Photoelectric conversion apparatus and imaging system

摘要

A photoelectric conversion apparatus includes a photoelectric-conversion element configured to output electric charges generated by photoelectric conversion to a first node, and an accumulation circuit having an input terminal connected to the first node and being capable of changing an integral capacitance value. The number of drain or source of a MOS transistor in an OFF state connected to the first node is one.

主权项

1. A photoelectric conversion apparatus comprising:
a photoelectric-conversion element configured to output electric charges generated by photoelectric conversion to a first node; and an accumulation circuit having an input terminal connected to the first node and being capable of changing an integral capacitance value, wherein in an electric charge accumulation period, number of drain or source of a MOS transistor in an OFF state connected to the first node is one; the accumulation circuit has an output terminal connected to a second node; and the accumulation circuit comprises: a first switch and a second switch serially connected between the first node and the second node; a first capacitance connected in parallel with the second switch and having one terminal connected to the second node; and a second capacitance connected between the first node and the second node.