A chopper stabilized instrumentation amplifier with dual DC cancellation servo loops for biomedicai applications

Author

Dong Han ; Yuanjin Zheng

Author_Institution

IC Design Centre of Excellence, Nanyang Technol. Univ., Singapore, Singapore

fYear

2012

fDate

12-14 Nov. 2012

Firstpage

49

Lastpage

52

Abstract

A 1V 65nm 4.3μW differential difference amplifier based instrumentation amplifier for biomedical applications has been presented. To eliminate the DC baseline drift of the biomedical signals, novel and efficient fine-coarse DC offset cancellation servo loops have been proposed. Measured results show that the proposed instrumentation amplifier achieves 0.8μVrms input referred noise from 0.5Hz to 200Hz with inband gain of 65.5V/V and noise efficiency factor of 5.7 for electrocardiograph signal monitoring.

Keywords

biomedical electronics; differential amplifiers; electrocardiography; instrumentation amplifiers; DC baseline drift elimination; biomedical application; biomedical signals; chopper-stabilized instrumentation amplifier; differential difference amplifier-based instrumentation amplifier; dual-DC cancellation servo loops; electrocardiograph signal monitoring; fine-coarse DC offset cancellation servo loops; noise efficiency factor; power 4.3 muW; size 65 nm; voltage 0.8 muV; voltage 1 V;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Circuits Conference (A-SSCC), 2012 IEEE Asian

Conference_Location

Kobe

Type

conf

DOI

10.1109/IPEC.2012.6522624

Filename

6522624