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Proceedings Paper

Noise bandwidth suppression circuit for low-noise IRFPA
Author(s): Byunghyuck Kim; Sang-Gu Kang; Hee Chul Lee; Choong-Ki Kim
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Paper Abstract

Noise property is a prime consideration in designing readout circuits for IR focal plane arrays. Output stage is frequently a dominant noise source in the readout circuit. From this pont of view, we suggest a new noise reduction circuit, which suppresses the noise bandwidth of the output stage. The Noise Bandwidth Suppression (NBS) circuit, which is a RC filter with bistable bandwidth, reduces dynamically the niose bandwidth with the same operation speed. From experimental results, it is found that the NBS circuit can successfully reduce the read noise. Using NBS and CDS, the output stage noise was down to 168μVrms at 300K. It is expected that the output stage noise will be reduced to about μVrms at the operation temperature of 77K and the designed readout circuit can satisfy 95% BLIP condition.

Paper Details

Date Published: 23 January 2003
PDF: 7 pages
Proc. SPIE 4820, Infrared Technology and Applications XXVIII, (23 January 2003); doi: 10.1117/12.451959
Show Author Affiliations
Byunghyuck Kim, Korea Advanced Institute of Science and Technology (South Korea)
Sang-Gu Kang, Korea Advanced Institute of Science and Technology (Japan)
Hee Chul Lee, Korea Advanced Institute of Science and Technology (South Korea)
Choong-Ki Kim, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 4820:
Infrared Technology and Applications XXVIII
Bjorn F. Andresen; Gabor F. Fulop; Marija Strojnik, Editor(s)

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