Title :
Low power linear current mode imager with 1.5 transistors per pixel
Author :
Gruev, Viktor ; Yang, Zheng ; Spiegel, Jan Van der
Author_Institution :
Electr. & Syst. Eng. Dept., Univ. of Pennsylvania, Philadelphia, PA
Abstract :
A novel 1.5 transistors per pixel linear current mode active pixel sensor (APS) is presented. The photo pixel address switch is placed outside the pixel, effectively implementing 1.5 transistors per pixel using a sharing scheme of the read-out and reset transistor. The column FPN of 0.4% and SNR of 43 dB is measured. The total power consumption is 5 mW at 30 fps. A theoretical framework for optimizing temporal and spatial noise is presented.
Keywords :
image sensors; transistors; noise figure 43 dB; photopixel address; pixel linear current mode active pixel sensor; power 5 mW; power consumption; read-out-reset transistor; sharing scheme; spatial noise; temporal noise; transistors; CMOS technology; Circuits; Energy consumption; High-resolution imaging; Image sensors; Photodiodes; Pixel; Sensor arrays; Signal to noise ratio; Switches;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541874
