SGS Thomson Microelectronics TDA4443 Datasheet

TDA4443

MULTISTANDARDVIDEO IF AMPLIFIER

.

SWITCHING OFF THE IF AMPLIFIER WHEN
OPERATINGIN VTR MODE

.

DEMODULATION OF NEGATIVE OR POSI­TIVE IF SIGNALS. THE OUTPUT REMAINS
ON THE SAMEPOLARITYIN EVERYCASE

.

IF AGC AUTOMATICALLY ADJUSTED TO
THEACTUALSTANDARD

.

TWOAGCPOSSIBILITIESFOR B/G MODE :

1. GATEDAGC

2. UNGATED AGC ON SYNC. LEVEL AND
CONTROLLED DISCHARGE DEPENDENT
ON THE AVERAGESIGNAL LEVELFORVTR
ANDPERITV APPLICATIONS
FOR STANDARD L : FAST AGC ON PEAK
WHITEBY CONTROLLEDDISCHARGE

.

POSITIVEOR NEGATIVEGATINGPULSE

.

EXTREMELYHIGH INPUTSENSITIVITY

.

LOW DIFFERENTIALDISTORTION

.

CONSTANTINPUT IMPEDANCE

.

VERYHIGHSUPPLYVOLTAGEREJECTION

.

FEWEXTERNALCOMPONENTS

.

LOW IMPEDANCE VIDEO OUTPUT

.

SMALLTOLERANCESOF THE FIXED VIDEO
SIGNALAMPLITUDE

.

ADJUSTABLE, DELAYED AGC FOR PNP
TUNERS

DESCRIPTION

TheTDA4443 is a Video IF amplifier with standard
switchfor multistandardcolourormonochromeTV
sets,and VTR’s.

DIP16

(Plastic Package)

ORDER CODE : TDA4443

PINCONNECTIONS

STANDARD SWITCHING

IF AGC TIMECONSTANT

DELAYED TUNER AGC OUTPUT

REFERENCE LC NETWORK

December 1992

IF INPUT

GROUND

TUNERAGC ADJUST

GATINGPULSE INPUT

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

IF INPUT
GROUND
NOT TO BE CONNECTED
SUPPLYVOLTAGE V
NOT TO BE CONNECTED
VIDEO SIGNAL OUTPUT
DISCHARGETIME CONSTANT

9

REFERENCELC NETWORK

CC

4443-01.EPS

1/7

TDA4443

BLOCK DIAGRAM

VIDEO

OUTPUT

IF INPUT
IF INPUT

V

S

TDA4443

16

1

3

15

STANDARD

WIDEBANDAMPLIFIER DEMODULATOR

CONTROL

AMPLIFIER

TUNER

CONTROL

SWITCH

2

TUNER

AGC

OUTPUT

TUNER
AGC
ADJUST

SUPPLY

UNIT

1345 6

V

CC

11 10

IW

VIDEO

GATING

AMPLIFIER

9

8

GATING

7

PULSE

4443-02.EPS

GENERALDESCRIPTION

This video IF processing circuit integratesthe fol­lowingfunctionalblocks :

.

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 supplyvoltage

rejection

.

Polarityswitch for the video outputsignal

.

AGC onpeakwhite level

.

GatedAGC

.

Dischargecontrol

.

Delayedtuner AGC

.

At VTR Reading mode the video output signal
isat ultrawhite level

2/7

ABSOLUTEMAXIMUM RATINGS

Symbol Parameter Value Unit

V

CC

V

0

V

ext

I

4

I

2

I

0

I

0

P

tot

T

j

T

AMB

T

stg

Supply Voltage RangePin 13 15 V
Open Loop Voltage Pin 5 max. V

CC

External Voltage Pin 4 12 V
Control Current for VTR Mode Pin 4 0.3 mA
Control Current for Standard Mode Pin 2 0.5 mA
Max. Video Output Current Pin 11 5 mA
Short Circuit Current (t ≤ 1sec) Pin 11

30 mA
Power Dissipation 1 W
Junction Temperature 125
Ambient Temperature Range 0 to +70
Storage Temperature Range -25 to +125

THERMALDATA

TDA4443

V

o

C

o

C

o

C

4443-01.TBL

Symbol Parameter Value Unit

R

th (j-a)

Junction-ambient Thermal Resistance 70

ELECTRICAL OPERATING CHARACTERISTICS

=25oC, VCC=12V,unless otherwise spacified.Test Circuit Page5.

T

AMB

Symbol Parameter Pin Min. Typ. Max. Unit

V

CC

I

CC

V

11

V

AA

V

O

V

O

∆(Vp−V

V

− V

p

blank

∆Vblack
∆Vwhite
∆Vvideo

Bvideo Video Bandwidth at -3dB 11 6 MHz

∆Vvideo

I

O

I

7

V

7

V

1

I Control Current for Status B (see status of mode switching)

Supply Voltage 13 10 12 15 V
Supply Current (VCC= 12V, V4= 3.5V,VIN=0)

13 55 75 mA

Pin 6, PIn7, PIn 2 open
Ultra White Level at Standard B/G

= 15V, V4= 3.5V

V

CC

Ultra Black Clamping Level at Standard B/G

11 4.8 5.1 5.6 V

11 1.70 1.85 2.10 V

SIGNAL 1
Picture to sync. output voltage of the video signal without load in

11 2.6 2.9 3.3 V

standard B/G (residual carrier 10%) SIGNAL 1
Picture to blanking level output voltage of thevideo signal without

