Title :
Design of a direct light to time converter and its noise analysis
Author :
Sallin, Denis ; Koukab, Adii ; Kayal, Maher
Author_Institution :
Inst. of Electr. Eng. (IEL), Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
Abstract :
This paper presents a fully Digital Pixel Sensor (DPS) front-end with a focus on its noise modelling and analysis. The design relies on a new type of photodetector displaying an intrinsic light-to-time conversion. Avoiding the pixel level analog processing improves significantly the overall performances of the image sensor. The photodetector as well as its front-end circuit are described. The noise performances and their variations with the physical and bias conditions are theoretically and experimentally studied.
Keywords :
image sensors; optical noise; photodetectors; bias conditions; fully digital pixel sensor front-end; image sensor; intrinsic light-to-time conversion; noise analysis; noise modelling; noise performances; photodetector; physical conditions; CMOS integrated circuits; Cathodes; Logic gates; Photodetectors; Signal to noise ratio; Standards; CMOS; Noise; Pulse Modulation Imaging; Sensor Front-End; Silicon Photodetector;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on
DOI :
10.1109/ICECS.2014.7050043
