RF refers to the station's physical RF channel. Detector temperature should be optimized for a particular application.VC refers to the station's PSIP virtual channel. Sensitivity, cutoff wavelength and response uniformity are all functions of temperature. Figure 21 shows typical thermistor resistance vs. The built in thermistor can be used to monitor or control the temperature. Thermoelectric Cooler Operation: Figures 23, 24 and 25 show typical power requirements for the TE2, TE3, and TE4 coolers. 5.0µm Cutoff Thermoelectrically Cooled PV MCT, One through Four Stages (TE1-4) 2.8µm Cutoff Room Temperature and Thermoelectrically Cooled PV MCT, One through Four Stages (TE1-4) Cooling also increases shunt resistance RD HgCdTe photodiodes also improve their response at longer wavelengths with a reduction in temperature. Temperature Effects: Cooling an HgCdTe photodiode reduces noise and improves detectivity.
The equivalent circuit is a photon-generated current source Iph with parallel capacitance CD, Shunt resistance RD, and series resistance RS. J19TE series detectors are high-quality HgCdTe photodiodes for use in the 500nm to 5.0um range. Photovoltaic Mercury Cadmium Telluride Short Form Catalog in PDF Format Photovoltaic Mercury Cadmium Telluride Detectors
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