Low Power Low-Voltage CMOS A/D Switched-Opamp SD Modulator for Bio-Potential Signals using a Single-Phase Scheme

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Abstract

This paper presents a low-power and low-voltage analogue-to-digital (A/D) interface module for biomedical applications. This module provides an A/D conversion based on a switched-op amp second-order ΣΔ modulator, capable of interfacing with several different types electrical signals existing in the human body, only by re-programming the digital filter at the output the ΣΔ architecture employs a novel single-phase scheme technique, which improves the dynamic performance and highly reduces the clocking circuitry complexity, substrate noise and area.
Original languageEnglish
Title of host publicationIEEE International Workshop on Biomedical Circuits and Systems, 2004
Place of PublicationPiscataway
PublisherIEEE
ISBN (Print)0-7803-8665-5
DOIs
Publication statusPublished - 1 Jan 2004
Event2004 IEEE International Workshop on Biomedical Circuits and Systems - , Singapore
Duration: 1 Dec 20043 Dec 2004

Conference

Conference2004 IEEE International Workshop on Biomedical Circuits and Systems
CountrySingapore
Period1/12/043/12/04

Keywords

  • Phase modulation
  • Delta modulation
  • Digital filters
  • Electrocardiography
  • Digital modulation
  • Bandwidth
  • Batteries
  • Noise reduction
  • Circuit noise
  • Electrooculography

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