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

Yang Guo Li; Mohammad Rafiqul Haider; Yehia Massoud

doi:10.1007/s10470-012-0013-7

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

Yang Guo Li, Mohammad Rafiqul Haider, Yehia Massoud

Research output: Contribution to journal › Article › peer-review

4 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 language	English (US)
Pages (from-to)	485-489
Number of pages	5
Journal	Analog Integrated Circuits and Signal Processing
Volume	74
Issue number	2
DOIs	https://doi.org/10.1007/s10470-012-0013-7
State	Published - Feb 1 2013
Externally published	Yes

ASJC Scopus subject areas

Hardware and Architecture
Signal Processing
Surfaces, Coatings and Films

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10.1007/s10470-012-0013-7

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title = "A low-noise gain-tunable amplifier for large array biopotential recording systems",

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. {\textcopyright} Springer Science+Business Media, LLC 2012.",

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AB - 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.

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

Abstract

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