A Compact Low-Power Current-to-Digital Readout Circuit for Amperometric Electrochemical Sensors

Details

• Personal Author:
  Ashoori E ; Mason AJ ; Mu X ; Yin H
• Description:
  This paper introduces a novel compact low-power amperometric instrumentation design with current-to-digital out-put for electrochemical sensors. By incorporating the double layer capacitance of an electrochemical sensor's impedance model, our new design can maintain performance while dramatically reducing circuit complexity and size. Electrochemical experiments with potassium ferricyanide show that the circuit output is in a good agreement with results obtained using commercial amperometric instrumentation. A high level of linearity (R2 = 0.991) between thecircuitoutputand theconcentration of potassium ferricyanide was also demonstrated. Furthermore, we show that a CMOS implementation of the presented architecture could save 25.3% of the area and 47.6% of power compared to a traditional amperometric instrumentation structure. Thus, this new circuit structure is ideally suited for portable/wireless electrochemical sensing applications. [Description provided by NIOSH]
• Subjects:
  Chemistry, Analytic Cyanides Environmental Exposure Environmental Pollution Occupational Health Safety
• Keywords:
  Analytical Chemistry Analytical Instrumentation Analytical Instruments Author Keywords: Amperometric Instrumentation Compact Current-to-digital Readout Cyanide Compounds Electrochemical Analysis Electrochemical Reactions Electrochemical Sensor Electrochemistry Environmental Pollution Equipment Design Equipment Testing Gas Detectors Iron Compounds Low Power Measurement Equipment Monitors Performance Tests Potassium Compounds Sensors

  More +
• ISSN:
  0018-9456
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; Michigan ; OSHA Region 5 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  69
• Issue:
  5
• NIOSHTIC Number:
  nn:20059331
• Citation:
  IEEE Trans Instrum Meas 2020 May; 69(5):1972-1980
• Contact Point Address:
  Heyu Yin, Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824 USA
• Email:
  yinheyu@msu.edu
• CAS Registry Number:
  Potassium ferricyanide (CAS RN 13746-66-2)
• Federal Fiscal Year:
  2020
• Performing Organization:
  Michigan State University
• Peer Reviewed:
  True
• Start Date:
  20100901
• Source Full Name:
  IEEE Transactions on Instrumentation and Measurement
• End Date:
  20150831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b821a0c28f96648f301aaf9de9b203df2a6adf1d6561186b1fa185ffd54f81f762c352790f7638db1930eea4600f7c969d7db591e6d735ec15870aa023ee539e
• Download URL:
  https://stacks.cdc.gov/view/cdc/223596/cdc_223596_DS1.pdf
• File Type:
  [PDF - 3.26 MB ]