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Электронный компонент: TDA7419TR

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1/30
TDA7419
March 2005
1
FEATURES
4 STEREO INPUTS
SOFT STEP VOLUME
BASS, MIDDLE, TREBLE AND LOUDNESS
DIRECT MUTE AND SOFTMUTE
FOUR INDEPENDENT SPEAKER OUTPUTS
SUB WOOFER OUTPUT
SOFT STEP SPEAKER/SUBWOOFER
CONTROL
7 BANDS SPECTRUM ANALYZER
DIGITAL CONTROL:
I
2
C-BUS INTERFACE
2
DESCRIPTION
The TDA7419 is a high performance signal proces-
sor specifically designed for car radio applications.
The device includes a high performance audiopro-
cessor with fully integrated audio filters. The digital
control allows programming in a wide range of filter
characteristics. By the use of BICMOS-process and
linear signal processing low distortion and low noise
are obtained.
3 BAND CAR AUDIO PROCESSOR
Figure 2. Block Diagram
OUTLF
OUTRF
OUTLR
OUTRR
INPUT
MULTIPLEXER
InGain
AutoZero
I
2
C BUS
DIGITAL CONTROL
OUTSW/
OUTLR2
MUTE
Loudness
Middle
Treble
Bass
SoftMute
Softstep
Volume
Softstep
MonoFader
Softstep
MonoFader
Softstep
MonoFader
SUPPLY
VDD
CREF
GND
SDA
SCL
DIFFG
DIFFL
SE1R
SE1L
DIFFR
SE2L
SE2R
Spectrum
Analyzer
Softstep
MonoFader
Subwoofer
LPF
Mix
Mix
MIX/
OUTSW/
OUTRR2
HPF
HPF
Softstep
MonoFader
Softstep
MonoFader
AC2INL/
SE3L
AC2INR/
SE3R
ACOUTL/
AC2OUTL
ACOUTR/
AC2OUTR
ACINL/
FILOL
ACINR/
FILOR
VREFOUTF
SAOUT
SACLK
OUTLF
OUTRF
OUTLR
OUTRR
INPUT
MULTIPLEXER
InGain
AutoZero
I
2
C BUS
DIGITAL CONTROL
I
2
C BUS
DIGITAL CONTROL
OUTSW/
OUTLR2
MUTE
Loudness
Middle
Treble
Bass
SoftMute
Softstep
Volume
Softstep
MonoFader
Softstep
MonoFader
Softstep
MonoFader
SUPPLY
VDD
CREF
GND
SDA
SCL
DIFFG
DIFFL
SE1R
SE1L
DIFFR
SE2L
SE2R
Spectrum
Analyzer
Softstep
MonoFader
Subwoofer
LPF
Mix
Mix
MIX/
OUTSW/
OUTRR2
HPF
HPF
Softstep
MonoFader
Softstep
MonoFader
AC2INL/
SE3L
AC2INR/
SE3R
ACOUTL/
AC2OUTL
ACOUTR/
AC2OUTR
ACINL/
FILOL
ACINR/
FILOR
VREFOUTF
SAOUT
SACLK
Rev. 2
Figure 1. Package
Table 1. Order Codes
Part Number
Package
TDA7419
SO-28
TDA7419TR
SO-28 in Tape & Reel
SO-28
TDA7419
2/30
Table 2. Supply
Table 3. Thermal Data
Table 4. Absolute Maximum Ratings
ESD
All pins are protected against ESD according to the MIL883 standard.
Figure 3. Pin connection (Top view)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
s
Supply Voltage
7.5
8.5
10.5
V
I
s
Supply Current
V
s
= 8.5V
30
35
40
mA
SVRR
Ripple Rejection @ 1KHz
Audioprocessor(all Filters flat)
60
dB
Symbol
Parameter
Value
Unit
R
Th j-pins
Thermal Resistance Junction-pins max
85
C/W
Symbol
Parameter
Value
Unit
V
s
Operating Supply Voltage
10.5
V
T
amb
Operating Temperature Range
-40 to 85
C
T
stg
Storage Temperature Range
-55 to +150
C
ACOUTR/AC2OUTR
ACINR/FILOR
ACINL/FILOL
ACOUTL/AC2OUTL
SE3L/ACINL
SE2L
SE3R/ACINR
SE2R
SE1L
OUTLF
MUTE
SCL
VDD
SDA
SAIN
SAOUT
VREF
MIX/OUTSW/OUTRR2
1
3
2
4
5
6
7
8
9
26
25
24
23
22
20
21
19
27
10
28
SE1R
OUTLR
D04AU1569
DIFFL
DIFFG
DIFFR
OUTSW/OUTLR2
OUTRF
OUTRR
11
12
13
18
16
17
15
14
CREF
GND
3/30
TDA7419
Table 5. Pin Description
Pin
N#
Pin Name
Function
I/O
1
ACOUTR / AC2OUTR
AC coupling right output / DSO filter AC2OUT right channel
O
2
ACINR / FILOR
AC coupling right input / DSO filter FILO right channel
I/O
3
ACINL / FILOL
AC coupling left input / DSO filter FILO left channel
I/O
4
ACOUTL / AC2OUTL
AC coupling left output / DSO filter AC2OUT left channel
O
5
SE3L / ACINL
Single-ended input 3 left channel / AC coupling left input
I
6
SE3R / ACINR
Single-ended input 3 right channel / AC coupling right input
I
7
SE2L
Single-ended input 2 left channel
I
8
SE2R
Single-ended input 2 right channel
I
9
SE1L
Single-ended input 1 left channel
I
10
SE1R
Single-ended input 1 Right channel
I
11
DIFFL
Pseudo differential stereo input left
I
12
DIFFG
Pseudo differential stereo input common
I
13
DIFFR
Pseudo differential stereo input right
I
14
CREF
Reference capacitor
O
15
GND
Ground
S
16
OUTSW / OUTLR2
Subwoofer output / 2
nd
