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Proceedings Paper

A flexible compact readout circuit for SPAD arrays
Author(s): Danial Chitnis; Steve Collins
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Paper Abstract

A compact readout circuit that can be integrated between individual single photon avalanche detectors (SPADs) is described. The circuit uses minimum sized transistors to both quench the avalanche process in the photodetector and integrate charge onto a capacitor to represent the number of detected photons. An additional transistor is integrated within the circuit so that the integration capacitance can be isolated from the source-follower output circuit before the integration time has elapsed. This device can be used by the user to control the relationship between the number of detected photons and the output voltage.

Paper Details

Date Published: 18 August 2010
PDF: 9 pages
Proc. SPIE 7780, Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon, 77801E (18 August 2010); doi: 10.1117/12.859865
Show Author Affiliations
Danial Chitnis, Univ. of Oxford (United Kingdom)
Steve Collins, Univ. of Oxford (United Kingdom)

Published in SPIE Proceedings Vol. 7780:
Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon
Eustace L. Dereniak; John P. Hartke; Paul D. LeVan; Randolph E. Longshore; Ashok K. Sood; Manijeh Razeghi, Editor(s)

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