A low-noise gain-tunable amplifier for large array biopotential recording systems

Yang Guo Li, Mohammad Rafiqul Haider, Yehia Massoud

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This paper presents a low-noise gain-tunable biopotential amplifier that is designed based on a foldedcascode structure. Sub-threshold and self-biasing techniques are employed to achieve a low-noise and low-power amplification. With a bias-current tuning block, the gain of the proposed biopotential amplifier can be precisely adjusted. Designed in a standard 0.13 lm CMOS process, the proposed amplifier provides a 5.9 kHz bandwidth and 30.1 dB gain with 732 nW power. The input-referred noise over the entire bandwidth is 4.3 μV rms, equivalent to a noise-efficiency factor of 2.48. © Springer Science+Business Media, LLC 2012.
Original languageEnglish (US)
Pages (from-to)485-489
Number of pages5
JournalAnalog Integrated Circuits and Signal Processing
Volume74
Issue number2
DOIs
StatePublished - Feb 1 2013
Externally publishedYes

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Surfaces, Coatings and Films

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