STV8223A

MULTISTANDARD VIDEO AND SOUND IF SYSTEM

WITH AUDIO AND VIDEO SWITCHES

May 1995

PRELIMINARY DATA

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

AGC CAPACITOR

NOT TO BE CONNECTED

IF INPUT

IF INPUT

GROUND

V

EXTERNAL AUDIO INPUT

FM DEMODULATED AUDIO OUTPUT

AUDIO SWITCH OUTPUT

VOLUME CONTROL + MUTE

CC

PIF PLL FILTER

AFC OUTPUT

CVBS OUTPUT

SWITCHING INPUT (STANDARD + INT/EXT)

IF LC

IF LC

AUDIO HIGH PASS FILTER

2nd IF SOUND INPUT

2nd IF DECOUPLING + MUTE

INTERNAL VIDEO INPUT

VIDEO SWITCH OUTPUT

EXTERNAL VIDEO INPUT

PIN CONNECTIONS

SHRINK24

(Plastic Package)

ORDER CODE : STV8223A

.

VIDEO PLL DEMODULATION

.

SOUND PLL DEMODULATION

.

NEGATIVE MODULATION

.

AGC FOR BG STANDARDS

.

AUDIO SWITCH

.

DC VOLUME CONTROL

.

VIDEO SWITCH

This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice.

DESCRIPTION

The STV8223Ais a picture and sound IF processor

for negative modulation application with very few

external components and adjustments.

It provides the audio and video switches for one

SCART plug application.

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