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INTEGRATED CIRCUITS
DATA SHEET
TEA5570 RF/IF circuit for AM/FM radio
Product speciļ¬cation File under Integrated Circuits, IC01 September 1987
Philips Semiconductors
Product speciļ¬cation
RF/IF circuit for AM/FM radio
GENERAL DESCRIPTION
TEA5570
The TEA5570 is a monolithic integrated radio circuit for use in portable receivers and clock radios. The IC is also applicable to mains-fed AM and AM/FM receivers and car radio-receivers. Apart from the AM/FM switch function the IC incorporates for AM a double balanced mixer, 'one-pin' oscillator, i.f. amplifier with a.g.c. and detector, and a level detector for tuning indication. The FM circuitry comprises i.f. stages with a symmetrical limiter for a ratio detector.