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A low-voltage CMOS complementary active pixel sensor (CAPS) fabricated using a 0.25 μm CMOS technology

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3 Author(s)
Chen Xu ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China ; Wing-Hung Ki ; Mansun Chan

A low voltage rail-to-rail CMOS complementary active pixel sensor (CAPS) architecture is presented. Compared with a conventional active pixel sensor (APS), the CAPS surpasses the bottleneck of limited output swing at ultra-low supply voltage operation imposed by highly scaled technology, making it more scalable compared with other reported architectures. The CAPS has been implemented with a commercially available 0.25 μm CMOS technology. The pixel size of the fabricated CAPS is 12 μm × 10 μm with a fill factor of 30%. It is verified that the CAPS is capable to operate at a VDD below 1 V with a reasonable output swing.

Published in:

IEEE Electron Device Letters  (Volume:23 ,  Issue: 7 )