Compact SPAD-Based Pixel Architectures for Time-Resolved Image Sensors
نویسندگان
چکیده
منابع مشابه
Compact SPAD-Based Pixel Architectures for Time-Resolved Image Sensors
This paper reviews the state of the art of single-photon avalanche diode (SPAD) image sensors for time-resolved imaging. The focus of the paper is on pixel architectures featuring small pixel size (<25 μm) and high fill factor (>20%) as a key enabling technology for the successful implementation of high spatial resolution SPAD-based image sensors. A summary of the main CMOS SPAD implementations...
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We present the challenges of using single-photon avalanche diodes in large arrays and the architectures employed in the readout systems. We also discuss the elements that make these imagers appealing for some applications and why.
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In this work, three different pixels for time-resolved, single-photon imaging are investigated. The pixels include a Single-Photon Avalanche Diode (SPAD), a gating circuit and an analog counter. The presented structures aim at achieving sub-nanosecond gating performance with a reduced number of transistors to enable high resolution imaging with a high fill factor. The pixels have been implement...
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Abstrac t We report on the design and characterization of three different architectures, namely two Time-toDigital Converters (TDCs) and a Time-to-Amplitude Converter (TAC) with embedded analog-to-digital conversion, implemented in a 130-nm CMOS imaging technology. The proposed circuit solutions are conceived for implementation at pixel-level, in image sensors exploiting Single-Photon Avalanche...
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ژورنال
عنوان ژورنال: Sensors
سال: 2016
ISSN: 1424-8220
DOI: 10.3390/s16050745