Referenced Items are not available for this document.
In this paper, we describe a novel CMOS X-ray active pixel sensor for indirect C.T. X-ray detection. Considerable noise reduction has been achieved by lowering the detector junction capacitance. For this purpose a new low capacitance, low dark current dot type photodiode based on minority diffusion has been developed. The dynamic range is expanded to 17 bit by the use of individual in-pixel automatic gain control. A photon noise limited detector exhibiting a 20 × 10 pixel array with a frame rate of 3000 frames/sec has been realized in a 1.2 μm CMOS process.
Published in:
Sensors, 2003. Proceedings of IEEE
(Volume:2
)
Date of Conference: 22-24 Oct. 2003
- Page(s):
- 1260 - 1265 Vol.2
- Print ISBN:
- 0-7803-8133-5
- INSPEC Accession Number:
- 7884728
- Digital Object Identifier :
- 10.1109/ICSENS.2003.1279147
- Product Type:
- Conference Publications
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