Indium gallium arsenide and colloidal quantum dot SWIR sensors can produce stronger contrast imagery than their visible counterparts due to the reduced scattering in the SWIR band. A 640 x 512 format, 10 μm pixel pitch low-noise highsensitivity DROIC, with a capacitive transimpedance amplifier pixel front end, for SWIR imaging is presented. This DROIC has variable gain pixels with well capacities of approximately 22 ke- in high gain, 160 ke- in mid gain and 1.1 Me- in low gain. The readout boasts a low read noise of only 15 e- rms at room temperature in high gain with correlated double sampling. This DROIC can run at 700 fps full frame and 8.9 kfps for 32 x 32 window.
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Poonnen et al. (2024) studied this question.
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