| CPC H04N 25/60 (2023.01) [H04N 25/77 (2023.01); H04N 25/78 (2023.01)] | 20 Claims |
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1. An image sensor comprising:
a pixel array including a plurality of pixels;
a ramp signal generator configured to generate a ramp signal;
a plurality of first attenuators with each first attenuator connected to a respective column of the plurality of pixels, and each first attenuator configured to receive a pixel signal from a respective pixel belonging to a selected row from among the plurality of pixels;
a plurality of second attenuators with each second attenuator corresponding to the respective column of the plurality of pixels, and each second attenuator configured to receive the ramp signal from the ramp signal generator; and
a plurality of analog-to-digital converters configured to output digital signals by comparing first signals output from the plurality of first attenuators and second signals output from the plurality of second attenuators,
wherein each of the plurality of first attenuators and each of the plurality of second attenuators comprises a first capacitor and a second capacitor, and
wherein the first capacitor and the second capacitor are between two guard rings having a pitch corresponding to one column from columns of the plurality of pixels and are arranged sequentially along a second direction perpendicular to a first direction in which the two guard rings extend so as to be symmetrical along the second direction.
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