S1A0900X01

AM/FM TUNER + MPX S1A0900X01 INTRODUCTION The S1A0900X01 is a monolithic integrated circuit which consists of a 3V one-chip tuner and FM multiplex for AM/FM radios and head-phone radios. 24−SDIP−300 FUNCTIONS FM Stage: RF/IF/AF amp, Quadrature Detector, MIX, OSC, Tuning Indicator. AM Stage: RF/IF/AF amp, Detector, MIX, OSC, AGC, Tuning Indicator. MPX Stage: PLL amp, Decoder, Flip Flop, VCO Stop, Phase Detector, Stereo Indicator. 24−SOP−375 FEATURES 3 V one-chip tuner with built-in FM Multiplex No AM detect coil, IF coupling capacitor, FM IF by-pass capacitor needed Built-in tuning indicator function Built-in AM/FM selection switch Minimum number of external parts required Wide operating voltage range: VCC = 1.8V − 7V Low distortion (FM IF: 0.4%, AM IF: 1%, 0.2% (Typ) OPDERING INFORMATION Device S1A0900X01-A0B0 S1A0900X01-S0B0 Package 24−SDIP−300 24−SOP−375 Operature Temperature − 20°C − +75°C 1 S1A0900X01 AM/FM TUNER + MPX BLOCK DIAGRAM AM RF IN 24 FM RF OUT 23 RF VCC FM OSC AM OSC DET OUT MPX IN 22 21 20 19 18 PH1 17 PH2 16 OSC 15 L-CH OUT 14 R-CH OUT 13 AF BUFFER AM/F/E PHASE DETECTOR OSC STEREO DECODER LAMP TRIGGER AM/FM DET FM/F/E AGC AF IF AF IF FF LED DRIVER 1 FM RF IN 2 GND 3 FM MIX 4 AM MIX 5 AGC 6 VCC 7 AM IF 8 FM IF 9 GND 10 TUNING LED 11 ST LED 12 QUAD DET ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature LED Driver Voltage LED Driver...