DocumentCode
829713
Title
A new readout circuit for an ultrahigh sensitivity CMOS image sensor
Author
Watabe, Toshihisa ; Goto, Masahide ; Ohtake, Hiroshi ; Maruyama, Hirotaka ; Tanioka, Kenkichi
Author_Institution
NHK Sci. & Tech. Res. Labs., Tokyo, Japan
Volume
48
Issue
3
fYear
2002
fDate
8/1/2002 12:00:00 AM
Firstpage
394
Lastpage
399
Abstract
We have developed a new readout circuit for highly sensitive CMOS image sensors. The circuit makes it possible to obtain a high signal-to-noise ratio by effectively transferring signal charges accumulated in the photodiode to a small capacitance. We fabricated and tested a CMOS image sensor with the readout circuit, and confirmed that it has higher sensitivity than conventional passive-pixel CMOS image sensors.
Keywords
CMOS image sensors; capacitance; high SNR; high signal-to-noise ratio; passive-pixel CMOS image sensors; photodiode; readout circuit; ultrahigh sensitivity CMOS image sensor; CMOS image sensors; Circuit testing; FETs; Image sensors; Parasitic capacitance; Photodiodes; Pixel; Signal to noise ratio; Solid state circuits; Voltage;
fLanguage
English
Journal_Title
Consumer Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0098-3063
Type
jour
DOI
10.1109/TCE.2002.1037020
Filename
1037020
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