µPC1197

The µPC1197 is a silicon monolithic integrated circuit for FM multiplex demodulator designed for stereo cassette tape recorder with radio receiver, car stereo and car radio operated at a low supply voltage.

The circuit consists of a voltage control oscillator ( VCO) for a demodulator and a phase locked loop (PLL), phase comparators, low pass filters (LPF), frequency dividers and a DC amplifier. lt also contains accessory circuits such as separation adjust or stereo-monaural switcher, VCO stopper and stereo-monaural switcher in depressed supply voltage.