A power-efficient current-feedback instrumentation amplifier for precision bridge readout

Moaaz Ahmed, Saqib Mohamad, Amine Bermak

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

4 Citations (Scopus)

Abstract

A current-feedback instrumentation amplifier (CFIA) for precision bridge-readout intended for MEMs flow sensor is presented. The proposed CFIA is chopped to bring input-referred offset below 12μV and flicker-noise corner around 2mHz. Implemented in chartered 0.18μm CMOS process, the CFIA draws 250μA supply current and achieves a competitive noise efficiency factor (NEF) of 30.5. The low-power consumption is attributed to the gm/ID based design methodology adopted in designing the folded-cascode amplifiers while considering careful trade-offs between power, thermal noise and input-referred offset.

Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages555-558
Number of pages4
ISBN (Electronic)9781479983636
DOIs
Publication statusPublished - 30 Sep 2015
Externally publishedYes
Event11th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015 - Singapore, Singapore
Duration: 1 Jun 20154 Jun 2015

Other

Other11th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015
CountrySingapore
CitySingapore
Period1/6/154/6/15

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Keywords

  • chopping
  • current-feedback instrumentation amplifier
  • g/I design methodology
  • Instrumentation amplifier
  • noise efficiency factor (NEF)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Ahmed, M., Mohamad, S., & Bermak, A. (2015). A power-efficient current-feedback instrumentation amplifier for precision bridge readout. In Proceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015 (pp. 555-558). [7285174] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EDSSC.2015.7285174