A fully integrated low noise CMOS instrumentation amplifier design for low-power biosensors

Vighnesh Rudra Das, Donald Y.C. Lie, Tam Nguyen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

This paper presents the design of a monolithic low power CMOS low-noise instrumentation amplifier (INA) for low-power biosensor applications. To achieve high-fidelity cardiac signal acquisition, the INA circuit and system design requirements are discussed. Design strategies for mitigating the in-band flicker noise and thermal noise using chopper-stabilization and current scaling techniques are investigated. Sub-threshold operation is also utilized to reduce power. The INA achieves a simulated noise spectral density of 39.9 nV/√Hz from dc to 300Hz in 4.6μW, with an outstanding noise efficiency factor (NEF) of 2.47.

Original languageEnglish
Title of host publication2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages535-538
Number of pages4
ISBN (Electronic)9781479941346, 9781479941346
DOIs
StatePublished - Sep 23 2014
Event2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014 - College Station, United States
Duration: Aug 3 2014Aug 6 2014

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Conference

Conference2014 IEEE 57th International Midwest Symposium on Circuits and Systems, MWSCAS 2014
CountryUnited States
CityCollege Station
Period08/3/1408/6/14

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