Low-power switched-capacitor delta-sigma modulator for EEG recording applications

作     者：陈进 张旭 陈弘达 

作者机构：State Key Laboratory of Integrated OptoelectronicsInstitute of SemiconductorsChinese Academy of Sciences 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2010年第31卷第7期

页      面：121-126页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：Project supported by the National Natural Science Foundation of China(Nos.60776024,60877035,90820002,60976026) the National High Technology Research and Development Program of China(Nos.2007AA04Z329,2007AA04Z254) 

主　　题：analog-to-digital converter delta-sigma modulator EEG switched-capacitor circuit 

摘      要：This paper presents a third-order single-loop delta-sigma modulator of a biomedical micro-system for portable electroencephalogram（EEG） monitoring *** reduce the power consumption,the loop filter of the proposed modulator is implemented by applying a switched-capacitor *** modulator is designed in a 0.35-μm 2P4M standard CMOS process,with an active area of 365×290μm^*** results show that this modulator achieves a 68 dB dynamic range with an input sinusoidal signal of 100 Hz signal bandwidth under a 64 over-sampling *** whole circuit consumes 515μW under a 2.5 V power supply,which is suitable for portable EEG monitoring.