A low-power current-mode front-end acquisition system for biopotential signal recording

Wei Ming Chen*, Liang Ting Kuo, Chung-Yu Wu

*Corresponding author for this work

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

In this paper, a new current-mode front-end amplifier for biopotential signal recording system is proposed. A current-mode preamplifier incorporates with an active feedback loop to bypass any dc current generated by tissues is designed as the first stage. A programmable gain stage and a current-mode filter are designed to adjust both gain and the low-pass cutoff frequency, respectively. The current-mode front-end amplifier is designed and fabricated in 0.18-μm CMOS technology. The measured maximum current gain is 55.9 dB. The high-pass cutoff frequency can achieve as low as 0.3Hz and the low-pass cutoff frequency can be adjusted from 1 KHz to 10 KHz. The measured input-referred noise is 153fA/Hz, and the power consumption is 13 μW at 1-V power supply.

Original languageEnglish
Pages842-845
Number of pages4
DOIs
StatePublished - 28 Sep 2012
Event2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
Duration: 20 May 201223 May 2012

Conference

Conference2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
CountryKorea, Republic of
CitySeoul
Period20/05/1223/05/12

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    Chen, W. M., Kuo, L. T., & Wu, C-Y. (2012). A low-power current-mode front-end acquisition system for biopotential signal recording. 842-845. Paper presented at 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012, Seoul, Korea, Republic of. https://doi.org/10.1109/ISCAS.2012.6272172