DocumentCode
985919
Title
A high dynamic range current-mode amplifier for computed tomography
Author
Steadman, Roger ; Vogtmeier, Gereon ; Kemna, Armin ; Quossai, Salah Eddine Ibnou ; Hosticka, Bedrich J.
Author_Institution
Philips Res. Lab., Aachen
Volume
41
Issue
7
fYear
2006
fDate
7/1/2006 12:00:00 AM
Firstpage
1615
Lastpage
1619
Abstract
In this paper, we show a high dynamic range current-mode detector for computed tomography application. A regulated current mirror structure has been implemented at pixel level that provides with 17 bits dynamic range and a noise floor below 3 pARMS. Nonlinearity is kept below 2% and signal bandwidth is higher than 10 kHz. A test structure with 4times4 pixel array is presented is this paper. Both photodiode and current mode amplifier have been integrated into the same CMOS standard process
Keywords
CMOS integrated circuits; computerised tomography; current mirrors; current-mode circuits; photodiodes; CMOS standard process; computed tomography; current mirror structure; current-mode amplifier; Bandwidth; Circuits; Computed tomography; Detectors; Dynamic range; Electrical capacitance tomography; Mirrors; Optical amplifiers; Photodiodes; X-ray imaging; CMOS; computed tomography; image sensor; monolithic integrated circuit; photodiodes; x-ray;
fLanguage
English
Journal_Title
Solid-State Circuits, IEEE Journal of
Publisher
ieee
ISSN
0018-9200
Type
jour
DOI
10.1109/JSSC.2006.873679
Filename
1644872
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