Title :
A 1V current-mode CMOS active pixel sensor
Author :
Philipp, Ralf M. ; Etienne-Cummings, Ralph
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
A low-voltage current-mode active pixel sensor (APS) capable of operating from a 1 V power supply in a 0.35 μm standard CMOS process is proposed. The pixel utilizes a PMOS transistor biased in the linear region of operation to produce an output current linearly proportional to the integrated voltage. The 10×10 μm2 fabricated pixel has a 32% fill factor and an adjustable conversion gain of 6.3 pA/e~. This paper presents an analysis and simulations of the image sensor.
Keywords :
CMOS image sensors; current-mode circuits; low-power electronics; 0.35 micron; 1 V; 10 micron; 6400 pixel; 80 pixel; CMOS APS; current-mode active pixel sensor; integrated voltage linearly proportional output current; linear region biased PMOS transistor; low-voltage APS; pixel adjustable conversion gain; pixel fill factor; CMOS image sensors; CMOS process; CMOS technology; Circuit simulation; MOS devices; MOSFETs; Pixel; Power engineering computing; Power supplies; Threshold voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465699
