Bidirectional Current Conveyer With Chopper Stabilization And Dynamic Element Matching

• doi: 10.1109/ISCAS.2012.6271416
• title: Bidirectional current conveyer with chopper stabilization and dynamic element matching
• publisher: IEEE
• isbn: 978-1-4673-0217-3
• issn: 0271-4302
• partnum: 12CH38929
• rank: 1717
• access_type: LOCKED
• content_type: Conferences
• abstract: A compact and accurate current conveyer for interfacing with a three-electrode electrochemical sensor is presented. It employs chopper stabilization to reduce transistor sizes for a given flicker noise. A current-copying circuit generates a mirror image of the sensor current for bidirectional conveying. It employs dynamic element matching to remove the mismatch in the current mirrors. The current conveyer prototyped in 0.13µm CMOS consumes 4µW from a 1.2V supply. It achieves an input-referred noise of 0.13pArms over a 1kHz bandwidth with a dynamic range of 8.6pA to 350nA. The prototype has been validated in DNA catalytic reporter detection.
• article_number: 6271416
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6271416
• html_url: https://ieeexplore.ieee.org/document/6271416/
• abstract_url: https://ieeexplore.ieee.org/document/6271416/
• publication_title: 2012 IEEE International Symposium on Circuits and Systems (ISCAS)
• conference_location: Seoul, Korea (South)
• conference_dates: 20-23 May 2012
• publication_number: 6257548
• is_number: 6270389
• publication_year: 2012
• publication_date: 20-23 May 2012
• start_page: 1079
• end_page: 1082
• citing_paper_count: 3
• citing_patent_count: 1
• download_count: 672
• insert_date: 20120820
• index_terms:
  • ieee_terms:
    • Noise
    • Electrodes
    • Transistors
    • Mirrors
    • Choppers (circuits)
    • CMOS integrated circuits
    • Sensors
  • dynamic_index_terms:
    • Dynamic Matching
    • Bidirectional Current
    • Dynamic Element Matching
    • Chopper Stabilization
    • Transistor Size
    • Transistor Count
    • Flicker Noise
    • Current Mirror
    • Input-referred Noise
    • Impedance
    • Resistivity
    • Counter Electrode
    • Auxiliary Electrode
    • Cyclic Voltammetry
    • Current Source
    • Current Regulations
    • Thermal Noise
    • Current Noise
    • Electrochemical Cell
    • Battery Cells
    • Working Electrode
    • Potassium Ferricyanide
    • Potassium Hexacyanoferrate
    • Cyclic Voltammetry Curves
    • Input Current
    • Transimpedance Amplifier
    • Switching Noise
• isbn_formats:
  • format: CD, value: 978-1-4673-0217-3, isbnType: New-2005
  • format: Print ISBN, value: 978-1-4673-0218-0, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4673-0219-7, isbnType: New-2005
• authors:
  • Author Name: Hamed Mazhab Jafari
    Affiliation: Department of Electrical and Computer Engineering, University of Toronto, Canada
    Author URL: https://ieeexplore.ieee.org/author/38504011600
    ID: 38504011600
    Order: 1
    Author Affiliations:
    • Department of Electrical and Computer Engineering, University of Toronto, Canada
  • Author Name: Roman Genov
    Affiliation: Department of Electrical and Computer Engineering, University of Toronto, Canada
    Author URL: https://ieeexplore.ieee.org/author/37270856200
    ID: 37270856200
    Order: 2
    Author Affiliations:
    • Department of Electrical and Computer Engineering, University of Toronto, Canada

Image Sensor

• sensor_type: CMOS
• resolution: Not specified
• dynamic_range: Not specified
• pixel_size: Not specified
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• power_consumption: 4 µW
• noise: 0.13 pA

Applications & Benefits

• cell_imaging: Electrochemical record system consisting of a three-electrode regulation loop and an on-chip dual-slope ADC for digitizing output.
• benefits: High sensitivity and low noise enable effective detection of small currents in electrochemical sensing applications.

Supporting Organizations

• supported_by: University of Toronto

Manuscript Details

• publication_date: 20-23 May 2012

Relevancy Score

• score: 3
• missing_fields:
  • resolution
  • dynamic_range
  • pixel_size
  • dark_current
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed

Processed JSON Filename

request_0df94507-9d9c-40f6-89b5-e9a6f320c007-bidirectional_current_conveyer_with_chopper_stabilization_and_dynamic_element_matching.json