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31 May 2012 Flexible readout and integration sensor (FRIS): a bio-inspired, system-on-chip, event-based readout architecture
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Abstract
We present a bio-inspired system-on-chip focal plane readout architecture which at the system level, relies on an event based sampling scheme where only pixels within a programmable range of photon flux rates are output. At the pixel level, a one bit oversampled analog-to-digital converter together with a decimator allows for the quantization of signals up to 26 bits. Furthermore, digital non-uniformity correction of both gain and offset errors is applied at the pixel level prior to readout. We report test results for a prototype array fabricated in a standard 90nm CMOS process. Tests performed at room and cryogenic temperatures demonstrate the capability to operate at a temporal noise ratio as low as 1.5, an electron well capacity over 100Ge-, and an ADC LSB down to 1e-.
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Joseph H. Lin, Philippe O. Pouliquen, Andreas G. Andreou, Arnold C. Goldberg, and Charbel G. Rizk "Flexible readout and integration sensor (FRIS): a bio-inspired, system-on-chip, event-based readout architecture", Proc. SPIE 8353, Infrared Technology and Applications XXXVIII, 83531N (31 May 2012); https://doi.org/10.1117/12.919584
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