A CMOS Image Sensor with noiseless Column-parallel ADC.

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  • Sugiki Tadashi
    TOSHIBA CORPORATION DIGITAL MEDIA NETWORK COMPANY PERSONAL AND MULTIMEDIA SYSTEMS DEVELOPMENT CENTER
  • Ohsawa Shinji
    TOSHIBA CORPORATION SEMICONDUCTOR COMPANY SYSTEM LSI DIV.PC&DIGITAL CONSUMER SYSTEM LSI DEPT.
  • Miura Hiroki
    TOSHIBA CORPORATION SEMICONDUCTOR COMPANY SYSTEM LSI DIV.PC&DIGITAL CONSUMER SYSTEM LSI DEPT.
  • Tomizawa Yoshiyuki
    TOSHIBA DIGITAL MEDIA ENGINEERING CORPORATION
  • Hoshino Makoto
    TOSHIBA DIGITAL MEDIA ENGINEERING CORPORATION
  • Arakawa Tsuyoshi
    TOSHIBA DIGITAL MEDIA ENGINEERING CORPORATION

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Other Title
  • コラム間FPNのないコラム型AD変換器を搭載したCMOSイメージセンサ
  • コラム カン FPN ノ ナイ コラムガタ AD ヘンカンキ オ トウサイ シタ CMOS イメージセンサ

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Description

We have developed a 1/4" 10bit digital output VGA CMOS image sensor with a column-parallel ADC architecture. It operates with single 3.3V power supply and has 60mW power consumption at 30frame/s. A column-to-column fixed pattern noise in the column-parallel ADC architecture is reduced by the comparator structure of the double inverting amplifier with double clamp circuits. By using the comparator clamp circuit as a part of the correlated double sampling circuit, no linear amplifiers in the column signal path are required, and so amplifier noise is reduced. The total image sensor signal to noise ratio 57dB is obtained.

Journal

  • ITE Technical Report

    ITE Technical Report 24.37 (0), 79-84, 2000

    The Institute of Image Information and Television Engineers

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