25 April 1997 Optimization of noise and responsivity in CMOS active pixel sensors for detection of ultralow-light levels
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Abstract
In this paper, we present results of the investigation of the design and operation of CMOS active pixel sensors for detection of ultra-low light levels. We present a detailed noise model of APS pixel and signal chain. Utilizing the noise model, we have developed APS pixel designs that can achieve ultra-low noise and high responsivity. We present results from two test chips, that indicate (1) that less than 5 electrons of read noise is possible with CMOS APS by reducing the size of the pixel transistors, and (2) that high responsivity can be achieved when the fill-factor of the photodiode is reduced.
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Orly Yadid-Pecht, Orly Yadid-Pecht, Karmak Mansoorian, Karmak Mansoorian, Eric R. Fossum, Eric R. Fossum, Bedabrata Pain, Bedabrata Pain, } "Optimization of noise and responsivity in CMOS active pixel sensors for detection of ultralow-light levels", Proc. SPIE 3019, Solid State Sensor Arrays: Development and Applications, (25 April 1997); doi: 10.1117/12.275185; https://doi.org/10.1117/12.275185
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