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Proceedings Paper

An ultra wide dynamic range CMOS image sensor with a linear response
Author(s): Jong Ho Park; Mitsuhito Mase; Shoji Kawahito; Masaaki Sasaki; Yasuo Wakamori; Yukihiro Ohta
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Paper Abstract

An ultra wide dynamic range (WDR) CMOS image sensor (CIS) and the details of evaluation are presented. The proposed signal readout technique of extremely short accumulation (ESA) enables the dynamic range of image sensor to be expanded up to 146dB. Including the ESA signals, total of 4 different accumulation time signals are read out in one frame period based on burst readout technique. To achieve the high-speed signal readout required for the multiple exposure signals, column parallel A/D converters are integrated at the upper and lower sides of pixel arrays. The improved 12-bits cyclic ADCs with a built-in correlated double sampling (CDS) circuit has the differential non-linearity (DNL) of ±0.3LSB.

Paper Details

Date Published: 6 February 2006
PDF: 8 pages
Proc. SPIE 6068, Sensors, Cameras, and Systems for Scientific/Industrial Applications VII, 60680B (6 February 2006); doi: 10.1117/12.642843
Show Author Affiliations
Jong Ho Park, Shizuoka Univ. (Japan)
Mitsuhito Mase, Shizuoka Univ. (Japan)
Shoji Kawahito, Shizuoka Univ. (Japan)
Masaaki Sasaki, Sendai National College of Technology (Japan)
Yasuo Wakamori, Yamaha Corp. (Japan)
Yukihiro Ohta, Hamamatsu Industrial Research Institute of Shzuoka Prefecture (Japan)


Published in SPIE Proceedings Vol. 6068:
Sensors, Cameras, and Systems for Scientific/Industrial Applications VII
Morley M. Blouke, Editor(s)

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