TDA4443
MULTISTANDARD VIDEO IF AMPLIFIER
December 1992
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IF INPUT
STANDARD SWITCHING
GROUND
IF AGC TIME CONSTANT
DELAYED TUNER AGC OUTPUT
TUNER AGC ADJUST
GATING PULSE INPUT
REFERENCE LC NETWORK
IF INPUT
GROUND
NOT TO BE CONNECTED
NOT TO BE CONNECTED
VIDEO SIGNAL OUTPUT
DISCHARGE TIME CONSTANT
REFERENCE LC NETWORK
SUPPLY VOLTAGE V
CC
4443-01.EPS
PIN CONNECTIONS
DIP16
(Plastic Package)
ORDER CODE : TDA4443
.
SWITCHING OFF THE IF AMPLIFIER WHEN
OPERATING IN VTR MODE
.
DEMODULATION OF NEGATIVE OR POSI-
TIVE IF SIGNALS. THE OUTPUT REMAINS
ON THE SAME POLARITY IN EVERY CASE
.
IF AGC AUTOMATICALLY ADJUSTED TO
THE ACTUAL STANDARD
.
TWO AGC POSSIBILITIES FOR B/G MODE :
1. GATED AGC
2. UNGATED AGC ON SYNC. LEVEL AND
CONTROLLED DISCHARGE DEPENDENT
ON THE AVERAGE SIGNAL LEVEL FOR VTR
AND PERI TV APPLICATIONS
FOR STANDARD L : FAST AGC ON PEAK
WHITE BY CONTROLLED DISCHARGE
.
POSITIVE OR NEGATIVE GATING PULSE
.
EXTREMELY HIGH INPUT SENSITIVITY
.
LOW DIFFERENTIAL DISTORTION
.
CONSTANT INPUT IMPEDANCE
.
VERY HIGH SUPPLY VOLTAGE REJECTION
.
FEW EXTERNAL COMPONENTS
.
LOW IMPEDANCE VIDEO OUTPUT
.
SMALL TOLERANCES OF THE FIXED VIDEO
SIGNAL AMPLITUDE
.
ADJUSTABLE, DELAYED AGC FOR PNP
TUNERS
DESCRIPTION
The TDA4443 is a Video IF amplifier with standard
switch for multistandard colour or monochrome TV
sets, and VTR's.
1/7
16
1
WIDE BAND AMPLIFIER
DEMODULATOR
VIDEO
IW
11
10
9
8
7
SUPPLY
UNIT
GATING
AMPLIFIER
13
4
5
6
VIDEO
OUTPUT
GATING
PULSE
IF INPUT
IF INPUT
TUNER
AGC
OUTPUT
TUNER
AGC
ADJUST
V
CC
2
STANDARD
SWITCH
3
15
V
S
CONTROL
AMPLIFIER
TUNER
CONTROL
TDA4443
4443-02.EPS
BLOCK DIAGRAM
GENERAL DESCRIPTION
This video IF processing circuit integrates the fol-
lowing functional blocks :
.
Three symmetrical, very stable, gain controlled
wideband amplifier stages - without feedback
by a quasi-galvanic coupling.
.
Demodulator controlled by the picture carrier
.
Video output amplifier with high supply voltage
rejection
.
Polarity switch for the video output signal
.
AGC on peak white level
.
Gated AGC
.
Discharge control
.
Delayed tuner AGC
.
At VTR Reading mode the video output signal
is at ultra white level
TDA4443
2/7
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage RangePin 13
15
V
V
0
Open Loop Voltage
Pin 5
max. V
CC
V
V
ext
External Voltage
Pin 4
12
V
I
4
Control Current for VTR Mode
Pin 4
0.3
mA
I
2
Control Current for Standard Mode
Pin 2
0.5
mA
I
0
Max. Video Output Current
Pin 11
5
mA
I
0
Short Circuit Current (t
1sec)
Pin 11
30
mA
P
tot
Power Dissipation
1
W
T
j
Junction Temperature
125
o
C
T
AMB
Ambient Temperature Range
0 to +70
o
C
T
stg
Storage Temperature Range
-25 to +125
o
C
4443-01.TBL
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th (j-a)
Junction-ambient Thermal Resistance
70
o
C/W
4443-02.TBL
ELECTRICAL OPERATING CHARACTERISTICS
T
AMB
= 25
o
C, V
CC
= 12V, unless otherwise spacified. Test Circuit Page 5.
Symbol
Parameter
Pin
Min.
Typ. Max.
Unit
V
CC
Supply Voltage
13
10
12
15
V
I
CC
Supply Current (V
CC
= 12V, V
4
= 3.5V, V
IN
= 0)
Pin 6, PIn 7, PIn 2 open
13
55
75
mA
V
11
Ultra White Level at Standard B/G
V
CC
= 15V, V
4
= 3.5V
11
4.8
5.1
5.6
V
V
AA
Ultra Black Clamping Level at Standard B/G
SIGNAL 1
11
1.70
1.85
2.10
V
V
O
Picture to sync. output voltage of the video signal without load in
standard B/G (residual carrier 10%) SIGNAL 1
11
2.6
2.9
3.3
V
PP
V
O
Picture to blanking level output voltage of the video signal without
load in standard L (blanking level at 28%of carrier amplitude)
SIGNAL 2 (residual carrier 5%)
11
1.80
2.1
2.40
V
PP
(
V
p
-
V
blank
)
V
p
-
V
blank
Output voltage change of the picture to blanking level from
standard L to standard B/G (mode BG : signal 1, mode L : signal 2)
11
10
%
Vblack
Supply voltage influence on the ultra black level in standard B/G
11
0.5
%V
Vwhite
Supply voltage influence on the ultra white level in standard B/G
11
1
%V
Vvideo
Video Bandwidth
Video Signal Attenuation with V
IN
at 4.43MHz
11
1
1.5
dB
Bvideo
Video Bandwidth at -3dB
11
6
MHz
Vvideo
Video frequency response changes witin the AGC range
11
0.5
2.0
dB
I
O
DC Output Current (V
11
= 10V, V
CC
= 15V)
11
1.5
2
mA
I
7
Gating Pulse Current
7
0.30
1.0
mA
V
7
DC Voltage at Gating Input
7
1.3
1.6
V
V
1
Input Voltage Sensitivity V
IN
(with V
OUT
= V
O
- 3dB)
Standard B/G SIGNAL 1
1-
16
120
V
RMS
I
Control Current for Status B (see status of mode switching)
V
2
= 5V
2
10
40
A
4443-03.TBL
TDA4443
3/7
ELECTRICAL OPERATING CHARACTERISTICS (continued)
T
AMB
= 25
o
C, V
CC
= 12V, unless otherwise spacified. Test Circuit Page 5.
