SA1021 FM RADIO RECEIVER FOR PORTABLE SYSTEM DESCRIPTION The SA1021 integrated radio receiver circuit is for portable radios, stereo as well as mono, where a minimum of periphery is important in terms of small dimensions and low cost.
It is fully compatible for applications using the low-voltage micro tuning system (MTS).
The IC has a frequency locked loop (FLL) system with an intermediate frequency of 76kHz.
The selectivity is obtained by active RC filters.
The only function to be tuned is the resonant frequency of the oscillator.
Interstation noise as well as noise from receiving weak signals is reduced by a correlation mute system.
Special precautions have been taken to meet local oscillat...

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