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Proceedings Paper

Characterization of SBRC 190: a multigain cryogenic readout multiplexer for IR detector arrays
Author(s): Jam Farhoomand; David Sisson; Lunming Yuen; Dzung T. Hoang
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Paper Abstract

SBRC-190 readout multiplexer is a 1×32, multi-gain, capacitive transimpedance amplifier (CTIA) especially suitable for use with infrared detector arrays requiring low-bias levels--such as Ge:Ga far infrared detector arrays. The unit-cell design employs a feedback loop which keeps the bias across the detector constant and, therefore, prevents debiasing--a critical requirement for far infrared detectors. We have tested a number of these multiplexers at various cryogenic temperatures, down to 1.7K. In this presentation we will report the results of our tests and will discuss gain, uniformity, and read noise of the bare mux under correlated-double sampling at 4.2K.

Paper Details

Date Published: 3 March 2003
PDF: 11 pages
Proc. SPIE 4857, Airborne Telescope Systems II, (3 March 2003); doi: 10.1117/12.458589
Show Author Affiliations
Jam Farhoomand, TechnoScience Corp. and NASA Ames Research Ctr. (United States)
David Sisson, TechnoScience Corp. and NASA Ames Research Ctr. (United States)
Lunming Yuen, TechnoScience Corp. and NASA Ames Research Ctr. (United States)
Dzung T. Hoang, TechnoScience Corp. and NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 4857:
Airborne Telescope Systems II
Ramsey K. Melugin; Hans-Peter Roeser, Editor(s)

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