DocumentCode
2870827
Title
A Per-Pixel Pulse-FM Background Subtraction Circuit with 175ppm Accuracy for Imaging Applications
Author
Kavusi, S. ; Ghosh, Koushik ; El Gamal, Abbas
Author_Institution
Stanford Univ., CA
fYear
2007
fDate
11-15 Feb. 2007
Firstpage
504
Lastpage
618
Abstract
A per-pixel background subtraction circuit for infrared and fluorescence imaging applications is presented. Charge packets controlled by a pulse-FM signal are subtracted from the integrator of each pixel. A 1times16 array of 30mum pixels prototyped in a 0.18mum CMOS process achieves noise, linearity, and spatial current variation of 175ppm, 270ppm, and 3%, respectively, at 43fps
Keywords
CMOS integrated circuits; fluorescence; infrared imaging; pulse frequency modulation; 0.18 micron; CMOS process; charge packets; fluorescence imaging; infrared imaging; per-pixel background subtraction circuit; pulse-FM background subtraction circuit; pulse-FM signal; Background noise; Capacitors; Circuit noise; Image sensors; Linearity; Optical imaging; Photoconductivity; Pulse amplifiers; Pulse circuits; Pulsed power supplies;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location
San Francisco, CA
ISSN
0193-6530
Print_ISBN
1-4244-0853-9
Electronic_ISBN
0193-6530
Type
conf
DOI
10.1109/ISSCC.2007.373515
Filename
4242486
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