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dc.contributor.authorBandyopadhyay, Saurav
dc.contributor.authorMercier, Patrick Philip
dc.contributor.authorLysaght, Andrew Christopher
dc.contributor.authorStankovic, Konstantina M.
dc.contributor.authorChandrakasan, Anantha P.
dc.date.accessioned2015-12-13T20:16:29Z
dc.date.available2015-12-13T20:16:29Z
dc.date.issued2014-09
dc.identifier.issn0018-9200
dc.identifier.issn1558-173X
dc.identifier.urihttp://hdl.handle.net/1721.1/100220
dc.description.abstractThis paper presents a nW power management unit (PMU) for an autonomous wireless sensor that sustains itself by harvesting energy from the endocochlear potential (EP), the 70-100 mV electrochemical bio-potential inside the mammalian ear. Due to the anatomical constraints inside the inner ear, the total extractable power from the EP is limited close to 1.1-6.25 nW. A nW boost converter is used to increase the input voltage (30-55 mV) to a higher voltage (0.8-1.1 V) usable by CMOS circuits in the sensor. A pW charge pump circuit is used to minimize the leakage in the boost converter. Furthermore, ultralow-power control circuits consisting of digital implementations of input impedance adjustment circuits and zero current switching circuits along with Timer and Reference circuits keep the quiescent power of the PMU down to 544 pW. The designed boost converter achieves a peak power conversion efficiency of 56%. The PMU can sustain itself, and a duty-cyled ultralow-power load while extracting power from the EP of a live guinea pig. The PMU circuits have been implemented on a 0.18- μm CMOS process.en_US
dc.description.sponsorshipSemiconductor Research Corporation. Focus Center for Circuit and System Solutions (C2S2)en_US
dc.description.sponsorshipInterconnect Focus Center (United States. Defense Advanced Research Projects Agency and Semiconductor Research Corporation)en_US
dc.description.sponsorshipNational Institutes of Health (U.S.) (Grant K08 DC010419)en_US
dc.description.sponsorshipNational Institutes of Health (U.S.) (Grant T32 DC00038)en_US
dc.description.sponsorshipBertarelli Foundationen_US
dc.language.isoen_US
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/JSSC.2014.2350260en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourcePMCen_US
dc.titleA 1.1 nW Energy-Harvesting System with 544 pW Quiescent Power for Next-Generation Implantsen_US
dc.typeArticleen_US
dc.identifier.citationBandyopadhyay, Saurav, Patrick P. Mercier, Andrew C. Lysaght, Konstantina M. Stankovic, and Anantha P. Chandrakasan. “A 1.1 nW Energy-Harvesting System with 544 pW Quiescent Power for Next-Generation Implants.” IEEE Journal of Solid-State Circuits 49, no. 12 (December 2014): 2812–2824.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Scienceen_US
dc.contributor.mitauthorBandyopadhyay, Sauraven_US
dc.contributor.mitauthorChandrakasan, Anantha P.en_US
dc.relation.journalIEEE Journal of Solid-State Circuitsen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBandyopadhyay, Saurav; Mercier, Patrick P.; Lysaght, Andrew C.; Stankovic, Konstantina M.; Chandrakasan, Anantha P.en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-5977-2748
dc.identifier.orcidhttps://orcid.org/0000-0002-1242-6768
mit.licenseOPEN_ACCESS_POLICYen_US


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