NDLI: High linearity current mode image sensor

Content Provider	IEEE Xplore Digital Library
Author	Xiaotie Wu Milin Zhang Van der Spiegel, J.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Systems Engineering (ESE), University of Pennsylvania, Philadelphia, 19104, USA (Xiaotie Wu; Milin Zhang; Van der Spiegel, J.)
Abstract	Current mode image sensors enable an easy implementation of focal plane algebraic functions, but suffer from poor linearity performance. A theoretical analysis is first performed on the source of the non-linearity for current mode image sensors. According to the analysis, an architecture of a current mode image sensor with a voltage feedback loop between pixel output and the current conveyor for linearity enhancement is proposed. An image sensor array of 100 × 200 current mode pixels is fabricated in 0.5um 2P3M standard CMOS processing technology. Experimental results illustrate a 45% improvement of the linearity of the proposed imager. Fixed pattern noise is reduced by 19% at the saturation level and signal to noise ratio of 49.6dB is achieved.
Starting Page	1
Ending Page	4
File Size	623326
Page Count	4
File Format	PDF
ISBN	9781467356947
e-ISBN	9781467356961
DOI	10.1109/EDSSC.2012.6482792
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-03
Publisher Place	Thailand
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Linearity Transistors Image sensors Resistance Noise Feedback loop Arrays
Content Type	Text
Resource Type	Article

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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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