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Analog Integrated Circuits and Signal Processing

, Volume 101, Issue 2, pp 229–235 | Cite as

A 2.5-Gb/s CMOS optical receiver with wide dynamic range using dual AGCs

  • Ya Fang
  • Jin HeEmail author
  • Deshui Yu
  • Hao Wang
  • Sheng Chang
  • Qijun Huang
  • Zhiqiang Tong
Article
  • 49 Downloads

Abstract

A 2.5-Gb/s optical receiver with wide dynamic range has been developed in a 55-nm standard CMOS technology. As the input stage of the proposed optical receiver, a transimpedance amplifier of a three-cascaded inverting topology with a feedback resistor incorporates dual automatic gain controls to broaden the input dynamic range. Followed by a post amplifier and a 50-Ω output buffer, the measured input sensitivity, overload, and dynamic range of the optical receiver are respectively − 26 dBm, 3 dBm, and 29 dB for a bit-error rate of 10−12 at 2.5 Gb/s. The whole receiver draws a total current of 36 mA from a 3.3 V supply and the chip has an area of 1176 μm × 985 μm.

Keywords

Optical receiver Transimpedance amplifier (TIA) Dual AGCs Dynamic range Active inductor CMOS 

Notes

Acknowledgements

This work was supported by the Fundamental Research. Funds for the Central Universities, Wuhan University (2042015kf0174 and 2042014kf0238), the National Natural Science Fundamental of China (61774113, 61204096 and 61404094), and the China Postdoctoral Science Foundation (2012T50688).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Physics and TechnologyWuhan UniversityWuhanChina
  2. 2.Analog Department of Fesilink Microelectronic Technology Co.WuhanChina

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