High-Gm Differential Regulated Cascode Transimpedance Amplifier

被引：0

作者：

谢生 ^{[1
]}

陶希子 ^{[1
]}

毛陆虹 ^{[1
]}

高谦 ^{[1
]}

吴思聪 ^{[1
]}

机构：

[1] School of Electronic Information Engineering,Tianjin University

来源：

Transactions of Tianjin University | 2016年 / 04期

基金：

中国国家自然科学基金;

关键词：

transimpedance amplifier; regulated cascode; cross-coupled; shunt active inductor;

D O I：

暂无

中图分类号：

TN722 [放大器];

学科分类号：

080902 ;

摘要：

A differential cross-coupled regulated cascode（RGC）transimpedance amplifier（TIA）is proposed. The theory of multi-stage common-source（CS） configuration as an auxiliary amplifier to enhance the bandwidth and output impedance of RGC topology is analyzed. Additionally, negative Miller capacitance and shunt active inductor compensation are exploited to further expand the bandwidth. The proposed RGC TIA is simulated based on UMC 0.18 μm standard CMOS process. The simulation results demonstrate that the proposed TIA has a high transimpedance of 60.5 d B?, and a-3 d B bandwidth of 5.4 GHz is achieved for 0.5 p F input capacitance. The average equivalent input noise current spectral density is about 20 p A/Hz;in the interested frequency, and the TIA consumes 20 m W DC power under 1.8 V supply voltage. The voltage swing is 460 m V pp, and the saturation input current is 500 μA.

引用

页码：345 / 351

页数：7

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