DocumentCode
3742569
Title
A CMOS CFIA with digitally controlled gain designed for EEG systems
Author
Soliman A. Mahmoud;Aisha A. Alhammadi
Author_Institution
Department of Electrical and Computer Engineering, University of Sharjah, Sharjah, UAE
fYear
2015
Firstpage
57
Lastpage
58
Abstract
The current feedback instrumentation amplifier (CFIA) designed for EEG detection systems is presented. This CFIA includes two digitally programmable operational transconductance amplifiers (DPOTAs) and a current feedback operational amplifier (CFOA) where the digital control of DPOTA is done using 4-bit current division network (CDN). PSpice simulation results are carried out using 0.25μm IBM CMOS process under ±0.8V supply voltage. The CFIA reaches 126.6dB common mode rejection ratio (CMRR), consumes 695μW, and has 9.4777μV/√Hz input referred noise. The achieved gain is from 22.236dB to 45.386dB. These results make the CFIA suitable for the EEG detection systems.
Keywords
"Electroencephalography","Instruments","CMOS integrated circuits","Transconductance","Bandwidth","Operational amplifiers","Digital control"
Publisher
ieee
Conference_Titel
SoC Design Conference (ISOCC), 2015 International
Type
conf
DOI
10.1109/ISOCC.2015.7401638
Filename
7401638
Link To Document