Quenching bias circuit with current mirror for single photon detection

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Abstract

<p>To minimize the characteristic variation of SPADs (Single-Photon Avalanche Photo Diodes) with bias, a current mirror based quenching bias circuit is implemented and tested for Single Photon Detection. With the proposed quenching bias circuit, the operational bias variation of SPADs is successfully reduced. A SPAD and quenching bias circuit are integrated in a 43 µm × 43 µm area to make a micro pixel. The optimized bias circuit maximizes the photon detection area to have more than 50% fill factor. This paper is based on a 0.18 µm standard CMOS process with thick gate oxide option.</p>

Journal

  • IEICE Electronics Express

    IEICE Electronics Express 16 (23), 20190657-20190657, 2019

    The Institute of Electronics, Information and Communication Engineers

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