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Sub-1-V Supply Self-Adaptive CMOS Image Sensor Cell With 86-dB Dynamic Range

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2 Author(s)
Sungsik Lee ; Korea Adv. Inst. of Sci. & Technol., Daejeon ; Kyounghoon Yang

This letter presents a high dynamic range CMOS active pixel structure operating at a sub-1-V supply voltage, which is implemented using a standard 0.18-mum CMOS logic process. In order to improve the output voltage swing range and associated pixel dynamic range at a low supply voltage, a pMOS reset structure is incorporated into the pixel structure along with a photogate pixel structure based on the self-adaptive photosensing operation. At a low supply voltage of 0.9 V, the new pixel provides an output voltage swing range of 0.41 V and a high dynamic range of 86 dB, which is the highest among the reported pixel structures up to date operating at sub-1-V

Published in:

IEEE Electron Device Letters  (Volume:28 ,  Issue: 6 )