说明：  该文档详细介绍了集成真有效值芯片AD637的使用方法，介绍了几种典型的应用电路，可以直接应用于实际电路，分析了影响AD637转换精度的几个方面，并提出了改善转换精度的有效方法。
(This document details the integrated chip AD637 True RMS to use, introduces several typical application circuit, can be directly applied to practical circuit, the accuracy of the impact of several aspects of AD637 conversion and proposed to improve the accuracy of the effective conversion Methods.)