Low power transimpedance amplifier using current reuse with dual feedback

Diaa Abd-Elrahman, Mohamed Atef, Mohamed Abbas, Mohamed Abdelgawad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper presents a transimpedance amplifier (TIA) topology employing current-reuse technique to achieve low power operation. A dual feedback is employed in addition to the current-reuse (CRDF-TIA) to extend the bandwidth while keeping the low power consumption. For large area photodiodes with 2 pF total input capacitance the CRDF-TIA post layout simulation shows a transimpedance gain of 56.75 dBQ and 2 GHz bandwidth. The CRDF-TIA shows a 835nA input-referred noise current and a sensitivity of -22.3 dBm at BER of 10-12. An analytical noise model is derived showing a good accuracy compared to the simulated results. An optical receiver employing the proposed TIA as preamplifier is implemented in 130nm CMOS technology. The TIA is followed by post amplifier and 50 output driver. The complete optical receiver achieves 85.2dB and 1.6 GHz bandwidth. The CRDF-TIA alone consumes 2.85 mW from 1.5 V power supply and the total power consumption of the chip is 29.4 mW.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages244-247
Number of pages4
ISBN (Electronic)9781509002467
DOIs
Publication statusPublished - Mar 23 2016
Externally publishedYes
EventIEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015 - Cairo, Egypt
Duration: Dec 6 2015Dec 9 2015

Publication series

NameProceedings of the IEEE International Conference on Electronics, Circuits, and Systems
Volume2016-March

Other

OtherIEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015
Country/TerritoryEgypt
CityCairo
Period12/6/1512/9/15

Keywords

  • Bandwidth Extension
  • Low Power
  • Optical Receiver
  • Transimpedance Amplifier (TIA)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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