Title: A 0.09 mu W Low Power Front-End Biopotential Amplifier for Biosignal Recording
Authors: Tseng, Yuhwai
Ho, Yingchieh
Kao, Shuoting
Su, Chauchin
電子工程學系及電子研究所
電控工程研究所
Department of Electronics Engineering and Institute of Electronics
Institute of Electrical and Control Engineering
Keywords: Biopotential recording;chopper amplifier;flicker noise;instrumentation amplifier
Issue Date: 1-Oct-2012
Abstract: This work presents a biopotential front-end amplifier in which the MOS transistors are biased in subthreshold region with a supply voltage and current of 0.4-0.8 V and 0.23-1.86 mu A, respectively, to reduce the system power. Flicker noise is then removed using a chopping technique, and differential interference produced by electrode impedance imbalance is suppressed using a Gm-C filter. Additionally, the circuit is fabricated using TSMC 0.18 mu m CMOS technology with a core area of 0.77 X 0.36 mm(2). With a minimum supply voltage of 0.4 V, the measured SNR and power consumption of the proposed IC chip are 54.1 dB and 0.09 mu W, respectively.
URI: http://dx.doi.org/10.1109/TBCAS.2012.2188029
http://hdl.handle.net/11536/20933
ISSN: 1932-4545
DOI: 10.1109/TBCAS.2012.2188029
Journal: IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
Volume: 6
Issue: 5
Begin Page: 508
End Page: 516
Appears in Collections:Articles


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