半导体学报2008，Vol.29Issue(9)：1698-1702,5.
用于低功耗三级放大器的嵌套式密勒有源电容频率补偿技术
Nested Miller Active-Capacitor Frequency Compensation for Low-Power Three-Stage Amplifiers
马海峰 1周锋 1牛祺 1吕昌辉1
作者信息
- 1. 复旦大学专用集成电路与系统国家重点实验室,上海,201203
- 折叠
摘要
Abstract
A new frequency compensation technique for low-power, area-efficient multistage amplifiers is introduced. Using nested active capacitors ,our scheme achieves better bandwidth-to-power and slew-rate-to-power performances than previous works. Implemented in standard 0. 35μm CMOS technology, our three-stage amplifier achieves 105dB DC gain, 3.3M GBW,68° phase margin, and 2.56V/μs average slew rate under a 150pF capacitive load. All of these are realized with only 40μW power consumption under a 2V power supply, with very small compensation capacitors.关键词
多级放大器/频率补偿/低功耗Key words
multistage amplifier/frequency compensations low power分类
信息技术与安全科学引用本文复制引用
马海峰,周锋,牛祺,吕昌辉..用于低功耗三级放大器的嵌套式密勒有源电容频率补偿技术[J].半导体学报,2008,29(9):1698-1702,5.
