DESCRIPTION

The UTC TDA7088 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-lockedloop(FLL) system with an Intermediate Frequency (IF) of about 70kHz. Selectivity is achieved by active RC-filters. Detuning related to the IF and too weak input signals is suppressed by the mute circuit.

FEATURES

* Equipped with all stages of a mono receiver from 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

APPLICATIONS

* Mechanical tuning ; this is possible with or without integrating AFC circuit

* Electrical tuning; this is realized by one directional (band-up) search tuning facility, including RESET to the lower-band limit.