基于△-∑智能温度传感芯片的设计  

Design of Intelligent Temperature Sensor Chip Based on Delta-Sigma

作　　者：严琴[1] 陈绳得 张俊杰[1] Yan Qin;Chen Shengde;Zhang Junjie(Department of Mechanical and Electrical Engineering,Xiamen University,Tan Kah Kee College,Fujian,Zhangzhou,363105,China)

机构地区：[1]厦门大学嘉庚学院机电系,福建漳州363105

出　　处：《仪器仪表用户》2018年第6期5-10,共6页Instrumentation

基　　金：福建省中青年教师教育科研项目(JAT160644)

摘　　要：本文研究设计高精度的Δ-Σ智能温度传感芯片,从温度传感元件选型,到二阶调制器的设计,利用Matlab simulink建立了二阶Δ-Σ调制器系统模型,对调制器电路进行仿真和参数优化。改进使用轨对轨折叠式共源共栅运算放大器作为调制器的积分器,增大了调制器的动态输入范围。设计实现了一款适用于14bit温度转换芯片的二阶△-Σ调制器,温度传感芯片在-50℃～150℃的温度范围内具有较好的线性度,温度分辨率达到0.1℃。Design of delta-sigma intelligent temperature sensor chip with high precision in this paper,the temperature sensing element selection,to design the two order modulator,a two order delta sigma modulator system model using Matlab Simulink simulation and parameter optimization of the modulator circuit.To improve the use of rail to rail folded cascode operational amplifier as modulator integrator,increases the dynamic range of input modulator;the design and implementation of a suitable tempemtoe 14bit conversion chip two order delta sigma modulator,temperature sensor chip-50 to 150 DEG G in good linearity and temperature the resolution can reach 0.1 DEG C.

关 键 词：温度传感 △-∑调制器 matlab建模 

分 类 号：TN401[电子电信—微电子学与固体电子学]