A Novel High CMRR, Low Power and Low Voltage COS with QFG

• 作者: Ahmad Ghanaatian Alireza Ghorbani
• 来源期刊: 电路与系统(英文)
• 学科: 医学
• 关键词: CMRR QFG CURRENT Mode CURRENT Oprational AMPLIFIER COA COS
• 年，卷（期）: 2012,（3）
• 页码范围: 263-268
• 页数: 6页
• 分类号: R73

摘要

A novel high CMRR current output stage (COS) with QFG is presented in this paper. A novel common mode feedback (CMFB) is used to reject the common mode signal in order to achieve high CMRR. The common mode signal is omitted by the technique of adding the main signal and its opposite polarity one. 112 dB of CMRR is obtained in 0.35 μm CMOS technology with ±0.75 v supply voltage and only 182μw power dissipation which shows good improvement compared to the other work in the literature.