一种智能温度传感器的设计  

Design of a Smart Temperature Sensor

作　　者：林伟文 LIN Weiwen(College of Physics and Information Engineering,Fuzhou University,Fujian 350116,China)

机构地区：[1]福州大学物理与信息工程学院,福建350116

出　　处：《集成电路应用》2020年第4期54-56,共3页Application of IC

摘　　要：设计一款智能低功耗型温度传感器,用衬底PNP感知温度变化,并采用三阶Sigma-delta ADC作为读出电路,将温度值转化为数字量输出。采用线性函数对ADC输出量进行拟合。整体电路采用中芯国际0.18μm CMOS工艺进行设计,在1.8 V供电电压下,功耗为183.3μW。测量温度范围为0~100℃。ADC有效位数11.2位,采样频率为4 kHz,信噪比为90 dB。This study aims to design a smart low-power temperature sensor.A method using substrate PNP to sense temperature change is being used.Using a third-order sigma-delta ADC to convert the temperature into digital output.A linear function is used to fit the ADC output.The proposed temperature sensor was implemented in 0.18µm CMOS technology provided by SMIC(Semiconductor Manufactory International Corporation).Under 1.8 V supply voltage,the power consumption is 183.3µW.The measurable temperature range is 0~100℃.The ADC performs 11.2 bits ENOB.The sampling frequency is 4 kHz,and the signal-to-noise ratio is 90 dB.

关 键 词：温度传感器 低功耗 模拟数字转换器 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置]