自补偿微信号放大及A/D转换编码电路的设计与应用

Design Self-compensating Circulation Amplifier and A/D Converter Coding Circuit

介绍一种直接对微弱信号进行放大与 A/D转换编码的电路原理 ,着重分析循环放大器误差自补偿及 A/D转换编码原理 ,并探讨了该电路的局限性及与 80 31单片机的接口应用。

This paper introduces a kind ofcircuitwhich is used in weak- signal amplifierand A/D converter coding,and describes the circuit structure. Error self- compensating of circulation amplifing and A/D con- verter coding principle are analyzed in detail,and application and limitation of the circuit are also dis- cussed.