Indirectfeedback Sigmadelta Cmos Image Sensors With Sarbased Startup

• doi: 10.1109/eStream.2015.7119491
• title: Indirect-feedback Sigma-Delta CMOS image sensors with SAR-based startup
• publisher: IEEE
• isbn: 978-1-4673-7445-3
• issn:
• rank: 2777
• access_type: LOCKED
• content_type: Conferences
• abstract: A novel type of CMOS image sensor (CIS) leveraging two types of analog-to-digital converters (ADCs) is presented in this work. Contrary to conventional ΣΔ image sensors, which implement ΣΔ ADCs at the column or pixel array level, this work utilizes the pixel structure as part of the ΣΔ modulator to enhance the noise shaping capabilities of the readout scheme. The overall speed performance of this indirectfeedback (IF) ΣΔ image sensor is enhanced with the addition of a Successive Approximation Register (SAR) startup. The SAR startup has been successfully demonstrated on two prototype image sensors developed in a generic 0.35μm digital CMOS process. For the column-level, 320x180 pixel implementation, the SAR startup is included with minimal additional overhead, 1.8% of original ΣΔ column readout circuitry.
• article_number: 7119491
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7119491
• html_url: https://ieeexplore.ieee.org/document/7119491/
• abstract_url: https://ieeexplore.ieee.org/document/7119491/
• publication_title: 2015 Open Conference of Electrical, Electronic and Information Sciences (eStream)
• conference_location: Vilnius, Lithuania
• conference_dates: 21-21 April 2015
• publication_number: 7118013
• is_number: 7119473
• publication_year: 2015
• publication_date: 21-21 April 2015
• start_page: 1
• end_page: 5
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 291
• insert_date: 20150608
• index_terms:
  • ieee_terms:
    • Prototypes
    • Noise
    • CMOS image sensors
    • Arrays
    • Photodiodes
    • Sigma-delta modulation
  • author_terms:
    • CMOS image sensor
    • Indirect-feedback ΣΔ image sensor
    • high dynamic range
    • time-domain simulator
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Analog-to-digital Converter
    • Analog-to-digital
    • Digital-to-analog Converter
    • Pixel Array
    • Readout Scheme
    • Readout Strategy
    • Sampling Period
    • Frame Rate
    • Voltage Drop
    • Potential Drop
    • IR Drop
    • Least Significant Bit
    • Low Bit
    • CMOS Technology
    • Memory Unit
    • Quantization Levels
    • Start-up Phase
    • Video Frame Rate
• isbn_formats:
  • format: Electronic ISBN, value: 978-1-4673-7445-3, isbnType: New-2005
• authors:
  • Author Name: Zhe Gao
    Affiliation: University of Rochester, Rochester, NY
    Author URL: https://ieeexplore.ieee.org/author/37072553500
    ID: 37072553500
    Order: 1
    Author Affiliations:
    • University of Rochester, Rochester, NY
  • Author Name: John C. Liobe
    Affiliation: ADVIS, Inc., Rochester, NY
    Author URL: https://ieeexplore.ieee.org/author/37266665700
    ID: 37266665700
    Order: 2
    Author Affiliations:
    • ADVIS, Inc., Rochester, NY
  • Author Name: Mark Balon
    Affiliation: ADVIS, Inc., Rochester, NY
    Author URL: https://ieeexplore.ieee.org/author/37085338876
    ID: 37085338876
    Order: 3
    Author Affiliations:
    • ADVIS, Inc., Rochester, NY
  • Author Name: Zeljko Ignjatovic
    Affiliation: University of Rochester, Rochester, NY
    Author URL: https://ieeexplore.ieee.org/author/37270103900
    ID: 37270103900
    Order: 4
    Author Affiliations:
    • University of Rochester, Rochester, NY
  • Author Name: Mark Fiscella
    Affiliation: University of Rochester, Rochester, NY
    Author URL: https://ieeexplore.ieee.org/author/37085339238
    ID: 37085339238
    Order: 5
    Author Affiliations:
    • University of Rochester, Rochester, NY
  • Author Name: Mark F. Bocko
    Affiliation: University of Rochester, Rochester, NY
    Author URL: https://ieeexplore.ieee.org/author/37270106500
    ID: 37270106500
    Order: 6
    Author Affiliations:
    • University of Rochester, Rochester, NY

Image Sensor

• sensor_type: CMOS
• resolution: 320x180
• dynamic_range: Not specified
• pixel_size: 10µm
• dark_current: Not specified

Optical Data

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

Performance Metrics

• frame_rate: 32fps
• noise: 2 DNs

Applications & Benefits

• cell_imaging: Not specified
• benefits: The inclusion of the SAR conversion phase improves the readout speed and frame rate, enabling better image quality.

Supporting Organizations

• supported_by: University of Rochester, ADVIS, Inc.

Manuscript Details

• publication_date: 21-21 April 2015

Relevancy Score

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

Processed JSON Filename

request_6a3eb7f4-b8c5-4800-8250-34addb06e1ca-indirectfeedback_sigmadelta_cmos_image_sensors_with_sarbased_startup.json