一种单片集成压力传感器信号调理电路的设计  

Design of Signal Conditioning Circuit for Monolithic Pressure Sensor

作　　者：李思颖[1,2] 张正元[2] 汤洁[1,2] 丁大胜[2,3] 张皓博[1,2] 

机构地区：[1]重庆邮电大学,重庆400065 [2]模拟集成电路重点实验室,重庆400060 [3]重庆大学,重庆400044

出　　处：《微电子学》2014年第1期78-80,100,共4页Microelectronics

基　　金：国家863计划基金资助项目(SQ2012AA041201)

摘　　要：针对单片集成压力传感器输出幅度较小、温度漂移会引起压力精度变化等难题，提出了一种新型的信号调理电路。该电路通过两个差分放大电路和四个D／A转换器来解决单片集成压力传感器的小输出和温度漂移问题。仿真结果表明，在5V电源电压下，在0℃～85℃温度范围内，信号调理电路的最大误差可以减少到满量程输出的1．8％。To solve the problem of variation in pressure accuracy due to small output amplitude and temperature drift, a novel signal conditioning circuit for monolithic integrated pressure sensor was presented. In this circuit, two operational amplifiers and four D/A converters were used to solve problems associated with small output and temperature effects on output of monolithic integrated pressure sensor. Simulation results showed that the maximum output error of the signal conditioning circuit was reduced to less than 1. 8% of the full-scale output voltage in a temperature range from 0 μ to 85 μ at 5 V supply voltage.

关 键 词：单片集成压力传感器 温度补偿 信号调理电路 

分 类 号：TN431.1[电子电信—微电子学与固体电子学]