Low-power and wide-dynamic-range sigma-delta modulator for an ECG acquisition system

Jia Ren Chiou, Ching Chieh Chang, Shuenn-Yuh Lee

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

1 Citation (Scopus)

Abstract

An analog front-end circuit system, which includes an adaptive sigma-delta modulator (SDM) with a wide dynamic range and a low power consumption, is proposed for an electroencephalogram acquisition system. The required loop filter for the SDM is implemented using Gm-C integrators, which can significantly reduce power consumption and facilitate flexible coefficient adjustment. The performance of the detection system is also improved by employing an adaptive structure and a dynamic range extension algorithm. The system includes a chopper, an SDM, a digital filter with a chopper, and a calibration unit. Circuit simulation reveals that the dynamic range can be extended by more than 40 dB, and accurate results are achieved by the proposed brain signal acquisition system.

Original languageEnglish
Title of host publication4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages95-98
Number of pages4
ISBN (Electronic)9781467366090
DOIs
Publication statusPublished - 2015 Dec 2
Event4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015 - Beijing, China
Duration: 2015 Oct 142015 Oct 17

Publication series

Name4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015

Other

Other4th International Symposium on Bioelectronics and Bioinformatics, ISBB 2015
CountryChina
CityBeijing
Period15-10-1415-10-17

All Science Journal Classification (ASJC) codes

  • Health Informatics
  • Biotechnology
  • Signal Processing
  • Electrical and Electronic Engineering

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