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A Programmable Low Power Current Source for Bioimpedance Measurement: Towards a Wearable Personalized Health
KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK.
KTH, School of Information and Communication Technology (ICT), Industrial and Medical Electronics. University of Turku (UTU), Finland.
KTH, School of Information and Communication Technology (ICT), Industrial and Medical Electronics.
2015 (English)In: 2015 37th Annual International Conference of The IEEE ENGINEERING in Medicine and Biology Society (EMBC), 2015, 2038-2042 p.Conference paper, Published paper (Refereed)
Abstract [en]

Bioimpedance is a noninvasive measurement method that facilitates body composition analysis, besides being indicative of many other health parameters. In this work a novel programmable, low complexity, high output impedance, high voltage compliance and wideband current source for bioimpedance applications is presented. Previously, we designed, fabricated and tested in vivo a bio-patch for acquisition of multiple bio-signals [1]. Upon integration with our previous work, this circuit is envisioned to constitute part of a personalized health assistant. Simulation at worst case corners and real operation conditions was carried out using UMC-180 nm 1 poly 6 metal CMOS process. Full duty cycle, shortened or stepped square waves can be generated. Amplitude control of 8 different current levels is supported. Frequency can be tuned up to 1 MHz and an output impedance of 2.8 MO @ 250 KHz is achieved at full current capacity. Total current consumption is comparable to the injected current, making the circuit highly efficient.

Place, publisher, year, edition, pages
2015. 2038-2042 p.
Series
IEEE Engineering in Medicine and Biology Society Conference Proceedings, ISSN 1557-170X
Keyword [en]
Bioimpedance, current source, wearable, digital to analog (DAC), H-bridge, personalized health assistant
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:kth:diva-168898DOI: 10.1109/EMBC.2015.7318787ISI: 000371717202081Scopus ID: 2-s2.0-84953257951ISBN: 978-1-4244-9270-1 (print)OAI: oai:DiVA.org:kth-168898DiVA: diva2:818781
Conference
37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015, MiCo Center, Milano Congressi CenterMilan, Italy, 25 August 2015 through 29 August 2015
Note

QC 20151215

Available from: 2015-06-09 Created: 2015-06-09 Last updated: 2016-04-21Bibliographically approved

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CiteExportLink to record
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