摘要
为满足便携心电监测设备中低功耗的应用要求,设计一种应用于便携式心电监测芯片的具有低功耗和高精度特性的带隙基准电路。通过采用工作于亚阈值区域的CMOS晶体管,电路取得了超低功耗。并采用高阶温度曲线补偿技术,提高了电路输出基准电压的精准度。电路采用标准CMOS 180 nm工艺设计,仿真结果表明,在-40~100℃的温度范围内输出基准电压为1.16 V,温度系数约为3.3 ppm/℃,在1.3 V电源电压下功耗为6.2μW。
A low-power consumption and high-precision bandgap reference circuit applicable for the ECG monitoring chip is designed to meet the low-power consumption application requirement of the portable ECG monitoring device. The ultra-low-power consumption is achieved for the circuit by adopting the CMOS transistor working in the sub-threshold region. The high-order temperature curve compensation technique is adopted to improve the accuracy of the reference voltage output by the circuit. The standard CMOS 180 nm process design is adopted for the circuit. The simulation results show that the output reference voltage is 1.16 V and the temperature coefficient is about 3.3 ppm/℃ in the temperature range of -40~100℃,and the power consumption of the circuit is 6.2 μW at the power supply voltage of 1.3 V.
作者
董晨
段权珍
范艺晖
丁月民
黄胜明
DONG Chen;DUAN Quanzhen;FAN Yihui;DING Yuemin;HUANG Shengming(Tianjin Key Laboratory of Intelligent Computing and Novel Software Technology,School of Computer Science and Engineering,Tianjin University of Technology,Tianjin 300384,China;School of Electric and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China)
出处
《现代电子技术》
北大核心
2019年第2期26-29,共4页
Modern Electronics Technique
基金
天津市自然科学基金(15JCZDJC30900)
天津市自然科学基金(15JCYBJC52400)~~
关键词
带隙基准电路
亚阈值区域
CMOS
高阶温度曲线补偿
超低功耗
心电监测
bandgap reference circuit
sub-threshold region
CMOS
high-order temperature curve compensation
ultra-low-power consumption
ECG monitoring