF
330 pF
1 nF
470 pF
1 nF
180
pF
1
F
1
F
120
nH
BB814
BAS16
Vt
(1)
100 nF
100 nF
220
nF
3.3
H
L7
220 nH
3.3
H
680
H
100
H
47
F
22
F
8.2
pF
8.2
pF
1.5 to
5 pF
47 pF
560 pF
L8
470 nH
22
470
k
BA779-2
BA779-2
BAQ806
antenna
input
1 nF
6.8
H
22
47
22
10
470
k
270
270
100
pF
220
H
1 mH
1.2 M
1.5 k
100
nF
4.7
F
BAV99
BF861C
50
TEA6845AH
TEA6845H
L1
100 nF
100 nF
IF
output
100 nF
AM RF
input
330
IF
input
52
2
304
100 nF
FM RF input
47
R
S
Q
P
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
Fig.9 Test circuit (continued in Fig.10).
2001 Apr 12
37
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
handbook, full pagewidth
MHB896
22
nF
22 nF
220
nF
IF1GND
SFE10.7
MS3
SFR
450H
220
nF
SFE10.7
MS3
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
MUTE
5 V
analog
FM
MPX
RDS/
MPX
AM
AUDIO/IF
VCO
BLANK
PULSE
POWER
SUPPLY
IF
COUNT
LEVEL
DAA
AM
IF AGC
AM
LEVEL
IFAMP2
FM
LIMITER/
LEVEL
I
2
C-BUS
I
2
C-bus
interface
DEMODULATOR
CRYSTAL
OSCILLATOR
20.5
MHz
AM/FM
LEVEL
AM IF2
FM IF
2 ms/
20 ms
SCL
AM
MIXER2
12
11
10
7
9
8
6
2
3
4
5
51
100 nF
100
nF
100
nF
100
nF
1
64
63
62
61
60
59
58
57
56
55
53
52
22
F
330
6.8 nF
100
nF
1.8
pF
100 nF
100 nF
47
F
3.3
H
3.3
H
IF2GND
54
4.7
k
10
k
L3
L2
120
k
SDA
SCL
SDA
10
k
I
2
C-bus
8.5 V
42
43
49
48
47
46
40
2.7
pF
270 pF
(1)
41
50
22 nF
47
F
AF
HOLD
BB156
45
AF
SAMPLE
44
5 V
digital
4.7 k
22
L4
relay3
AM IF
output
22
100
nF
100
nF
68
k
68
k
DGND
AFC
100 nF
47
F
10
100 nF
47
F
10
100 nF
47
F
10
2 k
100 nF
FM IF1
output
330
100 nF
100 nF
FM IF2
output
330
100 nF
FM IF2
input
52
2
304
limiter
input
52
2
AM IF2
input
47
2 k
100 nF
304
47
F
R
S
Q
P
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
jumper
test pin
coaxial connector
L1: P7PSG-X398
L2: P7PSGAE-5078D = S
L3: 392BC-1977Z
L4: E543SNAS-02010
L5: 611SNS-1066Y
L6: 369INS-3076X
L7: MURATA LQN
L8: MURATA LQN
(1): series NP0
to TEA6880H
Fig.10 Test circuit (continued from Fig.9).
