TY - GEN
T1 - A high S/N ratio and high full well capacity CMOS image sensor with active pixel readout feedback operation
AU - Lee, Woonghee
AU - Akahane, Nana
AU - Adachi, Satoru
AU - Mizobuchi, Koichi
AU - Sugawa, Shigetoshi
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We discuss results of the design and operations of a CMOS image sensor with high S/N ratio while keeping wide dynamic range. Readout gains and input-referred noises of the image sensor are improved by actively using a pixel source follower feedback operation. A 1/4-inch 5.6 μm × 5.6 μm pixel VGA color CMOS image sensor with a lateral overflow integration capacitor in pixel in a 0.18 μm 2P3M CMOS process achieves about 1.7 times the gain compared with the case where the feedback operation is not positively used, resulting in a high input-referred conversion gain exceeded 200 μV/e -, a low inputreferred noise below 2 e- without column amplifier and a high full well capacity of about 1.3 × 105 e-.
AB - We discuss results of the design and operations of a CMOS image sensor with high S/N ratio while keeping wide dynamic range. Readout gains and input-referred noises of the image sensor are improved by actively using a pixel source follower feedback operation. A 1/4-inch 5.6 μm × 5.6 μm pixel VGA color CMOS image sensor with a lateral overflow integration capacitor in pixel in a 0.18 μm 2P3M CMOS process achieves about 1.7 times the gain compared with the case where the feedback operation is not positively used, resulting in a high input-referred conversion gain exceeded 200 μV/e -, a low inputreferred noise below 2 e- without column amplifier and a high full well capacity of about 1.3 × 105 e-.
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U2 - 10.1109/ASSCC.2007.4425780
DO - 10.1109/ASSCC.2007.4425780
M3 - Conference contribution
AN - SCOPUS:46749086772
SN - 1424413605
SN - 9781424413607
T3 - 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC
SP - 260
EP - 263
BT - 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC
T2 - 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC
Y2 - 12 November 2007 through 14 November 2007
ER -