STV8223B

MULTISTANDARD VIDEO AND SOUND IF SYSTEM

WITH AUDIO AND VIDEO SWITCHES

January 1997

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TUNER AGC STARTING POINT ADJUSTMENT

TUNER AGC OUTPUT

AGC CAPACITOR

NOT TO BE CONNECTED

IF INPUT

IF INPUT

GROUND

V

CC

EXTERNAL AUDIO INPUT

FM DEMODULATED AUDIO OUTPUT

AUDIO SWITCH OUTPUT

VOLUME CONTROL + MUTE

PIF PLL FILTER

AFC OUTPUT

CVBS OUTPUT

SWITCHING INPUT (INT/EXT)

IF LC

IF LC

AUDIO HIGH PASS FILTER

2nd IF SOUND INPUT

AUDIO AND 2nd IF DECOUPLING

INTERNAL VIDEO INPUT

VIDEO SWITCH OUTPUT

EXTERNAL VIDEO INPUT

PIN CONNECTIONS

SHRINK24

(Plastic Package)

ORDER CODE : STV8223B

.

VIDEO PLL DEMODULATION

.

SOUND PLL DEMODULATION

.

NEGATIVE MODULATION

.

AGC FOR NEGATIVE MODULATION

.

AUDIO SWITCH

.

DC VOLUME CONTROL

.

VIDEO SWITCH

DESCRIPTION

The STV8223B is a picture and sound IF processor

for multistandard application with very few external

components and adjustments.

It provides the audio and video switches for one

SCART plug application.

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