STV8224A Datasheet | STMicroelectronics

MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES - . . PRELIMINARY DATA 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 STV8224Ais a picture and sound IF processor for multistandard application with very few external ponents 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 : STV8224A 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 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 TUNER AGC STARTING POINT ADJUSTMENT TUNER AGC OUTPUT AGC CAPACITOR AGC CAPACITOR (L STANDARD) IF INPUT IF INPUT GROUND V CC EXTERNAL AUDIO INPUT FM DEMODULATED AUDIO OUTPUT AUDIO SWITCH OUTPUT VOLUME CONTROL + MUTE 8224A-01.EPS May 1995 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice. 1/12 BLOCK DIAGRAM EXT CVBS AFC OUTPUT VCC 5 6 1 12 6d B 18 11 10 SWITCHED CVBS PIF PLL & AFC 19 IF INPUT 20 21 AGC 22 TUNER AGC OUTPUT 23 TUNER AGC 24 14 13 DC VOLUME VID AMP WHITE NOISE & SPOT INVERT 3 SFE 5.5 SFE 6.5 CVBS OUT Int/Ext LOGIC INTERFACE BG/L SIF PLL LIMITER & MUTE 8 9 4 EXT AUDIO AUDIO...