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 TUNERAGC OUTPUT
TUNERAGC ADJUST
GATINGPULSE INPUT
REFERENCE LC NETWORK
IF INPUT
GROUND
NOT TO BE CONNECTED
NOT TO BE CONNECTED
VIDEO SIGNAL OUTPUT
DISCHARGETIME CONSTANT
REFERENCELC NETWORK
SUPPLYVOLTAGEVCC
4443-01.EPS
PINCONNECTIONS
DIP16
(Plastic Package)
ORDER CODE : TDA4443
.SWITCHING OFF THE IF AMPLIFIER WHEN
OPERATINGIN 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
THEACTUALSTANDARD
.TWO AGC POSSIBILITIESFOR B/GMODE :
1. GATED AGC
2. UNGATED AGC ON SYNC. LEVEL AND
CONTROLLED DISCHARGE DEPENDENT
ON THE AVERAGE SIGNALLEVEL FORVTR
AND PERI TV APPLICATIONS
FOR STANDARD L : FAST AGC ON PEAK
WHITE BY CONTROLLEDDISCHARGE
.POSITIVEOR NEGATIVE GATING PULSE
.EXTREMELYHIGH INPUTSENSITIVITY
.LOW DIFFERENTIAL DISTORTION
.CONSTANTINPUT IMPEDANCE
.VERY HIGHSUPPLYVOLTAGE REJECTION
.FEWEXTERNALCOMPONENTS
.LOW IMPEDANCE VIDEO OUTPUT
.SMALL TOLERANCES OF THE FIXED VIDEO
SIGNALAMPLITUDE
.ADJUSTABLE, DELAYED AGC FOR PNP
TUNERS
DESCRIPTION
TheTDA4443 is a VideoIF amplifier withstandard
switch for multistandardcolour or monochromeTV
sets,and VTR’s.
1/7
16
1
WIDEBANDAMPLIFIER DEMODULATOR
VIDEO
IW
11 10
9
8
7
SUPPLY
UNIT GATING
AMPLIFIER
1345 6
VIDEO
OUTPUT
GATING
PULSE
IF INPUT
IF INPUT
TUNER
AGC
OUTPUT
TUNER
AGC
ADJUST VCC
2
STANDARD
SWITCH
3
15
VS
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-galvaniccoupling.
.Demodulatorcontrolled by the picture carrier
.Video output amplifier with high supply voltage
rejection
.Polarity switch for the video outputsignal
.AGC on peak white level
.GatedAGC
.Discharge control
.Delayedtuner AGC
.At VTR Reading mode the video output signal
is at ultra white level
TDA4443
2/7
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Supply Voltage RangePin 13 15 V
V0Open Loop Voltage Pin 5 max. VCC V
Vext External Voltage Pin 4 12 V
I4Control Current for VTR Mode Pin 4 0.3 mA
I2Control Current for Standard Mode Pin 2 0.5 mA
I0Max. Video Output Current Pin 11 5 mA
I0Short Circuit Current (t ≤1sec) Pin 11 30 mA
Ptot Power Dissipation 1 W
TjJunction Temperature 125 oC
TAMB Ambient Temperature Range 0 to +70 oC
Tstg Storage Temperature Range -25 to +125 oC
4443-01.TBL
THERMAL DATA
Symbol Parameter Value Unit
Rth (j-a) Junction-ambient Thermal Resistance 70 oC/W
4443-02.TBL
ELECTRICAL OPERATING CHARACTERISTICS
TAMB =25oC, VCC = 12V,unless otherwise spacified.Test Circuit Page5.
