TDA8222

VIDEO & SOUND IF SYSTEM

WITH VIDEO AND SOUND SWITCHES

October 1993

.

3 STAGE IF GAIN CONTROLLED AMPLIFIER

.

SYNCHRONOUS VIDEO DEMODULATOR

.

TOP SYNC AGC CIRCUIT

.

WHITE AND BLACK NOISE INVERTER

.

TUNER AGC OUTPUT FOR PNP TUNERS

(suitable also for MOSFET tuners)

.

ANALOG AFC

.

FM DETECTOR

.

AUDIO AND VIDEO SWITCHES COMPAT-

IBLE WITH SCART EUROPEAN NORM

.

DC VOLUME CONTROL

.

MUTE FUNCTION

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

24

23

22

21

11

12

TUNER AGC STARTING POINT ADJUSTMENT

TUNER AGC OUTPUT

VIDEO SWITCH

BALANCED IF INPUT

GROUND

AUDIO SWITCH OUTPUT

VOLUME CONTROL

BALANCED IF INPUT

FM REFERENCE TUNED CIRCUIT

DEMODULATED AUDIO OUTPUT

VIDEO SWITCH OUTPUT

V

CC

AGC TIME CONSTANT

IF LC

IF LC

SWITCHING INPUT

AFC LC

AFC OUTPUT

DEMODULATED CVBS OUTPUT

EXTERNAL AUDIO INPUT

2nd IF SOUND INPUT

2nd IF DECOUPLING INPUT + MUTE

INTERNAL VIDEO INPUT

EXTERNAL VIDEO INPUT

PIN CONNECTIONS

SHRINK DIP24

(Plastic Package)

ORDER CODE : TDA8222

DESCRIPTION

The TDA8222 is a video and sound IF circuit in

Shrink DIP24 package for color and black and white

TV sets. It is intended to operate with a negatively

modulated vision carrier and frequency modulated

sound carrier. It incorporates video and audio

switches compatible with SCART european norm.

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