采用线性度改进技术的180nm CMOS三级前馈补偿运放用于有源RC LPF

2016 10th IEEE International Conference on Anti-counterfeiting, Security, and Identification (ASID) Pub Date : 2016-09-01 DOI:10.1109/ICASID.2016.7873924

Wenxin Wu, Tingting Mo, Zhijian Lu

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引用次数: 5

摘要

介绍了全差分运算放大器和级联系统的非线性分析。设计了一种具有前馈补偿和线性度改进技术的多级运放电路。所提出的运放采用电流复用、分路技术。本文以非线性分析为指导，对采用该运放的10MHz带宽4阶Chebyshev-I梯形有源rc LPF进行了仿真和优化。优化后的LPF带内IIP3可以在4.5MHz和4.6MHz的测试双音输入信号中实现50.2dBm，而在180nm CMOS技术下，1.8V电源消耗14.76mW。

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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A 180nm CMOS three stage feedforward compensation op-amp with linearity improvement technique for active RC LPF

The nonlinearity analysis of the full differential operational amplifier (op-amp) and Cascade System are introduced. A multistage op-amp with feedforward compensation (FFC) and linearity improvement technique circuit is designed. The proposed op-amp utilizes a current-reusing, split path technology. A 10MHz bandwidth 4th-order, Chebyshev-I, ladder active-RC LPF employing the op-amp in this paper is simulated and optimized with the guideline of the nonlinearity analysis. The optimized in-band IIP3 of the LPF can achieve 50.2dBm in a test two-tone input signal at 4.5MHz and 4.6MHz while consuming 14.76mW from a 1.8V supply in 180nm CMOS technology.

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来源期刊

2016 10th IEEE International Conference on Anti-counterfeiting, Security, and Identification (ASID)

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