Title :
A Single-Photon Avalanche Diode Imager for Fluorescence Lifetime Applications
Author :
Schwartz, David Eric ; Charbon, Edoardo ; Shepard, K.L.
Author_Institution :
Columbia Univ., New York
Abstract :
A 64-by-64-pixel CMOS single-photon avalanche diode (SPAD) imager for time-resolved fluorescence detection features actively quenched and reset pixels, allowing gated detection to eliminate pile-up nonlinearities common to most time-correlated single-photon counting (TCSPC) approaches. Timing information is collected using an on-chip time-to-digital converter (TDC) based on a counter and a supply-regulated delay-locked loop (DLL).
Keywords :
CMOS image sensors; avalanche diodes; counting circuits; delay lock loops; radiation quenching; CMOS SPAD; DLL; TCSPC; TDC; fluorescence lifetime application; on-chip time-to-digital converter; picture size 64 pixel; single-photon avalanche diode imager; supply-regulated delay-locked loop; time-correlated single-photon counting approach; time-resolved fluorescence detection; CMOS technology; Cathodes; Circuits; Clocks; Delay; Diodes; Fluorescence; Pixel; Timing; Voltage;
Conference_Titel :
VLSI Circuits, 2007 IEEE Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-4-900784-05-5
Electronic_ISBN :
978-4-900784-05-5
DOI :
10.1109/VLSIC.2007.4342691
