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24 April 2002 Low-noise signal detection technique in CMOS image sensors using frame oversampling and nondestructive high-speed readout
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Abstract
In this paper, we propose a method of low-noise signal detection technique using frame oversampling and a CMOS image sensor with non-destructive high-speed readout mode. The technique enables the use of the high-gain column amplifier and the digital integration of signals without noise accumulation. The column amplifier is effective to reduce the noise due to the wideband amplifier and the quantization noises. The least square estimation of the noise using the intermediate non-destructive outputs further reduces the noise level. Simulation results show that the input referred noise can be reduced to a few electrons.
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Shoji Kawahito and Nobuhiro Kawai "Low-noise signal detection technique in CMOS image sensors using frame oversampling and nondestructive high-speed readout", Proc. SPIE 4669, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications III, (24 April 2002); https://doi.org/10.1117/12.463417
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