11 1.80 2.1 2.40 V
load in standard L (blanking level at 28%of carrier amplitude)
SIGNAL 2 (residual carrier 5%)

)

blank

Output voltagechange of the picture to blanking level from
standard L tostandard B/G (mode BG : signal 1, mode L : signal 2)

11 10 %
Supply voltage influence on the ultra black level in standard B/G 11 0.5 %V

Supply voltage influence on the ultra white level in standard B/G 11 1 %V
Video Bandwidth

Video Signal Attenuation with V

at 4.43MHz

IN

11 1 1.5 dB

Video frequency response changes witin the AGC range 11 0.5 2.0 dB
DC Output Current(V11= 10V, VCC= 15V) 11 1.5 2 mA
Gating Pulse Current 7 0.30 1.0 mA
DC Voltage at Gating Input 7 1.3 1.6 V
Input Voltage Sensitivity VIN(with V

Standard B/G SIGNAL 1

OUT=VO

- 3dB)

1-

16

120

21040µ

=5V

V

2

o

C/W

PP

PP

µV

RMS

A

4443-02.TBL

4443-03.TBL

3/7

TDA4443

ELECTRICAL OPERATING CHARACTERISTICS (continued)

=25oC, VCC=12V, unlessotherwise spacified.TestCircuitPage 5.

T

AMB

Symbol Parameter Pin Min. Typ. Max. Unit

I Control Current Status C(see status of mode switching) - V

∆G

I

AGC

∆AGC

IF AGC Range 60 dB

IF

Available Tuner AGC Current (10dB above the AGCstarting point) 5 8 12 mA
Delay Between Tuner AGC and IF AGC (pin 6 not connected) 5 50 dB
IF residual carrier at the video o/p withing the

VIF

V2IF

AGC range 38.9MHz

77.8MHz

d Differential Distortion on Composite VIdeoSignal Amplitude

SIGNAL 3

aM Attenuationof sound tocolor carrierintermodulation signal (1.07MHz)

referred to the demodulated color carrier : PIcture Carrier = 0dB,
Color Carrier = -6dB, Sound Carrier = -24dB

∆Sync

Sync. Pulse Compression within the IF AGC Range 3 %

Sync

RI
CI

InputImpedance : Resistance

Capacitance

V Switch off Control Voltage for VTR Mode 4 9 10 V

I Switch off Current for VTR Mode 4 150 µ

= 6.3V 2 60 400 µ

2

11
11

20
50

11 5 %

11 50 dB

1-16
1-16

2.5
2

mV
mV

kΩ
pF

A

RMS
RMS

A

4443-04.TBL

SIGNAL1 (standard B/G)

DemodulatedSignal

1000mV

300mV

0mV

100%

IF Signal

100% 10%

4443-03.EPS / 4443-04.EPS

4/7

SIGNAL2 (standard L)

TDA4443

DemodulatedSignal

1000mV

300mV

0mV

SIGNAL3

100%

Demodulated Signal

900mV

500mV

IF Signal

5%

100%

4443-05.EPS/ 4443-06.EPS

4.43MHz

200mV

200mV

TEST CIRCUIT

Attenuateur

Modulator

Video

Generator

MODESWITCHING

300mV

0mV

47nF 22nF

22nF

22nF

4.43MHz

SUPPLY

VOLTAGE

22µF

10nF

V

CC

N.C.N.C.

VIDEO

OUTPUT

68nF

910111213141516

TDA4443

12345678

5k

200k

20kΩ

V4I

2.5kΩ

5

Ω

2.2µF

Ω

GATING

4443-07.EPS

33pF 0.5µH

4443-08.EPS

5/7

TDA4443

DEFINITION OF MODE SWITCHING

Status Pin 2 Pin 4 Function

A Not connected NoExternal Voltage Standard B/G mode, gatedcharge and discharge.
B 12V

HIgh Impedance

C 12V

Low Impedance

D No specifications ≥

The gating pulse at Pin 7 is internallyswitched off.

STATUSOFMODE SWITCHING, REFERRINGTO CONTROL VOLTAGE PIN2

Control Voltage

Pin 2

1.2to 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.

No External Voltage Standard B/G, ungated, charging up to sync. level, discharging

dependant from average signal (peri operation).

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.

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 forstandard B/G mode.

Connections of

Pin 2

Status Function

4443-05.TBL

4443-06.TBL

DA B CSTATUS

0.8

2.5

5.0 6.5

1.2

3.0

I2 (nA)

3

2

1

0

+12V

I2

TDA4443

V2

04812

V2

V2 (V)

4443-09.EPS

6/7

PACKAGE MECHANICAL DATA

16 PINS - PLASTICDIP

TDA4443

I

L

b1

E

Dimensions

a1

Z

b

16

18

Be

e3

D

9

F

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

PM-DIP16.EPS

DIP16.TBL

Information furnishedis believed to beaccurate andreliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use ofsuch information norfor anyinfringement ofpatents or other rights of third parties which may result
from itsuse. Nolicence is granted by implication orotherwise under any patent or patent rights of SGS-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 ascritical 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

I

C Patent. Rights touse these components in aI2C system, isgranted provided that thesystem conforms to

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.

2

C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips

2

the I

C Standard Specifications as definedby Philips.

SGS-THOMSON Microelectronics GROUP OFCOMPANIES

7/7