Title :
Compact analog counting SPAD pixel with 1.9% PRNU and 530ps time gating
Author :
Pancheri, Lucio ; Panina, Ekaterina ; Dalla Betta, Gian-Franco ; Gasparini, Leonardo ; Stoppa, David
Author_Institution :
Univ. of Trento, Trento, Italy
Abstract :
In this paper, a pixel for time-resolved single photon detection is presented. The pixel includes a passively quenched Single-Photon Avalanche Diode (SPAD), a gating circuit and an analog counter based on charge sharing approach. The analog output signal delivered by the pixel is quantized in discrete levels, corresponding to different photon counts. Three linear arrays with different pixel versions were fabricated in a standard 0.15μm CMOS technology. The electro-optical characterization demonstrated a counter non-uniformity of 1.1% and a Photo-Response Non-Uniformity (PRNU) of 1.9%, including SPAD non-uniformity. The pixel exhibits shot-noise limited operation and a minimum gating window width of 530ps FWHM.
Keywords :
CMOS integrated circuits; avalanche photodiodes; counting circuits; CMOS technology; FWHM; analog counter; analog output signal; charge sharing approach; discrete levels; electro-optical characterization; gating circuit; gating window width; linear arrays; photo-response nonuniformity; photon counts; pixel versions; shot-noise limited operation; size 0.15 mum; time 530 ps; CMOS integrated circuits; CMOS technology; Feature extraction; Noise; Photonics; Radiation detectors; Transistors;
Conference_Titel :
ESSCIRC (ESSCIRC), 2013 Proceedings of the
Conference_Location :
Bucharest
Print_ISBN :
978-1-4799-0643-7
DOI :
10.1109/ESSCIRC.2013.6649131
