A 90 nm CMOS low noise readout front-end for portable biopotential signal acquisition

Author

Wei-Chih Huang ; Kea-Tiong Tang

Author_Institution

Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

fYear

2012

fDate

28-30 Nov. 2012

Firstpage

33

Lastpage

36

Abstract

This article presents a programmable low-noise readout front-end suitable for biopotential signal acquisition. The chip includes a fully-differential chopper current-balancing instrumentation amplifier, a chopper spike filter, a small Gm-C low pass filter, and a programmable gain amplifier. The chopper current-balancing instrumentation amplifier achieved 104dB CMRR. The integrated input-referred noises within Electro-encephalogram (EEG) bandwidth and Electrocardiogram (ECG) bandwidth were 0.95 μV_rms and 1.51 μV_rms, respectively. Total power consumption was 26.56 μW under 1 V supply. The chip was implemented by TSMC 90nm CMOS 1P9M standard process.

Keywords

CMOS integrated circuits; biomedical electronics; choppers (circuits); electrocardiography; electroencephalography; filtering theory; instrumentation amplifiers; low noise amplifiers; low-pass filters; medical signal processing; power consumption; programmable filters; CMOS low noise readout front-end; ECG; EEG; chopper spike filter; electrocardiogram; electroencephalogram; fully-differential chopper current-balancing instrumentation amplifier; integrated input-referred noises; portable biopotential signal acquisition; power 26.56 muW; power consumption; programmable gain amplifier; size 90 nm; small Gm-C low pass filter; voltage 1 V; Choppers (circuits); Electrocardiography; Electroencephalography; Instruments; Low pass filters; Noise; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference (BioCAS), 2012 IEEE

Conference_Location

Hsinchu

Print_ISBN

978-1-4673-2291-1

Electronic_ISBN

978-1-4673-2292-8

Type

conf

DOI

10.1109/BioCAS.2012.6418476

Filename

6418476