Switched-capacitor AGC system.

摘要

An automatic gain control (AGC) system provides a serial digital output. An analog-to-digital converter implemented by SC technology receives an analog input voltage signal (Vin) and converts it to a digital word through an iterative algorithmic process involving successive approximation against an input reference voltage (VR) from a reference voltage generator. The reference voltage generator comprises an SC full-wave rectifier receiving the analog input voltage and an active low-pass filter.