Linear IC and Module Circuits (cont'd) ECG740A 14-Pin DIP-W See Fig. L106 (14-Pin DIP-W See Alternate Fig. L132) AF PO, 2 W ECG742 16-Pin DIP-W See Fig. L136 TV Sound System, 2 W PO ECG743 16-Pin DIP See Fig. L111 FM Stereo Decoder - Phase-Locked Loop RF IF Amplifier for AM Radio INPUT MIXER MIXER OUTPUT LOCAL OSC RF OUTPUT ZENER REG INPUT RF INPUT MIXER DECOUP RF INPUT BIAS AGC INPUT AGC DECOUP IF OUTPUT RF/OSC GND IF INPUT {F/AGC GNO DE-EMPHASIS COMP SIG.IN +V y DC VOL CTRL TONE CONTROL COMP SiG osensaTOR BYPASS ee DET AUD OUT ; AMP OUT RG NETWORK PHASE SHIFT +INPUT Nc POWER AMP AUD IN L CHAN OUT 19 kHz LOOP L EMIT FILTER FOLLOWER OUT REMIT GND GND FOLLOWER OUT DEMODULATOR IN AUD OUT IF DECOUPLING R CHAN OUT 19 kHz OUT - INPUT NC vec IF IN STEREO LAMP IND ! STEREO SWITCH FILTER GND EV OUTPUT REGULATOR OUT R-F GND GROUND ECG744 14-Pin DIP See Fig. L104 | ECG745 8-Pin DIP See Fig. L98 | ECG746 8-Pin DIP See Fig. L98 1/2-Watt Audio Amplifier 3 PREAMP INPUT Ey PREAMP OUT FM TV Sound. IF Amplifier {F OUTPUT IF OUTPUT V+ GROUND GROUND iF IN+ IF INPUT AGC INPUT ECG747 8-Pin DIP See Fig. L98 Low-Level Video Detector ECG748A 14-Pin DIP See Fig. 104 TV Sound IF Amp/Limiter/Detector, Audio Preamp ECG749 14-Pin DIP See Fig. L104 TV Video IF Amplifier with Keyed AGC Wide-Band Amplifier. Replacement for MFC4010A IF AN IF AGC FILTER AFT BUFFER OUT GROUND BYPASS *vec RE AGC IF INPUT AUDIO OUTPUT QUAD NET INPUT BYPASS DELAY VOLT BYPA TEST POINT RE AGC OUTPUT TUNED CIRCUIT V YPASS GROUND +ec 1F INPUT QUAD BYPASS +V VIDUMARY gy FCG747 Beg auxiiany PREAMP OUTPUT KEYER PULSE VID/REF OC IN BYPASS PREAMP INPUT VID/REF DC IN AGC CAPACITOR GND ECG748A IF OUTPUT IF OUTPUT IF OUTPUT ECG753 4-Pin DIP-Q See Fig. L94 | ECG755 4-Pin DIP-O See Fig. L94 | ECG758* 4-Pin DIP-Q-See Fig. L94. Class A Audio Driver. Replacement for MFC4050 OUTPUT GROUND +VCc ECG 785 INPUT Voltage Regulator 9-20 Volts, 200 mA - | LOAD (max) Load Regulation 1 mA-50mA- 0.2% Line Regulation 0.03% Replacement for MFC4063, MFC4063A V REF V INPUT REF ECG758 Vv OUTPUT V INPUT * 3-Volt Differential Between VIN and VOUT Package Outlines - See Page 1-269 1-165