A technique, developed by Cincinnati Electronics and Jet Propulsion Laboratory, of utilizing charge integration with InSb photovoltaic arrays is described. This device uses a MOSFET switched silicon multiplexer to sequentially connect each detector to a common line and JFET amplifier. A noise model is presented which can be used to predict performance of the detector/multiplexer system. Performance prediction curves are included that allow comparisons and decisions related to system design. This noise model can be generalized to calculate performance characteristics, particularly D* and NEP, for any detector/multiplexer configuration.
R. Michael Davis,
Curtiss A. Niblack,
"Performance Predictions Of InSb Switched Fet Hybrid Arrays", Proc. SPIE 0627, Instrumentation in Astronomy VI, (13 October 1986); doi: 10.1117/12.968121; https://doi.org/10.1117/12.968121