一种PSK接口电路的容差设计研究

介绍了电路容差设计、分析和分配的定义,并提出了一种基于EDA仿真技术的电路容差设计方法.该容差设计方法综合运用了参数扫描分析、灵敏度分析和最坏情况分析等多种容差分析手段,可以对电路中影响电路容差性能的关键参数进行仿真分析和确认.利用Saber软件将该容差设计方法应用在PSK接口电路中,根据容差设计步骤,通过调整电路组成元器件的参数标称值,并通过为各元器件分配公差,提高了该电路输出特性的容差性能,为提高航天电子产品的可靠性水平提供了一种新的途径.

Research on tolerance design of the PSK interface circuit

The principle of circuit tolerance design,analysis and allocation are introduced,and a tolerance design method based on EDA simulation technology is presented.This method is a synthesis of several tolerance analysis including parameter sweep analysis,sensitivity analysis and worst case analysis,which could be used to simulate and confirm the key parameters which most effect the tolerance performance of the circuit.The method is applied to the PSK interface circuit using Saber.Follow the step,the nominal value of some electric components are adjusted,and the deviation of the value of the electric components are adjusted through tolerance allocation.The result demonstrates that the tolerance performance of the circuit has been improved.The research provides a new way to improve the reliability of aerospace electronic products.