Symbol Parameter Pin Min. Typ. Max. Unit
VCC Supply Voltage 13 10 12 15 V
ICC Supply Current (VCC = 12V, V4= 3.5V, VIN =0)
Pin 6, PIn 7, PIn 2 open 13 55 75 mA
V11 Ultra White Level at Standard B/G
VCC = 15V, V4= 3.5V 11 4.8 5.1 5.6 V
VAA Ultra Black Clamping Level at Standard B/G
SIGNAL 1 11 1.70 1.85 2.10 V
VOPicture 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 VPP
VOPicture 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 VPP
∆(V
p−V
blank )
Vp−Vblank Output voltagechange 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 standardB/G 11 0.5 %V
∆Vwhite Supply voltage influence on the ultra white level in standardB/G 11 1 %V
∆Vvideo Video Bandwidth
Video Signal Attenuation with VIN 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
IODC Output Current (V11 = 10V, VCC = 15V) 11 1.5 2 mA
I7Gating Pulse Current 7 0.30 1.0 mA
V7DC Voltage at Gating Input 7 1.3 1.6 V
V1Input Voltage Sensitivity VIN (with VOUT =V
O- 3dB)
Standard B/G SIGNAL 1 1-
16 120 µVRMS
I Control Current for Status B (seestatus of mode switching)
V2=5V 21040µ
A
4443-03.TBL
TDA4443
3/7
ELECTRICAL OPERATING CHARACTERISTICS (continued)
TAMB =25o
C, VCC = 12V, unlessotherwisespacified.Test Circuit Page 5.
Symbol Parameter Pin Min. Typ. Max. Unit
I Control Current Status C (see status of mode switching) - V2= 6.3V 2 60 400 µA
∆GIF IF AGC Range 60 dB
IAGC Available Tuner AGC Current (10dB above the AGCstarting point) 5 8 12 mA
∆AGC Delay Between Tuner AGC and IF AGC (pin 6 not connected) 5 50 dB
VIF
V2IF
IF residual carrierat the video o/p withing the
AGC range 38.9MHz
77.8MHz 11
11 20
50 mVRMS
mVRMS
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 InputImpedance : Resistance
Capacitance 1-16
1-16 2.5
2kΩ
pF
V Switch off Control Voltage for VTR Mode 4 9 10 V
I Switch off Current for VTR Mode 4 150 µA
4443-04.TBL
4443-03.EPS / 4443-04.EPS
SIGNAL1 (standard B/G)
1000mV
300mV
0mV
100%
Demodulated Signal
100% 10%
IF Signal
TDA4443
4/7
4443-05.EPS/ 4443-06.EPS
SIGNAL2 (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
SIGNAL3
10nF
22µF
N.C.N.C.
68nF
VIDEO
OUTPUT
SUPPLY
VOLTAGE
12345678
910111213141516
33pF 0.5µH
5kΩ
2.5kΩ
200kΩ
20kΩGATING
22nF
47nF 22nF
22nF
Attenuateur
Modulator
Video
Generator
MODESWITCHING
2.2µF
V4I5
VCC
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 topeak 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
* Voltagemeasured on Pin 2.
4443-06.TBL
3
2
1
0
04812
V2 (V)
I2 (nA)
TDA4443 I2
+12V
V2
V2
DA B CSTATUS
0.8
1.2
2.5
3.0
5.0 6.5
4443-09.EPS
TDA4443
6/7
16
18
I
a1
L
Be
D
b
Z
e3
F
b1
E
9
PM-DIP16.EPS
PACKAGE MECHANICAL DATA
16 PINS- PLASTICDIP
Information furnishedis believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information norfor anyinfringement ofpatents or otherrights of third partieswhich mayresult
from itsuse. Nolicence isgranted by implication orotherwise under any patent or patent rights ofSGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics productsare 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 I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I2C Patent. Rights touse these components in a I2C system, is granted provided that the system conforms to
the I2C Standard Specificationsas definedby Philips.
SGS-THOMSON Microelectronics GROUP OFCOMPANIES
Australia - Brazil - China - France - Germany- Hong Kong - Italy -Japan - Korea- Malaysia - Malta - Morocco
The Netherlands - Singapore - Spain - Sweden - Switzerland -Taiwan - Thailand - United Kingdom - U.S.A.
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
