摘要
为了采用低功耗的无源无线射频识别(RFID)标签实现对变电站环境温度的实时监测,该文基于45 nm CMOS SOI技术提出了一种集成前置双斜坡模数转换器(DSADC)的CMOS温度传感器设计。该传感器有8个晶体管,最大限度地减少了芯片面积,其电源电压可以降低到0.6 V,以减少70%的功耗。所集成的模数转换器(ADC)针对面积进行了最小化的优化,测量分辨率为8位,采样率为30 kS/s。整个传感器前端(包括放大器和模拟多路选择器)在1 V电源下的功耗为34μW,测量温度范围为20℃~100℃,误差为+0.7/-1℃。
In order to realize the real-time monitoring of substation ambient temperature by using low-power passive radio frequency identification(RFID) tags,this paper implements an integrated front dual-slope analog-to-digital converter(DSADC) using 45 nm CMOS SOI technology,CMOS temperature sensor. The sensor has 8 transistors to minimize chip area and its supply voltage can be reduced to 0.6 V to reduce power consumption by 70%. The integrated analog-to-digital converter(ADC) is optimized for area minimization with a measurement resolution of 8 bits and a sampling rate of 30 k S/s. The entire sensor front end(including the amplifier and analog multiplexer)consumes 34 μW at1 V supply and measures from 20 ℃ to 100 ℃ with an error of +0.7/-1 ℃.
作者
石蓉
肖夏
王超
尹璐
涂彬
SHI Rong;XIAO Xia;WANG Chao;YIN Lu;TU Bin(State Grid Shaanxi Electric Power Company,Xi’an 710048,China)
出处
《自动化与仪表》
2019年第11期83-86,共4页
Automation & Instrumentation
