北京交通大学学报2011，Vol.35Issue(2)：72-75,4.
一种极低功耗运算放大器的设计与仿真
Design and simulation of an ultra-low power operation amplifier
摘要
Abstract
To meet the requirements of low-voltage and low-power, a sub-threshold operation amplifier (op-amp) with common-mode feedback is designed, using the ultra-low power feature of MOSFET which works in sub-threshold region. The sub-threshold op-amp is implemented under TSMC 0.18μm process with a single 1.2 V supply and simulated by Synopsys Hspice. The simulation results show that the sub-threshold op-amp whth a 0.5 pF output load has a DC gain of 70.97 dB, a unity gain bandwidth of 6.346 MHz, a phase margin of 85.76°, positive and negative slew rate of 3.58 V/μs and - 3.58 V/μs respectively, and its power consumption is only 4.80 μW.关键词
极低功耗/亚阈/运算放大器/直流增益/单位增益带宽/相位裕度/压摆率Key words
ultra-low power/ sub-threshold/ operation amplifier/ DC gain/ unity gain bandwidth/phase margin/ slew rate分类
信息技术与安全科学引用本文复制引用
骆丽,蔡晓伟,宫琦..一种极低功耗运算放大器的设计与仿真[J].北京交通大学学报,2011,35(2):72-75,4.基金项目
国家自然科学基金资助项目(60976024) （60976024）
