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A Configurable Integrated Circuit for Biomedical Signal Acquisition

  • Jakob M. Tomasik
  • Wjatscheslaw Galjan
  • Kristian M. Hafkemeyer
  • Dietmar Schroeder
  • Wolfgang H. Krautschneider
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 273)

Abstract

A 10 channel CMOS integrated circuit (IC) for biomedical signal acquisition is presented. Each channel of the IC includes a programmable analog front-end (AFE) and a 20 bit analog-to-digital converter (ADC). An active DC-suppression circuitry allows to tolerate DC-offsets of up to ±1 V for a power supply voltage of 3.3 V. The AFE includes a common-mode rejection ratio (CMRR) calibration circuitry resulting in a CMRR of more than 80 dB. In low-noise mode the AFE achieves an input referred noise of less than 0.11 μV rms for EEG application (0.5-70 Hz) and the power consumption of the IC is less than 30 mW in low-power mode. An experimental USB-Stick for biomedical signal acquisition has been realized using the IC.

Keywords

Biomedical signals IC Low-power Low-noise Configurable CMRR-calibration DC-suppression 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Jakob M. Tomasik
    • 1
  • Wjatscheslaw Galjan
    • 1
  • Kristian M. Hafkemeyer
    • 2
  • Dietmar Schroeder
    • 1
  • Wolfgang H. Krautschneider
    • 1
  1. 1.Institute of NanoelectronicsHamburg University of TechnologyHamburgGermany
  2. 2.NXP Semiconductors Germany GmbHHamburgGermany

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