A 0.6 V, 1.66mW energy harvester and audio driver for tympanic membrane transducer with wirelessly optical signal and power transfer

Jhong Ting Jian, Yu Lin Song, Chia Fone Lee, Yuan Fang Chou, Wei-Zen Chen

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

1 Scopus citations

Abstract

An energy harvester and ultra-low-voltage audio driver to mechanically stimulate tympanic membrane (TM) transducer is presented. By wirelessly optical signal and power transfer, the audio driver is able to directly drive the actuator on the TM to improve sound quality while avoiding occlusion effects. The measured THD+N is 0.4% over the audio bandwidth with modulation index of 0.4, and maximum power conversion efficiency is 24.7%. The core circuits dissipate 1.66mW from 0.6 V through optical power transfer. Fabricated in TSMC 90 nm CMOS technology, the chip size is 0.88×0.84mm2.

Original languageEnglish
Title of host publication2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages874-877
Number of pages4
ISBN (Print)9781479934324
DOIs
StatePublished - 1 Jan 2014
Event2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC, Australia
Duration: 1 Jun 20145 Jun 2014

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

Conference2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
Country/TerritoryAustralia
CityMelbourne, VIC
Period1/06/145/06/14

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