开关电容滤波器的分析方法——运放为理想及非理想  

A New Method to Analyze Active SC Networks with Ideal and Nonideal Operational Amplifiers

作　　者：袁助国[1] 马胜前[1] 

机构地区：[1]西北师范大学物理系

出　　处：《电子学报》1989年第6期65-72,共8页Acta Electronica Sinica

摘　　要：本文提出了一种分析有源SC滤波网络的新方法。它不但能方便地分析含理想运放而且也能分析含单极点运放的SC滤波器。该方法列写方程简单规范,因此非常适宜SC网络的机辅分析。A new method to analyze active switched-capacitor(SC) filter networks is proposed. It is based on the capacitance matrix C, charge transfer matrix D defined in this paper and well-known charge conservation principle. The method can not only analyze the SC network containg nonideal (single-pole model) operational amplifiers (OAs), but also analyze the SC one with idel OAs. Using the method, closed formal expression of transfer functions for the first or second-order SC circuits with nonideal OAs can be obtained by manual operation-s. Besides, this approach is particularly suitable for computeraided analysis of active SC networks because it is very simple and normalize for us to write and find the equations.The exa-mle is given to illustrate the technique.

关 键 词：滤波器 开关电容 SC网络 运放 

分 类 号：TN713.91[电子电信—电路与系统]