数字电位计在应力信号调理中的应用

摘要

DigitaI potentiometer is a variabIe resistor controI ed by a digitaI input,not onIy it have the basic characteristics of a variabIe resistance,but aIso has other properties,such as temperature,write protect,non-voIatiIe,etc.Therefore it is wideIy used in gain controI,power controI and so on.This paper introduces the feature of AD5235 and appIies it in stress signaI condi-tioning circuitry.It has achieved the digitization of stress signaI conditioning and improved the accuracy and efficiency.%数字电位计是一种由数字输入控制的可调电阻，它既有基本的可变电阻特性，又具有温度补偿、写保护、非易失性等特性，因此在增益控制、电源控制等方面得到广泛的应用。介绍了 AD 公司生产的数字电位计 AD5235的特点，将其应用于应力信号的调理电路中，实现了应力信号调理的数字化，提高了调理精度和效率。