微弱信号采样保持电路的分析  

Analysis of the small signal in the sample-and-hold circuit

作　　者：郭大江[1] 罗运先[1] 吴雄英[1] 

机构地区：[1]成都理工大学信息工程学院,成都610059

出　　处：《信息技术》2009年第6期163-165,共3页Information Technology

摘　　要：采样速度和保持精度,是采样保持电路设计制作者最为关注的两项指标。通过对数字地震仪模拟单元采样保持电路的理论分析,阐明了影响这两项指标的主要因素,并就如何提高采样速度和保持精度提出了作者的看法。Sampling rate and holding accuracy are two most concerned targets in designing the sample-and-hold circuit. Through theoretical analysis of the sample-and-hold circuit in the analog unit of the digital seismograph, this paper clarifies the main factors affecting these two indexs, and puts forward some views on how to improve the sampling speed and holding accuracy.

关 键 词：采样速度 保持电容 保持精度 充电 

分 类 号：TN702[电子电信—电路与系统]