Based on the VGA (variable gain amplifier) AD602 and logarithmic amplifier AD8310, We implement an AGC(automatic gain control) system with wide dynamic range through.

• 本文介绍了可变增益放大器AD602和对数放大器AD8310的工作原理,给出了利用AD602和AD8310级联实现基于对数放大的视频AGC系统设计的设计实现。