A Compact High-Speed Active Quenching and Recharging Circuit for SPAD Detectors
A compact high-speed active quenching and recharging circuit (AQRC) is proposed for single-photon avalanche diode (SPAD) detectors fabricated in standard 0.18 μm CMOS technology. A novel sensing and quenching scheme is employed to speed up the process of avalanche detection, enabling a low afterpuls...
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Published in | IEEE photonics journal Vol. 12; no. 5; pp. 1 - 8 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Piscataway
IEEE
01.10.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
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Summary: | A compact high-speed active quenching and recharging circuit (AQRC) is proposed for single-photon avalanche diode (SPAD) detectors fabricated in standard 0.18 μm CMOS technology. A novel sensing and quenching scheme is employed to speed up the process of avalanche detection, enabling a low afterpulsing probability and a high photon-counting rate. The simulation and experimental results indicate that the sensing and quenching time is reduced down to 0.7 ns and the maximum photon-counting rate is close to 200 Mcps (counts per second), meanwhile the afterpulsing probability as low as 0.75% is obtained. Due to the compact configuration, the area occupation of the AQRC is only 306 μm 2 . Such outstanding advantages suggest that the proposed AQRC is very suitable for the miniaturized and high-speed SPAD-array detectors. |
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ISSN: | 1943-0655 1943-0655 1943-0647 |
DOI: | 10.1109/JPHOT.2020.3015872 |