A Wide-Band Feedback Amplifier based on A New Operational Current Amplifier in 130nm CMOS

2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC) Pub Date : 2019-06-12 DOI:10.1109/EDSSC.2019.8754486

Bai Chunfeng, Zhao Heming, Qiao Donghai

引用次数: 3

Abstract

Two main topologies of feedback amplifiers are analyzed in detail in this paper. One is based on operational transconductance amplifier, but is limited in bandwidth. The other one is based on operational current amplifier, and can achieve wide bandwidth. In order to implement a wide-band feedback amplifier in a 130 nm CMOS with 1.2 V supply, a novel operational current amplifier with reasonable CMRR and wide output swing is proposed. This feedback amplifier draws 2.1 mA from 1.2 V supply while obtain 160 MHz bandwidth and 20.4 dBm IIP3 at 14-dB gain setting. The CMRR is 79 dB within 100 kHz, and is 20 dB within 2.5 GHz.

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基于新型130nm CMOS运算电流放大器的宽带反馈放大器

本文详细分析了反馈放大器的两种主要拓扑结构。一种是基于运算跨导放大器，但带宽有限。另一种是基于运算电流放大器，可以实现宽带宽。为了在1.2 V供电的130 nm CMOS上实现宽带反馈放大器，提出了一种具有合理CMRR和宽输出摆幅的新型运算电流放大器。该反馈放大器从1.2 V电源吸取2.1 mA，同时在14 db增益设置下获得160 MHz带宽和20.4 dBm IIP3。CMRR在100khz范围内为79db，在2.5 GHz范围内为20db。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)

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