rear left output
O
17
OUTRF
Front right output
O
18
OUTRR
Rear right output
O
19
OUTLR
Rear left output
O
20
OUTLF
Front left output
O
21
MUTE
External mute pin
I
22
SCL
I2C bus clock
I
23
SDA
I2C bus data
I/O
24
VDD
Supply
S
25
SAIN
Spectrum analyzer clock input
I
26
SAOUT
Spectrum analyzer output
O
27
VREF
Vref output
O
28
MIX / OUTSW / OUTRR2 Mix input / Additional subwoofer output / 2
nd
rear right output
I/O
TDA7419
4/30
3
Audio Processor Features:
Input Multiplexer
QD / SE: quasi-differential stereo inputs, with selectable single-ended mode
SE1: stereo single-ended input
SE2: stereo single-ended input
SE3 / AC2IN: stereo single-ended input / DSO filter input
In-Gain 0 to 15dB, 1dB steps
internal offset-cancellation (AutoZero)
separate second source-selector
Mixing stage
mixable to front speaker-outputs
Loudness
2nd order frequency response
programmable center frequency (400Hz/800Hz/2400Hz)
15dB with 1dB steps
selectable low & high frequency boost
selectable flat-mode (constant attenuation)
Volume
+15dB to -79dB with 1dB step resolution
soft-step control with programmable blend times
Bass
2nd order frequency response
center frequency programmable in 4 steps (60Hz/80Hz/100Hz/200Hz)
Q programmable 1.0/1.25/1.5/2.0
DC gain programmable
-15 to 15dB range with 1dB resolution
Middle
2nd order frequency response
center frequency programmable in 4 steps (500Hz/1KHz/1.5KHz/2.5KHz)
Q programmable 0.5/0.75/1.0/1.25
DC gain programmable
-15 to 15dB range with 1dB resolution
Treble
2nd order frequency response
center frequency programmable in 4 steps (10KHz/12.5KHz/15KHz/17.5KHz)
-15 to 15dB range with 1dB resolution
Spectrum analyzer
seven bandpass filters
2nd order frequency response
programmable Q factor for different visual appearance
analog output
controlled by external serial clock
Speaker
4 independent soft step speaker controls, +15dB to -79dB with 1dB steps
Independent programmable mix input with 50% mixing ratio for front speakers
direct mute
Subwoofer
2nd order low pass filter with programmable cut off frequency
single-ended mono output
independent soft step level control, +15dB to -79dB with 1dB steps
Mute Functions
direct mute
digitally controlled SoftMute with 3 programmable mute-times(0.48ms/0.96ms/
123ms)
Effect
gain effect, or high pass effect with fixed external components
5/30
TDA7419
4
ELECTRICAL CHARACTERISTICS
Table 6. Electrical Characteristcs
V
S
= 8.5V; T
amb
= 25C; R
L
= 10k
; all gains = 0dB; f = 1kHz; unless otherwise specified
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SUPPLY
Vs
Supply Voltage
8
8.5
10
V
I
S
Supply Current
27
37
47
mA
INPUT SELECTOR
R
in
Input Resistance
All single ended inputs
70
100
130
k
V
CL
Clipping level
All Input
1.8
2
V
RMS
QD input
1.7
2
V
RMS
S
IN
Input Separation
80
100
dB
G
IN MIN
Min. Input Gain
-1
0
1
dB
G
IN MAX
Max. Input Gain
13
15
17
dB
G
STEP
Step Resolution
0.5
1
1.5
dB
V
DC
DC Steps
Adjacent Gain Steps
-5
1
5
mV
G
MIN
to G
MAX
-20
4
20
mV
V
offset
Remaining offset with AutoZero
0.5
mV
DIFFERENTIAL STEREO INPUTS
R
in
Input Resistance
Differential
70
100
130
K
CMRR
Common Mode Rejection Ratio
V
CM
=1 VRMS@ 1kHz
46
70
dB
V
CM
=1 VRMS@ 10kHz
46
60
dB
e
No
Output Noise @ Speaker Outputs
20Hz-20kHz,flat;all stages 0dB
12
V
MIXING CONTROL
M
LEVEL
Mixing Ratio
Main / Mix Source
-6/-6
dB
G
MAX
Max Gain
13
15
17
dB
A
MAX
Max Attenuation
-83
-79
-75
dB
A
STEP
Step Resolution
0.5
1
1.5
dB
LOUDNESS CONTROL
A
MAX
Max Attenuation
-17
-15
-13
dB
A
STEP
Step Resolution
0.5
1
1.5
dB
f
Peak
Peak Frequency
f
P1
360
400
440
Hz
f
P2
720
800
880
Hz
f
P3
2200
2400
2600
Hz
VOLUME CONTROL
G
MAX
Max Gain
13
15
17
dB
A
MAX
Max Attenuation
-83
-79
-75
dB
A
STEP
Step Resolution
0.5
1
1.5
dB
E
A
Attenuation Set Error
G = -20 to +20dB
-0.75
0
+0.75
dB
G = -79 to -20dB
-4
0
3
dB
E
T
Tracking Error
2
dB
V
DC
DC Steps
Adjacent Attenuation Steps
-3
0.1
3
mV
From 0dB to G
MIN
-5
0.5
5
mV