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A Two-Stage Charge Transfer Active Pixel CMOS Image Sensor With Low-Noise Global Shuttering and a Dual-Shuttering Mode

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3 Author(s)
Yasutomi, K. ; Grad. Sch. of Electron. Sci. & Technol., Shizuoka Univ., Hamamatsu, Japan ; Itoh, S. ; Kawahito, S.

A complementary metal-oxide-semiconductor (CMOS) image sensor with low-noise global shuttering and a dual-shuttering mode is presented. The developed two-stage charge transfer pixel enables noise canceling by means of true correlated double sampling. The implemented prototype demonstrates for the first time that a noise level of less than three electrons can be achieved in a global-shutter CMOS image sensor while attaining high shutter efficiency of 99.7%. In the dual-shuttering mode, both a pinned storage diode signal and a floating diffusion signal are used for desirable functions such as wide-dynamic-range imaging, motion detection, and dual consecutive snapshot imaging.

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Electron Devices, IEEE Transactions on  (Volume:58 ,  Issue: 3 )