An APS-H-Size 250Mpixel CMOS Image Sensor Using Column Single-Slope ADCs with Dual-Gain Amplifiers

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Other Title
  • デュアルゲインアンプ型シングルスロープ列ADCを用いたAPS-Hサイズ2.5億画素CMOSイメージセンサ(固体撮像技術および一般)
  • デュアルゲインアンプ型シングルスロープ列ADCを用いたAPS-Hサイズ2.5億画素CMOSイメージセンサ
  • デュアルゲインアンプガタ シングルスロープレツ ADC オ モチイタ APS-Hサイズ 2.5オクカクソ CMOS イメージセンサ

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Description

We have developed an APS-H-sized 250Mpixel CMOS image sensor implemented with Single Slope ADC with dual gain amplifier (SSDG-ADC) to shorten the AD conversion period and widen the dynamic range without a rise in power consumption. In the SSDG-ADC, the gain of the column amplifier is set to high gain when a pixel signal level is lower than a certain threshold level. The gain is set down to low gain when the pixel level is higher. As a result, the 250Mpixel sensor with SSDG-ADC performs in about 75% shorter AD conversion period and 6dB wider dynamic range than a Single Slope ADC (SS-ADC).

Journal

  • ITE Technical Report

    ITE Technical Report 40.12 (0), 29-32, 2016

    The Institute of Image Information and Television Engineers

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