Readout Techniques for Drift and Low Frequency Noise Rejection in Infrared Arrays

Three different methods are presented to subtract thermal drifts and low-frequency noise from the signal of infrared array. The first is dead pixels with open Indium bumps, the second is reference output as implemented on the Hawaii2 multiplexer, and the third is dark pixels to emulate reference cel...

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Bibliographic Details
Published inScientific Detectors for Astronomy pp. 435 - 444
Main Authors Finger, Gert, Dorn, Reinhold J., Hoffman, Alan W., Mehrgan, Hamid, Meyer, Manfred, Moorwood, Alan F.M., Stegmeier, Joerg
Format Book Chapter
LanguageEnglish
Published Dordrecht Springer Netherlands 2004
SeriesAstrophysics and Space Science Library
Subjects
HgCdTe
infrared detector
InSb
noise
readout techniques
reference cell
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Summary:Three different methods are presented to subtract thermal drifts and low-frequency noise from the signal of infrared array. The first is dead pixels with open Indium bumps, the second is reference output as implemented on the Hawaii2 multiplexer, and the third is dark pixels to emulate reference cells having a capacity connected to the gate of the unit cell field-effect transistor (FET). The third method is the most effective and yields a reduction in readout noise from 15.4-9.4 erms. A novel method will be described to extend this readout technique to the Aladdin 1K×1K InSb array.
Bibliography:European Southern Observatory
Raytheon Infrared Operations
ISBN:9781402017889
140201788X
DOI:10.1007/1-4020-2527-0_56