STV8223B
MULTISTANDARD VIDEO AND SOUND IF SYSTEM
WITH AUDIO AND VIDEO SWITCHES
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VIDEO PLL DEMODULATION
SOUND PLL DEMODULATION
NEGATIVE MODULATION
AGC FOR NEGATIVE MODULATION
AUDIO SWITCH
DC VOLUME CONTROL
VIDEO SWITCH
SHRINK24
(Plastic Package)
DESCRIPTION
The STV8223B is a pictureand 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.
PIN CONNECTIONS
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
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
ORDER CODE :
STV8223B
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
8223B-01.EPS
January 1997
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