| CPC H04N 25/772 (2023.01) [H04N 25/616 (2023.01)] | 19 Claims |
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1. A photoelectric conversion device comprising:
a pixel portion in which a plurality of pixels, each including a photoelectric conversion element, are arranged in a matrix;
a sample-and-hold unit configured to sample a signal generated in the photoelectric conversion element via a vertical signal line from the pixel portion and hold the signal; and
a conversion unit configured to perform an analog-to-digital conversion on a signal outputted from the sample-and-hold unit,
wherein in the sample-and-hold unit, a first sample-and-hold circuit that samples a signal for when the photoelectric conversion element is reset and a second sample-and-hold circuit that samples a signal for when a photoelectric conversion operation is performed in the photoelectric conversion element are connected to one vertical signal line,
wherein the pixel portion is arranged on a first substrate,
wherein a part of a group, the group being configured by the sample-and-hold unit and the conversion unit, and a first current source configured to provide a current to the sample and hold unit, are arranged on a second substrate,
wherein another part of the group and a second current source configured to provide a current to the conversion unit are arranged on a third substrate,
wherein in the sample-and-hold unit, a third sample-and-hold circuit is connected to a vertical signal line different from the one vertical signal line, and
wherein a distance between a capacitive element included in the first sample-and-hold circuit and a capacitive element included in the second sample-and-hold circuit is shorter than a distance between the capacitive element included in the first sample-and-hold circuit and a capacitive element included in the third sample-and-hold circuit.
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