集成电路与嵌入式系统2024，Vol.24Issue(7)：65-72,8.
应用于睡眠定时器的纳瓦级功耗超低电压张弛振荡器
Nanowatt voltage relaxation oscillator applied to sleep timers
摘要
Abstract
In Internet of Things(IoT)systems,Resistance-Capacitance(RC)relaxation oscillator has been implemented to reduce power consumption.To address the issue that uncompensated traditional RC oscillators are susceptible to power supply and temperature influ-ences,the Forward Body Biasing(FBB)technique is employed to reduce the temperature drift of the low supply voltage digital buffer.Additionally,leverage Subthreshold Leakage Current(SLC)compensation and Subthreshold Leakage Suppression(SLS)in high-tem-perature subthreshold MOS transistors are used.Compared to uncompensated oscillators,the temperature stability is enhanced by 38 times.A relaxation oscillator based on 65 nm CMOS is designed.With a power supply voltage of 0.4 V at room temperature,the power consumption is 8.1 nW,operating at a frequency of 4.4 kHz.The energy efficiency is calculated at 1.84 nW/kHz.Within the range of-30℃ to 90℃,the temperature stability of the oscillator is measured at 75.1 ppm/℃.关键词
电容电阻张弛振荡器/泄露电流补偿/前向体偏置/物联网Key words
RC relaxation oscillator/leakage current compensation/forward body biasing/IoT分类
信息技术与安全科学引用本文复制引用
李振,王霖伟,杨建行,朱建华,杨伟涛,周荣,刘术彬..应用于睡眠定时器的纳瓦级功耗超低电压张弛振荡器[J].集成电路与嵌入式系统,2024,24(7):65-72,8.基金项目
中央高校基本科研业务费基金(XJSJ23046) （XJSJ23046）
西安电子科技大学创新基金(YJS2213). （YJS2213）
