LA7780M Overview
EN5268A Monolithic Linear IC LA7780M QPSK Downconverter for CATV Systems Overview The LA7780M is a downconverter for QPSK data demodulation for digital CATV transmission. This IC integrates a preamplifier, an AGC amplifier, a mixer, an oscillator, a post-amplifier, and other circuits in a single chip, and provides all the functions required from cable signal input through output to the A/D converter. Functions...
LA7780M Key Features
- Since a preamplifier is built in, the LA7780M has adequate sensitivity to handle the input signal from the cable directl
- Both internal and external AGC are supported as the AGC amplifier drive technique
- The output amplitude of the post amplifier used to drive the A/D converter is 2 Vp-p (typical)