Delta-Sigma A/D转换器原理及其PSpice仿真  

Principle and PSpice Simulation of Delta-Sigma AD Converter

作　　者：陈拓[1] 刘铮[1] 

机构地区：[1]中国科学院西安网络中心,陕西西安710043

出　　处：《现代电子技术》2011年第16期119-122,共4页Modern Electronics Technique

摘　　要：为了深入理解Delta-Sigma A/D转换器的工作原理,合理地使用这类A/D转换器产品,或者用FPGA实现自己的Delta-Sigma A/D转换器设计。采用PSpice仿真软件进行模拟仿真的方法,对不同幅度的输入信号进行了一阶Delta-Sig-ma A/D转换器仿真实验,获得了与理论相一致的结果。通过对元件的参数扫描仿真为实际电路设计中元件的选择提供了实验依据。仿真实验过程完整,易于重复,与纯数学推导相比,仿真具有直观的特点。To deeply understand the working principle of Delta-Sigma AD converter,and make people to use this kind of AD converter products rationally,or realize Delta-Sigma AD converter design with FPGA,a simulation experiment of first-order Delta-Sigma AD converter for the input signal of different amplitude was performed with PSpice simulation software.A result consistent with the theory was obtained.An experimental basis is provided for the selection of components in actual circuit design through scanning and simulating the component parameters.The simulation experimental process is complete and easy to repeat.Compared with the pure mathematics deduce,the simulation has an intuitionistic characteristic.

关 键 词：DELTA-SIGMA A/D转换器 过采样 PSPICE仿真 

分 类 号：TN792-34[电子电信—电路与系统]