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Conference Paper: A 1.8 µW Area-efficient Bio-potential Amplifier with 90 dB DC Offset Suppression

TitleA 1.8 µW Area-efficient Bio-potential Amplifier with 90 dB DC Offset Suppression
Authors
Issue Date2014
PublisherI E E E.
Citation
The IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS), College Station, Texas, USA, 3-6 August 2014. In Midwest Symposium on Circuits and Systems Conference Proceedings, 2014, p. 286-289 How to Cite?
AbstractAn area-efficient and low-power low-noise amplifier with adjustable parameters for bio-potential recording applications is presented. This amplifier replaces traditional analog filters using large AC coupling capacitor with the proposed DC offset suppression block based on Differential Difference Amplifier (DDA) structure, which allows the system to obtain good high pass characterization without using any area-consuming capacitors or resistors. It features configurable gain and bandwidth, which is suitable for various bio-potential applications and massive integration in biomedical devices. More than 90 dB DC offset suppression ratio is achieved in rejecting large DC offset and baseline drift that exist at the skin-electrode interface. The proposed bio-amplifier, designed in a 0.18 µm CMOS process and occupies only 0.027 mm2 silicon area on chip, provides adjustable mid-band gain of 35.5/41.5/47.6/53.6 dB, tunable bandwidth from 0.01 Hz to 10 kHz. The back-annotated simulation results demonstrated the input-referred noise of 5.4 µVrms over 0.01 Hz–10 kHz and the total power dissipation consumed as low as 1.8 µW at 1.2 V power supply.
Persistent Identifierhttp://hdl.handle.net/10722/204173
ISBN
ISSN

 

DC FieldValueLanguage
dc.contributor.authorZhang, Jen_US
dc.contributor.authorChan, SCen_US
dc.contributor.authorWang, Len_US
dc.date.accessioned2014-09-19T20:07:57Z-
dc.date.available2014-09-19T20:07:57Z-
dc.date.issued2014en_US
dc.identifier.citationThe IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS), College Station, Texas, USA, 3-6 August 2014. In Midwest Symposium on Circuits and Systems Conference Proceedings, 2014, p. 286-289en_US
dc.identifier.isbn9781479941346-
dc.identifier.issn1548-3746-
dc.identifier.urihttp://hdl.handle.net/10722/204173-
dc.description.abstractAn area-efficient and low-power low-noise amplifier with adjustable parameters for bio-potential recording applications is presented. This amplifier replaces traditional analog filters using large AC coupling capacitor with the proposed DC offset suppression block based on Differential Difference Amplifier (DDA) structure, which allows the system to obtain good high pass characterization without using any area-consuming capacitors or resistors. It features configurable gain and bandwidth, which is suitable for various bio-potential applications and massive integration in biomedical devices. More than 90 dB DC offset suppression ratio is achieved in rejecting large DC offset and baseline drift that exist at the skin-electrode interface. The proposed bio-amplifier, designed in a 0.18 µm CMOS process and occupies only 0.027 mm2 silicon area on chip, provides adjustable mid-band gain of 35.5/41.5/47.6/53.6 dB, tunable bandwidth from 0.01 Hz to 10 kHz. The back-annotated simulation results demonstrated the input-referred noise of 5.4 µVrms over 0.01 Hz–10 kHz and the total power dissipation consumed as low as 1.8 µW at 1.2 V power supply.-
dc.languageengen_US
dc.publisherI E E E.en_US
dc.relation.ispartofMidwest Symposium on Circuits and Systems Conference Proceedingsen_US
dc.rightsMidwest Symposium on Circuits and Systems Conference Proceedings. Copyright © I E E E.en_US
dc.rights©2014 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleA 1.8 µW Area-efficient Bio-potential Amplifier with 90 dB DC Offset Suppressionen_US
dc.typeConference_Paperen_US
dc.identifier.emailChan, SC: ascchan@hkucc.hku.hken_US
dc.identifier.authorityChan, SC=rp00094en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/MWSCAS.2014.6908408-
dc.identifier.hkuros240661en_US
dc.identifier.spage286-
dc.identifier.epage289-
dc.publisher.placeUnited Statesen_US

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