A column-based pixel-gain-adaptive CMOS image sensor for low-light-level imaging
2003
A 0.25 /spl mu/m technology CMOS image sensor employs a 4.2 /spl mu/m pitch pinned-photodiode pixel. A column amplifier and digital domain processing reduce the fixed pattern noise to 55 /spl mu/V. The saturation voltage is 1 V with a 2.5 V supply voltage, and the dynamic range is 69 dB.
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