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Proceedings Paper

A high SNR readout circuit design for TDI array with adaptive charge capacity control
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Paper Abstract

In this paper, a novel high SNR readout circuit for a satellite TDI array is presented. Since an input range of an IR image for environmental satellites is broad and especially the cloud top temperature (CTT) that is important in understanding phenomena of atmosphere is quite low, the readout of low temperature signal is important in satellite applications. However, the noise resulted from a readout circuit is no longer ignorable compared to a detector shot noise at low IR radiation. Hence, an adaptive charge capacity control method is proposed in this paper for an improved SNR at low temperature. It is found that SNR is improved as much as 11dB at 200K and 90% background-limited infrared photodetection (BLIP) condition is satisfied over a total input range by simulation.

Paper Details

Date Published: 14 May 2007
PDF: 8 pages
Proc. SPIE 6542, Infrared Technology and Applications XXXIII, 65423U (14 May 2007); doi: 10.1117/12.719143
Show Author Affiliations
Chul Bum Kim, Korea Advanced Institute of Science and Technology (South Korea)
Chi Ho Hwang, Korea Advanced Institute of Science and Technology (South Korea)
Yong Soo Lee, Korea Advanced Institute of Science and Technology (South Korea)
Hee Chul Lee, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6542:
Infrared Technology and Applications XXXIII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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