An integrated CMOS bio-potential amplifier with a feed-forward DC cancellation topology.

Jayant Parthasarathy, Arthur G. Erdman, Aaron D. Redish, Babak Ziaie

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

This paper describes a novel technique to realize an integrated CMOS bio-potential amplifier with a feedforward DC cancellation topology. The amplifier is designed to provide substantial DC cancellation even while amplifying very low frequency signals. More than 80 dB offset rejection ratio is achieved without any external capacitors. The cancellation scheme is robust against process and temperature variations. The amplifier is fabricated through MOSIS AMI 1.5 microm technology (0.05 mm2 area). Measurement results show a gain of 43.5 dB in the pass band (<1 mHz-5 KHz), an input referred noise of 3.66 microVrms, and a current consumption of 22 microA.

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't

Fingerprint Dive into the research topics of 'An integrated CMOS bio-potential amplifier with a feed-forward DC cancellation topology.'. Together they form a unique fingerprint.

Cite this