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Open AccessArticle

CDL, a Precise, Low-Cost Coincidence Detector Latch

Department for Informatics and Electrical Engineering, Institute of Applied Microelectronics and Computer Engineering, University of Rostock, Rostock 18051, Germany
Author to whom correspondence should be addressed.
Academic Editor: Ignacio Bravo-Muñoz
Electronics 2015, 4(4), 1018-1032;
Received: 26 August 2015 / Revised: 10 November 2015 / Accepted: 17 November 2015 / Published: 3 December 2015
PDF [582 KB, uploaded 3 December 2015]


The electronic detection of the coincidence of two events is still a key ingredient for high-performance applications, such as Positron Emission Tomography and Quantum Optics. Such applications are demanding, since the precision of their calculations and thus their conclusions directly depend on the duration of the interval in which two events are considered coincidental. This paper proposes a new circuitry, called coincidence detector latch (CDL), which is derived from standard RS latches. The CDL has the following advantages: low complexity, fully synthesizable, and high scalability. Even in its simple implementation, it achieves a coincidence window width as short as 115 ps, which is more than 10 times better than that reported by recent research. View Full-Text
Keywords: optical instrumentation and technology; coincidence detection; FPGA coincidence logic optical instrumentation and technology; coincidence detection; FPGA coincidence logic

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Joost, R.; Salomon, R. CDL, a Precise, Low-Cost Coincidence Detector Latch. Electronics 2015, 4, 1018-1032.

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