Fully-Differential 100-Gb/s PAM4 Cross-Coupled Regulated Transimpedance Amplifier

Dongfan Xu,Zhang Qiu,Xiongshi Luo,Xuewei You,Wenbo Xiao,Siqiang Zhu,Minzhe Tang,Zhenghao Li,Quan Pan

2020 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA)（2020）

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摘要

This paper describes a broadband differential regulated cascode (RGC) transimpedance amplifier (TIA) designed in 130-nm SiGe process. Cross-coupled structure and two common emitter (CE) stages feedback loop are employed to reduce input impedance. The simulation results show that the proposed TIA has 46.35-dB Ω differential transimpedance gain and 35.6-GHz bandwidth (BW). Overall, it achieves a clear 100-Gb/s PAM4 eye diagram. The total power consumption is 84mW.

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关键词

TLA,regulated-cascode,cross-coupled,capacitive peaking,100-Gb/s PAM4 signal

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