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DESIGN AND IMPLEMETTATION OF CMOS IMAGE SENSOR
Authors:Liu Yu  Wang Guoyu
Abstract:A single Complementary Metal Oxide Semiconductor (CMOS) image sensor based on 0.35 μm process along with its design and implementation is introduced in this paper. The pixel architecture of Active Pixel Sensor (APS) is used in the chip, which comprises a 256×256 pixel array together with column amplifiers, scan array circuits, series interface, control logic and Analog-Digital Converter (ADC). With the use of smart layout design, fill factor of pixel cell is 43%. Moreover, a new method of Dynamic Digital Double Sample (DDDS) which removes Fixed Pattern Noise (FPN) is used.The CMOS image sensor chip is implemented based on the 0.35 μm process of chartered by Multi-Project Wafer (MPW). This chip performs well as expected.
Keywords:Complementary Metal Oxide Semiconductor (CMOS)  Active Pixel Sensor (APS)  Fill factor  Dynamic Digital Double Sample (DDDS)  Fixed Pattern Noise (FPN)
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