Title :
Dark current compensation in CMOS image sensors using a differential pixel architecture
Author :
Beaudoin, Philippe M. ; Audet, Yves ; Ponce-Ponce, Victor Hugo
Author_Institution :
Electr. Eng. Dept., Ecole Polytech. de Montreal, Montreal, QC, Canada
fDate :
June 28 2009-July 1 2009
Abstract :
This paper presents a new CMOS active pixel sensor (APS) architecture aimed at compensating the effects of dark current. The suggested circuit consists of an innovative multi-branch differential amplifier configured as a multi-input negative feedback integrator. In addition to its inherent dark current compensation mechanism, the proposed circuit offers a wide dynamic range and an excellent linearity.
Keywords :
CMOS image sensors; differential amplifiers; feedback; integrating circuits; CMOS active pixel sensor architecture; CMOS image sensors; dark current compensation; differential pixel architecture; multi-branch differential amplifier; multi-input negative feedback integrator; CMOS image sensors; CMOS technology; Circuits; Dark current; Dynamic range; Image sensors; Photodetectors; Photodiodes; Pixel; Voltage;
Conference_Titel :
Circuits and Systems and TAISA Conference, 2009. NEWCAS-TAISA '09. Joint IEEE North-East Workshop on
Conference_Location :
Toulouse
Print_ISBN :
978-1-4244-4573-8
Electronic_ISBN :
978-1-4244-4574-5
DOI :
10.1109/NEWCAS.2009.5290457
