电子器件Issue(1)：78-82,5.DOI:10.3969/j.issn.1005-9490.2015.01.018
一种全差分增益增强型运算放大器的设计
A Design of Fully Differential Gain-Boosted Operational Amplifier
史志峰 1王卫东1
作者信息
- 1. 桂林电子科技大学信息与通信学院，广西 桂林541004
- 折叠
摘要
Abstract
A fully differential op-amp used in a high speed ADC is designed. This operational amplifier is consisted of a main OTA in folded cascade,four single-ended auxiliary OTA and a modified switched capacitor common mode feedback circuit. Gain-boosted technique has been introduced. Based on SMIC 0.18 μm,1.8 V process,Simulation has been run in Spectre under Cadence platform. The result shows that DC-gain of the amplifier is as high as 115 dB,unity-gain bandwidth is 805 MHz and the power consumption is 10. 5 mW. And it can reach an accuracy of 0.01% within 8 ns. This amplifier is specially used in a high speed pipelined ADC.关键词
流水线ADC/高增益高速运算放大器/增益增强技术Key words
pipelined ADC/high gain high-speed operational amplifier/gain enhancement technique分类
信息技术与安全科学引用本文复制引用
史志峰,王卫东..一种全差分增益增强型运算放大器的设计[J].电子器件,2015,(1):78-82,5.
