STV8224B Datasheet, PDF (1/12 Pages) STMicroelectronics – MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES

STV8224B
MULTISTANDARD VIDEO AND SOUND IF SYSTEM
WITH AUDIO AND VIDEO SWITCHES
....... VIDEO PLL DEMODULATION
SOUND PLL DEMODULATION
POSITIVE AND NEGATIVE MODULATION
AGC FOR BG AND L STANDARDS
AUDIO SWITCH
DC VOLUME CONTROL
VIDEO SWITCH
DESCRIPTION
The STV8224B 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.
AM sound demodulation is performed with the
STV8225 add-on.
PIN CONNECTIONS
SHRINK24
(Plastic Package)
ORDER CODE : STV8224B
PIF PLL FILTER
1
AFC OUTPUT
2
CVBS OUTPUT
3
SWITCHING INPUT (STANDARD + INT/EXT)
4
IF LC
5
IF LC
6
AUDIO HIGH PASS FILTER
7
2nd IF SOUND INPUT
8
AUDIO AND 2nd IF DECOUPLING
9
INTERNAL VIDEO INPUT
10
VIDEO SWITCH OUTPUT
11
EXTERNAL VIDEO INPUT
12
24 TUNER AGC STARTING POINT ADJUSTMENT
23 TUNER AGC OUTPUT
22 AGC CAPACITOR
21 AGC CAPACITOR (L STANDARD)
20 IF INPUT
19 IF INPUT
18 GROUND
17
V _CC
16 EXTERNAL AUDIO INPUT
15 FM DEMODULATED AUDIO OUTPUT
14 AUDIO SWITCH OUTPUT
13 VOLUME CONTROL + MUTE
January 1997
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