Offsetfree Column Buffer For Cmos Image Sensor

• doi: 10.1109/EDSSC.2019.8754056
• title: Offset-free Column Buffer for CMOS image sensor
• publisher: IEEE
• isbn: 978-1-7281-0287-0
• issn:
• rank: 3164
• access_type: LOCKED
• content_type: Conferences
• abstract: A new column buffer circuit with improved offset mismatch and charge sharing for CMOS image sensor is proposed in this paper. Based on the bottom plate sampling and fixed common level method, this novel design can avoid the offset non-uniformity of the two buffers. Also, it can restrain the charge sharing caused by the varied operating point by using a single buffer and switched capacitor technique. The proposed techniques are experimentally verified in a 1024 × 1024 prototype chip using 55nm low power CMOS process. The simulation results show that the linear range is extended by 20%, and the improved photo response non-uniformity is up to 1.16%.
• article_number: 8754056
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8754056
• html_url: https://ieeexplore.ieee.org/document/8754056/
• abstract_url: https://ieeexplore.ieee.org/document/8754056/
• publication_title: 2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)
• conference_location: Xi'an, China
• conference_dates: 12-14 June 2019
• publication_number: 8746071
• is_number: 8753821
• publication_year: 2019
• publication_date: 12-14 June 2019
• start_page: 1
• end_page: 2
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 209
• insert_date: 20190708
• index_terms:
  • author_terms:
    • CMOS image sensor
    • column readout
    • buffer
    • offset mismatch
    • charge sharing
  • dynamic_index_terms:
    • Image Sensor
    • Column In Buffer
    • Linear Range
    • High Gain
    • Low Noise
    • Light Levels
    • Capacitor C1
    • Readout Circuit
    • Temporal Noise
    • Readout Noise
    • Capacitors C2
• isbn_formats:
  • format: Print on Demand(PoD) ISBN, value: 978-1-7281-0287-0, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-7281-0286-3, isbnType: New-2005
• authors:
  • Author Name: Zhongjie Guo
    Affiliation: School of automation and information engineering, Xi’an University of Technology, Xi’an, China
    Author URL: https://ieeexplore.ieee.org/author/37086477116
    ID: 37086477116
    Order: 1
    Author Affiliations:
    • School of automation and information engineering, Xi’an University of Technology, Xi’an, China
  • Author Name: Qian Zhang
    Affiliation: Department of computer teaching and research, Xi’an Conservatory of Music, Xi’an, China
    Author URL: https://ieeexplore.ieee.org/author/37089919888
    ID: 37089919888
    Order: 2
    Author Affiliations:
    • Department of computer teaching and research, Xi’an Conservatory of Music, Xi’an, China
  • Author Name: Kai Jing
    Affiliation: School of automation and information engineering, Xi’an University of Technology, Xi’an, China
    Author URL: https://ieeexplore.ieee.org/author/37086886688
    ID: 37086886688
    Order: 3
    Author Affiliations:
    • School of automation and information engineering, Xi’an University of Technology, Xi’an, China

Image Sensor

• sensor_type: CMOS
• resolution: 1024x1024
• dynamic_range: 30 dB
• pixel_size: 55 nm
• dark_current: unknown

Optical Data

• focal_length: unknown
• aperture: unknown
• field_of_view: unknown
• distortion: unknown

Performance Metrics

• frame_rate: unknown
• signal_to_noise_ratio: unknown
• sensitivity: unknown
• shutter_speed: unknown
• power_consumption: unknown
• noise: 40% reduction in readout noise

Applications & Benefits

• cell_imaging: Capable of cell imaging due to low noise design.
• benefits: Improved photo response non-uniformity, extended linear range by 20%, reduced readout noise.

Supporting Organizations

• supported_by: Xi’an University of Technology, Xi'an Conservatory of Music

Manuscript Details

• publication_date: 12-14 June 2019

Relevancy Score

• score: 10
• missing_fields:
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed
  • power_consumption

Processed JSON Filename

request_17d52e7b-50b8-422e-9d3a-e7f0fc068d39-offsetfree_column_buffer_for_cmos_image_sensor.json