Overview

The LA7770 is a CATV-oriented wide-band FSK (frequency shift keying) receiver IC encapsulated in a DIP20S package that incorporates the functions required to demodulate scramble decoding data (i. e., the oscillator, mixer, limiting IF amplifier, squelcher, and data shaper functions).

Features

• High limiting sensitivity.

• Incorporating a common-collector oscillator enables LC, crystal, or SAW-R (surface acoustic wave resonator) operated oscillations, as required by application.

Functions

• Mixer.

• Limiting IF amplifier.

• Squelch meter drive.

• Oscillator.

• Quadrature detector.

• Data shaper.