摘要
在现代化智能控制系统中,对A/D转换的分辨率要求越来越高,而常用的ADC是8位转换器,已无法适用于分辨率要求较高的场合。本文介绍了一种新的提高A/D转换分辨率的方法,该方案是利用少量辅助电路与A/D芯片相配合,再经单片机软件处理来实现的。其转换速度较快,性价比较高,具有一定的推广实用价值。
In modern intelligent control system,the requirement of the A/D conversion resolution is higher and higher.The commonly used ADC is 8 bits converter,which can not be appropriate for the higher resolution occasion.This paper describes a new method to improve A/D conversion resolution.The proposed scheme is realized the coordination of a few auxiliary circuit and A/D chip and the SCM software process.This method has the advantages of high conversion speed and high cost performance.And it has certain popularization.
关键词
A
D转换
分辨率
差分放大
比较器
A/D conversion
resolution
differential amplification
comparator
