首页|期刊导航|半导体学报（英文版）|Switched-capacitor multiply-by-two amplifier with reduced capacitor mismatches sensitivity and full swing sample signal common-mode voltage
半导体学报（英文版）2012，Vol.33Issue(11)：72-78,7.DOI:10.1088/1674-4926/33/11/115003
Switched-capacitor multiply-by-two amplifier with reduced capacitor mismatches sensitivity and full swing sample signal common-mode voltage
Switched-capacitor multiply-by-two amplifier with reduced capacitor mismatches sensitivity and full swing sample signal common-mode voltage
摘要
Abstract
A switched-capacitor amplifier with an accurate gain of two that is insensitive to component mismatch is proposed.This structure is based on associating two sets of two capacitors in cross series during the amplification phase.This circuit permits the common-mode voltage of the sample signal to reach full swing.Using the chargecomplement technique,the proposed amplifier can reduce the impact of parasitic capacitors on the gain accuracy effectively.Simulation results show that as sample signal common-mode voltage changes,the difference between the minimum and maximum gain error is less than 0.03％.When the capacitor mismatch is increased from 0 to 0.2％,the gain error is deteriorated by 0.00015 ％.In all simulations,the gain of amplifier is 69 dB.关键词
multiply-by-two amplifier/ mismatch-insensitive amplifier/ full swing/ switched-capacitor circuitsKey words
multiply-by-two amplifier/ mismatch-insensitive amplifier/ full swing/ switched-capacitor circuits引用本文复制引用
Xu Xinnan,Yao Suying,Xu Jiangtao,Nie Kaiming..Switched-capacitor multiply-by-two amplifier with reduced capacitor mismatches sensitivity and full swing sample signal common-mode voltage[J].半导体学报（英文版）,2012,33(11):72-78,7.基金项目
Project supported by the National Natural Science Foundation of China (Nos.61036004,61076024). （Nos.61036004,61076024）
