KA22427 - Unisonic Technologies

KA22427 I-CHIP AM/FM RADIO-IC

UTC KA22427 is a one-chip AM/FM radio integrated circuit that is suitable for portable radio applications. It includes AM amplifier, local OSC, AM mixer, AM/FM amplifier, AM AGE, FM AGE circuit and also class b Audio Power Amplifier. FEATURES *Low external components count. *Wide operating voltage : 3 - 13 V. *Internal regulated supply for constant current .

Features

*Low external components count.
*Wide operating voltage : 3 - 13 V.
*Internal regulated supply for constant current operation.
*DC selection of AM/FM mode. BLOCK DIAGRAM AM IF OUT 4 AM/FM IN IF bypass HF GND 321 AGC bypass 16 AM/FM OUT 15 IF Detector IN 14 +Vcc 13 AM HF MIXER AM/FM IF AM/FM discriminato Regulator DIP-16 AM LO Audio amplifier 56 7 AM local HF bypass OSC AM HF IN 8 9 10 Audio Audio in Ripple detector Suppression out 11 12 Audio GND Audio power out ABSOLUTE MAXIMUM RATING(Ta=25°C) PARAMETER SYMBOL SUPPLY VOLTAGE VCC SUPPLY CURRENT ICC POWER DISSIP.