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CMRR in Instrumentation Amplifier for BME Signal – Using Op Amp Power Supply Current Sensing Technique
Jin Tao Li; Sio Hang Pun; Mang I Vai; Peng Un Mak; Pui In Mak; Feng Wan
2009-10
Source Publication生物医学传感器与芯片技术
Pages741-744
Abstract

This paper analyzes the CMRR for a BME current mode instrumentation amplifier (CMIA) using operational amplifier power supply current sensing technique. A set of equations are derived for the case when all op amps have finite differential mode and common mode gains. In low frequency band where biopotential signals are usually located, better CMRR is achieved relying on better matching of two input op amps including their differential mode and common mode gains and also CMRRs. CMRR in three op amp IA is briefly reviewed and compared with CMIA. Simulation shows the results of theoretical analysis

KeywordCmrr Instrumentation Amplifier Cmia
Language英语
Fulltext Access
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationDepartment of Electrical and Electronics Engineering, Faculty of Science and Technology, University of Macau
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Jin Tao Li,Sio Hang Pun,Mang I Vai,et al. CMRR in Instrumentation Amplifier for BME Signal – Using Op Amp Power Supply Current Sensing Technique[J]. 生物医学传感器与芯片技术,2009:741-744.
APA Jin Tao Li,Sio Hang Pun,Mang I Vai,Peng Un Mak,Pui In Mak,&Feng Wan.(2009).CMRR in Instrumentation Amplifier for BME Signal – Using Op Amp Power Supply Current Sensing Technique.生物医学传感器与芯片技术,741-744.
MLA Jin Tao Li,et al."CMRR in Instrumentation Amplifier for BME Signal – Using Op Amp Power Supply Current Sensing Technique".生物医学传感器与芯片技术 (2009):741-744.
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