Title :
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
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 μVrms and 1.51 μVrms, 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;
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
DOI :
10.1109/BioCAS.2012.6418476
