Maximal 13Bit Variable Resolution And Reducing Clipped Noise Flash Adc

• doi: 10.1109/SCET.2012.6342136
• title: Maximal 13Bit Variable Resolution and Reducing Clipped Noise Flash ADC
• publisher: IEEE
• isbn: 978-1-4577-1963-9
• issn:
• partnum: 12EX5867
• rank: 2977
• access_type: LOCKED
• content_type: Conferences
• abstract: An objective of this paper is to present the development progress of a high performance CMOS imager with one new analog to digital converter (ADC) scheme of maximal 13bit variable resolution and reducing the clipped noise. The response probability of human's eyes from dark to light is normal distribution in the region of [-1+σ, 1-σ]. In the interested region of human's eyes [-1+σ, 1-σ] there is a maximal 13bit resolution to improve the image quality and to save the power consumption and the chip size. The development being discussed uses an adjustable reference at both top and bottom of the non-uniformity series resistor of the variable resolution ADC to reduce the clipped noise and to provide the wide dynamic range benefits on CMOS imager chip. Based on reports coming out of industry and universities similar developments, this papers concerns about obtaining the high performance without increasing the circuit size and the chip power consumption. One UXGA CMOS sensor with the proposed ADC scheme is fabricated with 0.18um CMOS process. The test results show the improved image quality compared with the typical CMOS product with linear ADC. Test results show 79dB SNR (@Gain=0dB) with the power consumption of 90mW@54MHz.
• article_number: 6342136
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6342136
• html_url: https://ieeexplore.ieee.org/document/6342136/
• abstract_url: https://ieeexplore.ieee.org/document/6342136/
• publication_title: 2012 Spring Congress on Engineering and Technology
• conference_location: Xi'an, China
• conference_dates: 27-30 May 2012
• publication_number: 6340510
• is_number: 6341887
• publication_year: 2012
• publication_date: 27-30 May 2012
• start_page: 1
• end_page: 4
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 167
• insert_date: 20121110
• index_terms:
  • ieee_terms:
    • Image resolution
    • CMOS integrated circuits
    • Signal resolution
    • Noise
    • Resistors
    • CMOS image sensors
    • Power demand
  • dynamic_index_terms:
    • Maximum Resolution
    • Clipping Noise
    • Power Consumption
    • Human Eye
    • Analog-to-digital Converter
    • Analog-to-digital
    • Digital-to-analog Converter
    • Series Resistance
    • Improve Image Quality
    • Eye Region
    • Chip Size
    • Input Signal
    • Signal Amplitude
    • Current Source
    • Current Regulations
    • High Signal-to-noise Ratio
    • Analog Signal
    • Parallel Signaling
    • Binary Code
    • Variable Resistor
• isbn_formats:
  • format: CD, value: 978-1-4577-1963-9, isbnType: New-2005
  • format: Print ISBN, value: 978-1-4577-1965-3, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4577-1964-6, isbnType: New-2005
• authors:
  • Author Name: Xiangliang Jin
    Affiliation: Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan, China
    Author URL: https://ieeexplore.ieee.org/author/37086130160
    ID: 37086130160
    Order: 1
    Author Affiliations:
    • Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan, China

Image Sensor

• sensor_type: CMOS
• resolution: UXGA (1600x1200)
• dynamic_range: 79 dB
• pixel_size: Not explicitly stated
• dark_current: Not explicitly stated

Optical Data

• focal_length: Not explicitly stated
• aperture: Not explicitly stated
• field_of_view: Not explicitly stated
• distortion: Not explicitly stated

Performance Metrics

• frame_rate: 54 MHz
• signal_to_noise_ratio: 79 dB
• sensitivity: Not explicitly stated
• shutter_speed: Not explicitly stated
• power_consumption: 90 mW
• noise: Not explicitly stated

Applications & Benefits

• cell_imaging: Used in a variety of applications including mobile devices and other imaging needs.
• benefits: Improved image quality and reduced clipped noise with variable resolution ADC.

Supporting Organizations

• supported_by: Hunan Provincial Natural Science Foundation, Scientific Research Fund of Hunan Provincial Education Department, National Science and Technology Major Project of the Ministry of Science and Technology of China

Manuscript Details

• publication_date: 27-30 May 2012

Relevancy Score

• score: 9
• missing_fields:
  • pixel_size
  • dark_current
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • sensitivity
  • shutter_speed
  • noise

Processed JSON Filename

request_402b6bde-fb14-46bf-af46-4a9e62edacbb-maximal_13bit_variable_resolution_and_reducing_clipped_noise_flash_adc.json