Symbol
Parameter
Pin
Min.
Typ. Max.
Unit
I
Control Current Status C (see status of mode switching) - V
2
= 6.3V
2
60
400
A
G
IF
IF AGC Range
60
dB
I
AGC
Available Tuner AGC Current (10dB above the AGC starting point)
5
8
12
mA
AGC
Delay Between Tuner AGC and IF AGC (pin 6 not connected)
5
50
dB
VIF
V2IF
IF residual carrier at the video o/p withing the
AGC range 38.9MHz
77.8MHz
11
11
20
50
mV
RMS
mV
RMS
d
Differential Distortion on Composite VIdeo Signal Amplitude
SIGNAL 3
11
5
%
aM
Attenuation of sound to color carrier intermodulation signal (1.07MHz)
referred to the demodulated color carrier : PIcture Carrier = 0dB,
Color Carrier = -6dB, Sound Carrier = -24dB
11
50
dB
Sync
Sync
Sync. Pulse Compression within the IF AGC Range
3
%
RI
CI
Input Impedance : Resistance
Capacitance
1-16
1-16
2.5
2
k
pF
V
Switch off Control Voltage for VTR Mode
4
9
10
V
I
Switch off Current for VTR Mode
4
150
A
4443-04.TBL
4443-03.EPS
/
4443-04.EPS
SIGNAL 1 (standard B/G)
1000mV
300mV
0mV
100%
Demodulated Signal
100%
10%
IF Signal
TDA4443
4/7
4443-05.EPS
/
4443-06.EPS
SIGNAL 2 (standard L)
1000mV
300mV
0mV
100%
Demodulated Signal
100%
5%
IF Signal
900mV
500mV
300mV
0mV
200mV
4.43MHz
4.43MHz
200mV
Demodulated Signal
4443-07.EPS
SIGNAL 3
10nF
22
F
N.C.
N.C.
68nF
VIDEO
OUTPUT
SUPPLY
VOLTAGE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
33pF
0.5
H
5k
2.5k
200k
20k
GATING
22nF
47nF
22nF
22nF
Attenuateur
Modulator
Video
Generator
MODE SWITCHING
2.2
F
V
4
I
5
V
CC
TDA4443
4443-08.EPS
TEST CIRCUIT
TDA4443
5/7
DEFINITION OF MODE SWITCHING
Status
Pin 2
Pin 4
Function
A
Not connected
No External Voltage
Standard B/G mode, gated charge and discharge.
B
12V
HIgh Impedance
No External Voltage
Standard B/G, ungated, charging up to sync. level, discharging
dependant from average signal (peri operation).
C
12V
Low Impedance
No External Voltage
At standard L ungated, charging up to peak white level,
discharge dependant from average signal level, inverted polarity
of the video output.
D
No specifications
7.5V
In VTR reading mode the IF amplifier is blocked, turned gain
controlled down : the video output signal is fixed at constant ultra
white level for standard B/G mode.
The gating pulse at Pin 7 is internally switched off.
4443-05.TBL
STATUS OF MODE SWITCHING, REFERRING TO CONTROL VOLTAGE PIN 2
Control Voltage
Pin 2
Connections of
Pin 2
Status
Function
1.2 to 2.5V*
Open
A
Standard B/G gated sync. operation
3.0 to 5.0V
High Impedance
B
Standard B/G, no sync., operation
> 6.5V
Low Impedance
C
Standard L
0.0 to 0.8V
Ground
D
Standard L
* Voltage measured on Pin 2.
4443-06.TBL
3
2
1
0
0
4
8
12
V2 (V)
I2 (nA)
TDA4443
I2
+12V
V2
V2
D
A
B
C
STATUS
0.8
1.2
2.5
3.0
5.0 6.5
4443-09.EPS
TDA4443
6/7
16
1
8
I
a1
L
B
e
D
b
Z
e3
F
b1
E
9
PM-DIP16.EPS
PACKAGE MECHANICAL DATA
16 PINS - PLASTIC DIP
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result
from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without not ice. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.
1994 SGS-THOMSON Microelectronics - All Rights Reserved
Purchase of I
2
C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I
2
C Patent. Rights to use these components in a I
2
C system, is granted provided that the system conforms to
the I
2
C Standard Specifications as defined by Philips.
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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Dimensions
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
a1
0.51
0.020
B
0.77
1.65
0.030
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
17.78
0.700
F
7.1
0.280
i
5.1
0.201
L
3.3
0.130
Z
1.27
0.050
DIP16.TBL
TDA4443
7/7
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