Title :
Optimized operation and temperature dependence of a direct light-to-time converter
Author :
Sallin, Denis ; Koukab, Adil ; Kayal, Maher
Author_Institution :
Electron. Lab. (Elab), Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
Abstract :
This paper presents a fully Digital Pixel Sensor (DPS) front-end with a focus on the optimization of its operation and temperature dependence. The system relies on a new type of photodetector based on a hybrid MOS-PN structure displaying intrinsic light-to-time conversion. The photodetector as well as its front-end circuit are described as well as pulsed operation techniques that increase the Signal to Noise Ratio (SNR). The presented pulsed operation of the photodetector behaves as a direct light-to-digital conversion. Temperature dependence and its variation with bias conditions are theoretically and experimentally studied.
Keywords :
CMOS integrated circuits; photodetectors; power convertors; readout electronics; direct light-to-time converter; front-end circuit; fully digital pixel sensor front-end; photodetector; pulsed operation techniques; temperature dependence; Anodes; Cathodes; Logic gates; Photodetectors; Signal to noise ratio; Temperature dependence; Temperature measurement; CMOS; Pulse Modulation Imaging; Sensor Front-End; Silicon Photodetector;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International
DOI :
10.1109/NEWCAS.2015.7182009
