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Sensors 2016, 16(3), 354; doi:10.3390/s16030354

A Dynamic Instrumentation Amplifier for Low-Power and Low-Noise Biopotential Acquisition

1
Samsung Electronics Inc., Suwon 16678, Korea
2
Department of Electronics, Chungnam National University, Daejeon 34134, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 24 January 2016 / Revised: 3 March 2016 / Accepted: 4 March 2016 / Published: 9 March 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [5599 KB, uploaded 9 March 2016]   |  

Abstract

A low-power and low-noise dynamic instrumentation amplifier (IA) for biopotential acquisition is presented. A dynamic IA that can reduce power consumption with a timely piecewise power-gating method, and noise level with an alternating input and chopper stabilization technique is fabricated with a 0.13-μm CMOS. Using the reconfigurable architecture of the IA, various combinations of the low-noise schemes are investigated. The combination of power gating and chopper stabilization shows a lower noise performance than the combination of power gating and alternating input switching scheme. This dynamic IA achieved a power reduction level of 50% from 10 µA to 5 µA and a noise reduction of 90% from 9.1 µVrms to 0.92 µVrms with the combination of the power gating and chopper stabilization scheme. View Full-Text
Keywords: biopotential; dynamic instrumentation amplifier; power gating; alternating input; chopper stabilization biopotential; dynamic instrumentation amplifier; power gating; alternating input; chopper stabilization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kim, J.; Ko, H. A Dynamic Instrumentation Amplifier for Low-Power and Low-Noise Biopotential Acquisition. Sensors 2016, 16, 354.

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