LM331应用在A/D转换电路中的体会

Experience of Application of LM331 in the A/D Converted Circuit

从实际应用出发 ,介绍一种 V/ F转换器 LM3 3 1芯片及其在 A/ D转换电路中的应用 ,LM3 3 1芯片能够实现压/频转换 ,而且线性度好。在要求转换速度不太高的情况下 ,外围接简单电路可以代替由 AD5 74或 ADC0 80 9等芯片组成的 A/ D转换电路 ,硬件价格大大降低。为提高转换精确度 。

Convertor of LM331 and its application in the A/D convert circuit is introduced. Convertor of LM331 can turn voltage signal into frequency signal and have high linear function. In the not too high speed of converting circumstances, it can make up A/D converted circuit and replace AD574 or ADC0809 and so on, furthermore reduce hardware cost greatly. In order to improve converted precision, we need debug circuit parameter again and again, and make a experience in accordance with experimental condition.