NDLI: A high speed 1000 fps CMOS image sensor with low noise global shutter pixels

Content Provider	Springer Nature Link
Author	Zhou, YangFan Cao, ZhongXiang Qin, Qi Li, QuanLiang Shi, Cong Wu, NanJian
Copyright Year	2013
Abstract	A low read noise 8T global shutter pixel for high speed CMOS image sensor is proposed in this paper. The pixel has a pixel level sample-and-hold circuit and an in-pixel amplifier whose gain is larger than one. Using pixel level sample-and-hold circuit, the KTC noise on FD node can be effectively cancelled by correlated double sampling operation. The in-pixel amplifier with a gain larger than one is employed for reducing the pixel level sample-and-hold capacitors thermal noise and their geometric size. A high speed 1000 fps 256 × 256 CMOS image sensor based on the pixel is implemented in 0.18 μm CMOS process. The chip active area is 5 mm × 7 mm with a pixel size of 14 μm × 14 μm. The developed sensor achieves a read noise level as low as 14.8e- while attaining a high fill factor of 40%. The full well capacity can contain 30840e- and the resulting signal dynamic range is 66 dB.
Starting Page	1
Ending Page	8
Page Count	8
File Format	PDF
ISSN	1674733X
Journal	Science in China Series : Information Sciences
Volume Number	57
Issue Number	4
e-ISSN	18691919
Language	English
Publisher	Science China Press
Publisher Date	2013-05-16
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	global shutter CDS low noise fill factor high speed image sensor Information Systems and Communication Service
Content Type	Text
Resource Type	Article
Subject	Computer Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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