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9-7: Receivers and Transceivers
Single-IC FM Receiver
The Motorola MC3363 FM receiver IC chip contains all receiver circuits except for the audio power amplifier (a separate chip).
It is designed to operate at frequencies up to about 200 MHz
It is widely used in cordless telephones, paging receivers, and other portable applications.
This dual-conversion receiver contains two mixers, two local oscillators, a limiter, a quadrature detector, and squelch circuits.
The first local oscillator has a built-in varactor that allows it to be controlled by an external frequency synthesizer.