CUSTOM DESIGN

イメージセンサ

超高感度&広ダイナミックレンジイメージセンサ

  • 開発元:カメラモジュールメーカー、研究機関
  • 用途:監視カメラ向け

パブリック公開されている実績の一部のみを紹介しています。

参考文献

A Low-Noise High-Dynamic-Range 17-b 1.3-Megapixel 30-fps CMOS Image Sensor With Column-Parallel Two-Stage Folding-Integration/Cyclic ADC

Published in: IEEE Transactions on Electron Devices ( Volume: 59 , Issue: 12 , Dec. 2012 )

Abstract:
A 1.3-megapixel CMOS image sensor (CIS) with digital correlated double sampling and 17-b column-parallel two-stage folding-integration/cyclic analog-to-digital converters (ADCs) is developed. The image sensor has 0.021-e rms – vertical fixed pattern noise, 1.2-e rms – pixel temporal noise, and 85.0-dB dynamic range using 32 samplings in the folding-integration ADC mode. Despite the large number of samplings (32 times), the prototype image sensor is demonstrated at the video rate operation of 30 Hz by the new architecture of the proposed ADCs and the high-performance peripheral logic (or digital) parts using low-voltage differential signaling circuit. The developed 17-b CIS has no visible quantization noise at very low light level of 0.01 lx because of high grayscale resolution where 1LSB = 0.1 – . The implemented CIS using 0.18- μm technology has the sensitivity of 20 V/lx ·s and the pixel conversion gain of 82 μV/e – .