基于Pspice的电路容差分析方法

The Circuit Error-tolerance Analysis Method Based on Pspice

讨论了电子电路中元器件产生随机误差的原因及其对电路性能的影响,提出了以EDA(电子设计自动化)软件Pspice为基础进行电路容差分析设计的技术方案.简单阐述了蒙特卡罗分析、最坏情况分析的方法,研究了电路参数偏差、温度效应和退化效应等3个方面的容差分析,并以实例分析证明了该方案的可行性.

This paper discusses the cause of random error in elements of circuit and its effect to circuit performance.It puts forward a technique scheme to analyze and design circuit error-tolerance based on EDA software Pspice,elaborates the MonteCarlo analysis,the worst-case analysis,studies the error-tolerance analysis from the following three aspects,that is,circuit parameter deviation,temperature effect and deteriorate effect,and it turns out the feasibility of the method with an example.