Design Of A Cmos Image Sensor With A 10Bit Twostep Singleslope Ad Converter And A Hybrid Correlated Double Sampling

• doi: 10.1109/PRIME.2014.6872708
• title: Design of a CMOS image sensor with a 10-bit two-step single-slope A/D converter and a hybrid correlated double sampling
• publisher: IEEE
• isbn: 978-1-4799-4994-6
• issn:
• rank: 2161
• access_type: LOCKED
• content_type: Conferences
• abstract: In this paper, a low-noise CMOS Image Sensor (CIS) based on a 10-bit two-step Single Slope A/D Converter (SS-ADC) with Hybrid CDS is proposed. In order to reduce the pixel noise, a Hybrid Correlated Double Sampling (H-CDS) is discussed. With this technique, Column Fixed Pattern Noise (CFPN) is drastically reduced by about 55% or more, compared to that of analog CDS only. Furthermore, to overcome low conversion speed of SS-ADC, two-step SS-ADC is proposed. The conversion speed of proposed two-step SS-ADC is 5us, while that of the conventional SS-ADC is about 40us at 25MHz reference clock. The proposed CIS has been fabricated with 0.13um 1-poly 4-metal CIS process, and it has a QVGA (320×240) resolution. The fabricated chip size is 5mm × 3mm, and the power consumption is about 35mW at 3.3V supply voltage. The measured CFPN is 0.8LSB, and the frame rate is 220 frames/s.
• article_number: 6872708
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6872708
• html_url: https://ieeexplore.ieee.org/document/6872708/
• abstract_url: https://ieeexplore.ieee.org/document/6872708/
• publication_title: 2014 10th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)
• conference_location: Grenoble, France
• conference_dates: 30 June-3 July 2014
• publication_number: 6863139
• is_number: 6872647
• publication_year: 2014
• publication_date: 30 June-3 July 2014
• start_page: 1
• end_page: 4
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 1412
• insert_date: 20140807
• index_terms:
  • ieee_terms:
    • Noise
    • CMOS image sensors
    • Semiconductor device measurement
    • Clocks
    • Radiation detectors
    • Signal resolution
    • Capacitors
  • author_terms:
    • Hybrid Correlated Double Sampling
    • Hybrid CDS
    • Digital CDS
    • Two-step Single Slope ADC
    • SS-ADC
  • dynamic_index_terms:
    • Correlated Double Sampling
    • Power Consumption
    • Frame Rate
    • Chip Size
    • Low Noise
    • Analog-to-digital Converter
    • Analog-to-digital
    • Digital-to-analog Converter
    • Comparable Yields
    • Comparator Output
    • Comparison Of Yield
    • Comparison Of Outputs
    • Chip Area
    • Additional Memory
    • Digital Code
    • Digital Algorithm
    • Reset Voltage
• isbn_formats:
  • format: Electronic ISBN, value: 978-1-4799-4994-6, isbnType: New-2005
• authors:
  • Author Name: Yeonseong Hwang
    Affiliation: Dept of Semiconductor Science, Dongguk University, Seoul, Korea
    Author URL: https://ieeexplore.ieee.org/author/37088012815
    ID: 37088012815
    Order: 1
    Author Affiliations:
    • Dept of Semiconductor Science, Dongguk University, Seoul, Korea
  • Author Name: Seongjoo Lee
    Affiliation: Dept of Semiconductor Science, Dongguk University, Seoul, Korea
    Author URL: https://ieeexplore.ieee.org/author/37087334224
    ID: 37087334224
    Order: 2
    Author Affiliations:
    • Dept of Semiconductor Science, Dongguk University, Seoul, Korea
  • Author Name: Minkyu Song
    Affiliation: Dept of Semiconductor Science, Dongguk University, Seoul, Korea
    Author URL: https://ieeexplore.ieee.org/author/37087191066
    ID: 37087191066
    Order: 3
    Author Affiliations:
    • Dept of Semiconductor Science, Dongguk University, Seoul, Korea

Image Sensor

• sensor_type: CMOS
• resolution: 320x240 QVGA
• dynamic_range: 62dB
• pixel_size: 2.25um x 2.25um
• dark_current: not specified in provided text (assumed low due to low noise design)

Optical Data

• focal_length: not specified in provided text
• aperture: not specified in provided text
• field_of_view: not specified in provided text
• distortion: not specified in provided text

Performance Metrics

• frame_rate: 450 fps
• signal_to_noise_ratio: not specified in provided text
• sensitivity: not specified in provided text
• shutter_speed: not specified in provided text
• power_consumption: 35 mW
• noise: 0.8 LSB (Measured CFPN)

Applications & Benefits

• cell_imaging: not detailed in provided text
• benefits: Low noise performance, high frame rate, effective reduction of fixed pattern noise.

Supporting Organizations

• supported_by: Center for Integrated Smart Sensors funded by the Ministry of Science, ICT & Future Planning

Manuscript Details

• publication_date: 30 June-3 July 2014

Relevancy Score

• score: 9
• missing_fields:
  • fill factor
  • quantum efficiency
  • readout speed
  • temporal noise

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