2001 Apr 12
38
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Table 25 DC operating points
SYMBOL
PIN
UNLOADED DC VOLTAGE (V)
AM MODE
FM MODE
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
C
AGC
1
3.6
4.3
4.8
4.1
4.6
5.1
FMLIMDEC
2
2.5
3
3.5
2.5
2.8
3.1
FMLIMIN
3
2.5
3
3.5
2.5
2.8
3.1
AMIF2DEC
4
2.4
2.7
3.2
floating
IFAMP2OUT
5
7.2
7.9
-
3.4
3.9
4.4
AMNBHOLD
6
4.3
4.6
5.1
8
8.4
-
AMIF2IN
7
2.4
2.7
3.2
floating
IF1GND
8
external 0
external 0
IFAMP2IN
9
3
4
5
2.7
3.1
3.5
C
offset
10
floating
3
3.5
4
IFAMP2DEC
11
3
4
5
2.7
3.1
3.5
IFAMP1OUT
12
7.2
7.9
-
3.6
4
4.4
IFAMP1IN
13
2.4
2.7
3
2.3
2.7
3.1
V
DDA6
14
external 8.5
external 8.5
IFAMP1DEC
15
2.4
2.7
3
2.3
2.7
3.1
MIX1OUT1
16
external 8.5
external 8.5
MIX1OUT2
17
external 8.5
external 8.5
V
DDA5
18
external 8.5
external 8.5
AMMIX1IN1
19
2.3
2.75
3.1
floating
AMMIX1IN2
20
2.3
2.75
3.1
floating
T1AMAGC
21
0
2.8
4.6
0 (no WX)
0.3 (no WX)
0.5 (no WX)
T2AMAGC
22
2.5
2.8
3.1
floating
IAMAGC
23
open-collector
open-collector
V
ref(FMMIX)
24
2.7
3.1
3.4
6.5
7.1
7.9
FMMIXIN1
25
1
1.3
1.6
2.3
2.8
3.3
RFGND
26
external 0
external 0
FMMIXIN2
27
1
1.3
1.6
2.3
2.8
3.3
IFMAGC
28
floating
1.5 (external
biasing)
-
4 (external
biasing)
T2FMAGC
29
7.5
8
8.3
3.9
4.6
5.3
T1FMAGC
30
floating
1
-
7
DAAOUT
31
-
0.2
0.3
0.2
-
8.25
DAATD
32
floating
0.2
-
1.5
DAAIN
33
0
-
8.5
0
-
8.5
V
tune
34
0
-
8.5
0
-
8.5
CPOUT
35
0
-
8.5
0
-
8.5
V
DDA4
36
external 8.5
external 8.5
2001 Apr 12
39
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
f
ref
37
3.2
3.4
3.7
3.2
3.4
3.7
V
DDD
38
external 5
external 5
DGND
39
external 0
external 0
VCOGND
40
external 0
external 0
OSCFDB
41
2.2
2.8
3.4
2.2
2.8
3.4
OSCTNK
42
5
6.1
7.2
5
6.1
7.2
V
DDA3
43
external 8.5
external 8.5
AFSAMPLE
44
0
0.2
0.5
0
0.2
0.5
AFHOLD
45
open-collector
open-collector
TRDSMUTE
46
1.9
2.2
2.5
0.7 (muted)
1.2 (muted)
1.7 (muted)
5.2 (not muted) 5.7 (not muted) 6.2 (not muted)
AMAFIF2
47
4
4.3
4.6
floating
RDSMPX
48
floating
2.6
3.1
3.3
FMMPX
49
floating
3
3.5
4
V
DDA2
50
external 5
external 5
V
DDA1
51
external 8.5
external 8.5
SDA
52
4.8
5
5.2
4.8
5
5.2
SCL
53
4.8
5
5.2
4.8
5
5.2
IF2GND
54
external 0
external 0
QDET1
55
floating
3.6
4.1
4.6
QDET2
56
floating
3.6
4.1
4.6
C
AFC
57
floating
1.2
3.4
4.1
V
level
58
0.05
-
7
0
-
7
XTAL1
59
1.7
2.1
2.5
1.7
2.1
2.5
XTALGND
60
external 0
external 0
XTAL2
61
1.7
2.1
2.5
1.7
2.1
2.5
I
ref
62
4
4.25
4.5
4
4.25
4.5
AMMIX2OUT1
63
external 8.5
external 8.5
AMMIX2OUT2
64
external 8.5
external 8.5
SYMBOL
PIN
UNLOADED DC VOLTAGE (V)
AM MODE
FM MODE
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
2001 Apr 12
40
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
14 PACKAGE OUTLINES
UNIT
A
1
A
2
A
3
b
p
c
E
(1)
e
H
E
L
L
p
Z
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
0.25
0.05
2.90
2.65
0.25
0.50
0.35
0.25
0.14
14.1
13.9
1
18.2
17.6
1.2
0.8
7
0
o
o
0.2
0.1
0.2
1.95
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
1.0
0.6
SOT319-2
MO-112
97-08-01
99-12-27
D
(1)
(1)
(1)
20.1
19.9
H
D
24.2
23.6
E
Z
1.2
0.8
D
e
E
A
1
A
L
p
detail X
L
(A )
3
B
19
y
c
E
H
A
2
D
Z D
A
Z E
e
v
M
A
1
64
52
51
33
32
20
X
pin 1 index
b
p
D
H
b
p
v
M
B
w
M
w
M
0
5
10 mm
scale
QFP64: plastic quad flat package; 64 leads (lead length 1.95 mm); body 14 x 20 x 2.8 mm
SOT319-2
A
max.
