AN7259S

ICs for FM/AM Tuner AN7259S FM-IF Amplifier Circuit for Car Radio s Overview The AN7259S is an FM–IF/DET IC for car radio/car stereo and has each function necessary for electronictuner. 0.4 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1.5±0.2 Unit : mm and separation control, etc. IF counter output and search output in channel selection signal as electronic tuning and with IF counter output ON/OFF circuit (SSC) Adjustment of search band width and search output center frequency Soft muting adjusting function 0.1±0.1 1.27 s Features Quadrature detection system and fewer external parts Good linearity of control voltage output used for AGC 0.4±0.25 0.3 5.4±0.3 7.7±0.3 20-Lead SOP Package (SOP020-P-0300A) s Block Diagram 20 19 18 17 16 15 14 13 12 11 FM IF Amp. Counter SSC FM Det. VCONT. Search Mute Amp. 1 2 3 4 5 6 7 8 GND 9 10 VCC 0.15 0.65 12.6±0.3 AN7259S s Absolute Maximum Ratings (Ta=25˚C) Parameter Supply Voltage Supply Current Power Dissipation (Ta = 75˚C) Operating Ambient Temperature Storage Temperature Symbol VCC ICC PD Topr Tstg Rating 9.6 23 230 –30 ~ + 75 –55 ~ + 125 ICs for FM/AM Tuner Unit V mA mW ˚C ˚C s Recommended Operating Range (Ta=25˚C) Parameter Operating Supply Voltage Range Symbol VCC Range 7.3V ~ 9.6V AN7259S H2 s Electrical Characteristics (VCC = 8V, FM 1kHz 30%Modulation, Ta= 25˚C) Parameter Limiting Sensitivity Detection Output Level AFC Offset Voltage Signal Voltage (1) Signal Voltage (2) Signal Volta...