Offset calibration current readout for LWIR photodiode FPA

Details Offset calibration current readout for LWIR photodiode FPA Offset calibration current readout for LWIR photodiode FPA

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2745...78k&link_type=abstract

Proc. SPIE Vol. 2745, p. 78-88, Infrared Readout Electronics III, Eric R. Fossum; Ed.

Physics

Scientific paper

A circuit for readout of LWIR photodiode in area FPA is suggested and simulated. It is expected, that the combination of a dynamic current mirror and the buffered direct injection input (DCM-BDI) will be capable of a hundred-fold dark current and background current suppression, and perfect, within a few millivolt over FPA, detector biasing. The estimates are made of which improvement in detectivity the novel readout scheme can bring. To realize fully the benefits of the DCM-BDI readout, the buffer amplifier 1/f-noise should be made as small as 100 nV/Hz(superscript 1/2) at 1 Hz.

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