STV8223B

STV8223B MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES . . . . . . . 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 VCC EXTERNAL AUDIO INPUT FM DEMODULATED AUDIO OUTPUT AUDIO SWITCH OUTPUT VOLUME CONTROL + MUTE 8223B-01.EPS January 1997 1/10 STV8223B BLOCK DIAGRAM EXT CVBS AFC OUTPUT V CC 5 6 1 12 6dB 2 17 18 11 10 SWITCHED CVBS PIF PLL & AFC 19 IF INPUT 20 VID AMP WHITE NOISE & SPOT INVERT 3 SFE 5.5 SFE 6.5 CVBS OUT 22 TUNER AGC OUTPUT AGC Int/Ext LOGIC INTERFACE 4 23 TUNER AGC 24 AUDIO Vref MUTE 14 13 16 15 7 9 DC VOLUME SIF PLL LIMITER 8 STV8223B SWITCHED AUDIO EXT AUDIO AUDIO OUT ABSOLUTE MAXIMUM RATINGS Symbol VS Vx Tstg Toper Supply Voltage Tuner AGC Voltage Storage Temperatur...