DESCRIPTION

The YD9088 is a bipolar integrated circuit for use in mono portable and pocket radios. It is used when a minimum of peripheral components (of small dimensions and low costs) is important. The circuit contains a frequency-locked-loop (FLL) system with an intermediate Frequency (IF) of about 70kHz. Selectivity is achieved by active RC-filters. De-tuning related to the IF and too weak input signals is suppressed by the mute circuit.

FEATURES

*Equipped with all stages of a mono receiver form antenna to audio output

*Mute circuit

*Search tuning with a single varicap diode

*Mechanical tuning with integrating AFC

*AM application supported

*Power supply polarity protection

*Power supply voltage down to 1.8V