AN7223

ICs for FM/AM Tuner AN7223 AM Tuner, FM/AM IF Amplifier Circuit for Radio Cassette Recorder s Overview 1 18 17 16 14 13 12 11 10 6.3±0.25 0.51min. 3.8±0.25 (3.45) 2.54 0.3 – + 0.1 5 0.2 Unit : mm 0.5±0.1 1.2±0.25 14 VCC 1 7 AM/FM IF Amp. FM IF Amp. FM Quad. Det. Mute Det. 17 16 13 15 The AN7223 is an IC designed for high-class radio cassette recorder with multifunctioned FM/AM IF system. s Features Wide operating supply voltage range : VCC= 2.8V~12V Incorporating both FM and AM detectors Incorporating a level indicator output (FM/AM common use) 2 3 21.7±0.3 4 5 6 7 8 9 15 AM : High sensitivity,including RF amplifier Low power consumption Muting control AFC control Fewer external parts High stability on both AM and FM Low shock noise level from function switch operation SW band available (f= 30MHz) 3 ~ 15˚ 7.62±0.25 18-Lead DIP Package (DIP018-P-0300E) s Block Diagram 8 9 12 Level Meter Mute or Shock Noise Canceller AF Amp. 4 3 AM RF Amp. AM Mixer AM L Osc. AGC AM Det. 5 18 6 2 VCC (AM) 10 11 GND ICs for FM/AM Tuner s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 VCC (AM) AM RF Amp. Input AM Mixer Output AGC Output (2) AGC Output (1) AM IF Amp. Input IF By-pass IF By-pass Pin Name FM IF Amp. Input Pin No. 10 11 12 13 14 15 16 17 18 GND FM Detector Coil AF Output VCC Level Meter Output AFC Output Reference Voltage Local Oscillation Pin Name AM Detection Output AN7223 s Absolute Maximum Ratings (Ta=25˚C) Parameter Supply Voltage ...