A micropower CMOS amplifier for portable surface EMG recording

P. K. Chan, G. A. Hanasusanto, H. B. Tan, V. K.S. Ong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A CMOS biomedical preamplifier for portable skin surface Electromyograph (EMG) signal recording is presented. The bioamplifier includes an improved pseudoresistor for realizing a large time constant high-pass filter, an improved differential difference amplifier (DDA) for increasing bandwidth efficiency and a modified MOSFET floating resistor using linearized native NMOS transistors to enable low-pass filter design in reduced supply environment. By incorporating chopper stabilization, an input-referred noise of 2.76 μVrms is attainable for bandwidth of 1.5 kHz. The simulation results are based on BSIM3 models from TSMC 0.25 μm CMOS technology at dual supply of ± 1.5V. The proposed EMG amplifier permits fully integration, with a power consumption of 685 μW (without including power of micropower oscillator).

Original languageEnglish (US)
Title of host publicationAPCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems
Pages490-493
Number of pages4
DOIs
StatePublished - 2006
Externally publishedYes
EventAPCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems - , Singapore
Duration: Dec 4 2006Dec 6 2006

Publication series

NameIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

Conference

ConferenceAPCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems
Country/TerritorySingapore
Period12/4/0612/6/06

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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