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dc.contributor.authorTavakoli, Maziar
dc.contributor.authorTuricchia, Lorenzo
dc.contributor.authorSarpeshkar, Rahul
dc.date.accessioned2011-04-08T21:18:03Z
dc.date.available2011-04-08T21:18:03Z
dc.date.issued2009-12
dc.date.submitted2009-06
dc.identifier.issn1932-4545
dc.identifier.otherINSPEC Accession Number: 11102451
dc.identifier.urihttp://hdl.handle.net/1721.1/62185
dc.description.abstractPulse oximeters are ubiquitous in modern medicine to noninvasively measure the percentage of oxygenated hemoglobin in a patient's blood by comparing the transmission characteristics of red and infrared light-emitting diode light through the patient's finger with a photoreceptor. We present an analog single-chip pulse oximeter with 4.8-mW total power dissipation, which is an order of magnitude below our measurements on commercial implementations. The majority of this power reduction is due to the use of a novel logarithmic transimpedance amplifier with inherent contrast sensitivity, distributed amplification, unilateralization, and automatic loop gain control. The transimpedance amplifier, together with a photodiode current source, form a high-performance photoreceptor with characteristics similar to those found in nature, which allows LED power to be reduced. Therefore, our oximeter is well suited for portable medical applications, such as continuous home-care monitoring for elderly or chronic patients, emergency patient transport, remote soldier monitoring, and wireless medical sensing. Furthermore, our design obviates the need for an A-to-D and digital signal processor and leads to a small single-chip solution. We outline how extensions of our work could lead to submilliwatt oximeters.en_US
dc.language.isoen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/tbcas.2009.2033035en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceIEEEen_US
dc.subjectUnited States. Office of Naval Research (Contract No. N00014-02-1- 0434)en_US
dc.titleAn Ultra-Low-Power Pulse Oximeter Implemented With an Energy-Efficient Transimpedance Amplifieren_US
dc.typeArticleen_US
dc.identifier.citationTavakoli, M., L. Turicchia, and R. Sarpeshkar. “An Ultra-Low-Power Pulse Oximeter Implemented With an Energy-Efficient Transimpedance Amplifier.” Biomedical Circuits and Systems, IEEE Transactions On 4.1 (2010) : 27-38. Copyright © 2010, IEEEen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Scienceen_US
dc.contributor.departmentMassachusetts Institute of Technology. Research Laboratory of Electronicsen_US
dc.contributor.approverSarpeshkar, Rahul
dc.contributor.mitauthorTavakoli, Maziar
dc.contributor.mitauthorTuricchia, Lorenzo
dc.contributor.mitauthorSarpeshkar, Rahul
dc.relation.journalIEEE transactions on biomedical circuits and systemsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsTavakoli, M.; Turicchia, L.; Sarpeshkar, R.en
dc.identifier.orcidhttps://orcid.org/0000-0003-0384-3786
dspace.mitauthor.errortrue
mit.licensePUBLISHER_POLICYen_US


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