A 55.77 mu W Bio-impedance Sensor with 276 mu s Settling Time for Portable Blood Pressure Monitoring System

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An ultra-low power bio-impedance sensor for wrist watch-type blood pressure monitoring system is implemented in 0.18 mu m CMOS technology under 1.8 V supply. The duty-cycled current generator (DCG) enables low power and high amplitude current injection with 93.58% power reduction in a current generator block. A fast-settling readout circuit with DC balanced amplifier reduces settling time to 276 mu s, allowing bio-impedance signal acquisition even when the motion artifact induced circuit transient occurs. The simulated 2.125 mm(2) single chip bio-impedance sensor consumes only 55.77 mu W.
Publisher
IEEK PUBLICATION CENTER
Issue Date
2017-12
Language
English
Article Type
Article
Citation

JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, v.17, no.6, pp.912 - 919

ISSN
1598-1657
DOI
10.5573/JSTS.2017.17.6.912
URI
http://hdl.handle.net/10203/238770
Appears in Collection
EE-Journal Papers(저널논문)
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