基于EDA技术的电路容差分析在电路设计中的应用

APPLICATION OF CIRCUIT TOLERANCE ANALYSIS IN CIRCUIT DESIGN BASED ON EDA TECHNOLOGY

采用EDA软件OrCAD/PSpice进行了电路容差分析的研究,分析了电路元器件参数变化对电路性能的影响,所得结果对于电子产品在批量生产前元器件容差的选取、产品成品率及可靠性预测具有很好的指导意义,通过仿真实验结果可以选取可靠性高、成本低的设计方案,以实现电路的优化设计,此外,以滤波器电路为例说明了在OrCAD/Pspice下进行电路容差分析的方法,并对其结果进行了讨论.

Tolerance analysis was researched according to the EDA software of OrCAD/ PSpice, then we can gain the influence on circuit performance because of component＇s tolerance deviation. The results plays a practical introductive significance on tolerance selection of circuit components, forecasts on ratio of qualified products and reliability of production. From these results, we can select the project of high reliability and low cost in order to optimize the design of circuit. The tolerance analysis and its results is illustrated through filter circuits based on OrCAD/Pspice .