3.20
2001 Apr 12
41
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
UNIT
A1
A2
A3
bp
HD
HE
Lp
c
e
L
y
w
v
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
0.60
0.25
3.05
2.55
0.25
0.50
0.35
0.23
0.11
14.1
13.9
1.0
18.2
17.6
1.23
0.78
7
0
o
o
0.2
0.10
0.20
1.95
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
1.03
0.73
SOT319-5
MO-112CA1
99-06-03
D
(1)
E
(1)
ZD
(1)
ZE
(1)
20.1
19.9
24.2
23.6
1.23
0.78
e
E
A
detail X
L
B
19
y
c
D
A
e
v
M
A
1
64
52
51
33
32
20
X
pin 1 index
v
M
B
w
M
w
M
0
5
10 mm
scale
QFP64: plastic quad flat package; 64 leads (lead length 1.95 mm); body 14 x 20 x 2.8 mm
SOT319-5
A
max.
3.40
ZE
HE
Lp
(A3)
A2
A1
bp
bp
ZD
HD
2001 Apr 12
42
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
15 SOLDERING
15.1
Introduction to soldering surface mount
packages
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
"Data Handbook IC26; Integrated Circuit Packages"
(document order number 9398 652 90011).
There is no soldering method that is ideal for all surface
mount IC packages. Wave soldering can still be used for
certain surface mount ICs, but it is not suitable for fine pitch
SMDs. In these situations reflow soldering is
recommended.
15.2
Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
convection or convection/infrared heating in a conveyor
type oven. Throughput times (preheating, soldering and
cooling) vary between 100 and 200 seconds depending
on heating method.
Typical reflow peak temperatures range from
215 to 250
C. The top-surface temperature of the
packages should preferable be kept below 220
C for
thick/large packages, and below 235
C for small/thin
packages.
15.3
Wave soldering
Conventional single wave soldering is not recommended
for surface mount devices (SMDs) or printed-circuit boards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
If wave soldering is used the following conditions must be
observed for optimal results:
Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
For packages with leads on two sides and a pitch (e):
larger than or equal to 1.27 mm, the footprint
longitudinal axis is preferred to be parallel to the
transport direction of the printed-circuit board;
smaller than 1.27 mm, the footprint longitudinal axis
must be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
For packages with leads on four sides, the footprint must
be placed at a 45
angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Typical dwell time is 4 seconds at 250
C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
15.4
Manual soldering
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300
C.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320
C.
2001 Apr 12
43
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
15.5
Suitability of surface mount IC packages for wave and reflow soldering methods
Notes
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the
Drypack information in the
"Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods".
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, then the package must be placed at a 45
angle to the solder wave direction.
The package footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
16 DATA SHEET STATUS
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
PACKAGE
SOLDERING METHOD
WAVE
REFLOW
(1)
BGA, LFBGA, SQFP, TFBGA
not suitable
suitable
HBCC, HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, SMS
not suitable
(2)
suitable
PLCC
(3)
, SO, SOJ
suitable
suitable
LQFP, QFP, TQFP
not recommended
(3)(4)
suitable
SSOP, TSSOP, VSO
not recommended
(5)
suitable
DATA SHEET STATUS
(1)
PRODUCT
STATUS
(2)
DEFINITIONS
Objective data
Development
This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data
Qualification
This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Product data
Production
This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
2001 Apr 12
44
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
17 DEFINITIONS
Short-form specification
The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition
Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information
Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
18 DISCLAIMERS
Life support applications
These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes
Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
19 PURCHASE OF PHILIPS I
2
C COMPONENTS
Purchase of Philips I
2
C components conveys a license under the Philips' I
2
C patent to use the
components in the I
2
C system provided the system conforms to the I
2
C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
2001 Apr 12
45
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
NOTES
2001 Apr 12
46
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
NOTES
2001 Apr 12
47
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
NOTES
Philips Electronics N.V.
SCA
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
2001
72
Philips Semiconductors a worldwide company
For all other countries apply to: Philips Semiconductors,
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Bulgaria: Philips Bulgaria Ltd., Energoproject, 15th floor,
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Czech Republic: see Austria
Denmark: Sydhavnsgade 23, 1780 COPENHAGEN V,
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Finland: Sinikalliontie 3, FIN-02630 ESPOO,
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Philippines: Philips Semiconductors Philippines Inc.,
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Metro MANILA, Tel. +63 2 816 6380, Fax. +63 2 817 3474
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2092 JOHANNESBURG, P.O. Box 58088 Newville 2114,
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Printed in The Netherlands
753503/01/pp
48
Date of release:
2001 Apr 12
Document order number:
9397 750 07488
PDF 
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