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Proceedings Paper

R[sub]D[/sub]A Requirements For Optimum Hybrid Focal Plane Performance
Author(s): S. B. Grossman; R. B. Emmons; S. R. Hawkins
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Paper Abstract

In analyzing the performance of direct-injected hybrid focal plane arrays, many factors must be consiaered in determining the minimum detector resistance-area product RDA neces-sary to obtain background-limited performance (BLIP) and good array uniformity. In photo-aioue arrays, a necessary but not sufficient condition is that noise due to the diode generation-recombination and diffusion currents are less than the background photon shot noise. Tnis places a minimum requirement on the magnitude of RoA, the zero bias resistance area product. In addition, there are generally much more stringent requirements on RDA uue to input MOSFET l/f noise and threshold variations which exceed the single detector RoA requirement for BLIP operation at a given background. In general, the input thresnolu variations require that the photodiodes be somewhat back-biased. This produces a substantially higner average RDA at the expense of higher detector l/f noise due to surface leakage. In tnis study we have investigated the detector impedance requirements in terms of tne injection efficiency, threshold nonuniformities, the input MOSFET excess (l/f) noise, and tne detector excess noise. For state-of-the-art parameters, it was determined tnat tne input MOSFET l/f noise always dominates the other elements in determining the required detector impeaance:k

Paper Details

Date Published: 30 June 1982
PDF: 11 pages
Proc. SPIE 0311, Mosaic Focal Plane Methodologies II, (30 June 1982); doi: 10.1117/12.932796
Show Author Affiliations
S. B. Grossman, Lockheed Palo Alto Research Laboratory (United States)
R. B. Emmons, Lockheed Palo Alto Research Laboratory (United States)
S. R. Hawkins, Lockheed Palo Alto Research Laboratory (United States)


Published in SPIE Proceedings Vol. 0311:
Mosaic Focal Plane Methodologies II
William S. Chan; John T. Hall, Editor(s)

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