Title :
A low-voltage low-power QFG-based Sigma-Delta modulator for electroencephalogram applications
Author :
Lopez-Morillo, E. ; Carvajal, R.G. ; Galan, J. ; Ramirez-Angulo, Jaime ; Lopez-Martin, Antonio ; Rodriguez-Villegas, E.
Author_Institution :
Escuela Super. de Ing., Seville Univ., Sevilla
fDate :
Nov. 29 2006-Dec. 1 2006
Abstract :
A Sigma-Delta (SigmaDelta) modulator with 10 bits of resolution and only 55 nW power consumption for electroencephalogram (EEG) applications is presented. The overall modulator operates from 1.2 V using Quasi-Floating-Gates (QFG) based circuits. The system has been implemented in a standard 0.5-mum CMOS process. Post-layout simulations have been performed showing 70 dB of SNR with an oversampling ratio of 64.
Keywords :
CMOS integrated circuits; biomedical electronics; electroencephalography; low-power electronics; sigma-delta modulation; CMOS process; EEG; SigmaDelta modulator; electroencephalogram; low-voltage low-power QFG; power 55 nW; quasifloating-gates based circuits; sigma-delta modulator; size 0.5 mum; voltage 1.2 V; Application software; Brain modeling; Circuit simulation; Delta-sigma modulation; Electroencephalography; Energy consumption; Filters; Frequency; Signal processing; Strontium;
Conference_Titel :
Biomedical Circuits and Systems Conference, 2006. BioCAS 2006. IEEE
Conference_Location :
London
Print_ISBN :
978-1-4244-0436-0
Electronic_ISBN :
978-1-4244-0437-7
DOI :
10.1109/BIOCAS.2006.4600322
