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

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

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002exa....14..117f&link_type=abstract

Experimental Astronomy, v. 14, Issue 2, p. 117-127 (2002).

Astronomy and Astrophysics

Astronomy

Hgcdte, Infrared Detector, Insb, Noise, Readout Techniques, Reference Cell

Scientific paper

Three different methods are presentedto subtract thermal drifts and low-frequency noise from thesignal of infrared array. The first is dead pixels with openIndium bumps, the second is reference output as implemented onthe Hawaii2 multiplexer, and the third is dark pixels to emulatereference cells having a capacity connected to the gate of theunit cell field-effect transistor (FET). The third method is themost effective and yields a reduction in readout noise from15.4 9.4 erms. A novel method will be described to extend this readouttechnique to the Aladdin 1 K × 1 K InSb array.

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