Solid-state image pickup device and camera

摘要

A solid-state image pickup device has signal lines to which photoreceiving elements are connected; a clamp circuit that has clamp capacitors where one terminal is connected to the signal lines and the other terminals are short-circuited, has a switch for applying a reference voltage to the other terminals by the clamping operation, and adds signals from the plurality of elements provided in the row direction along with the clamping operation; adding means (switches and capacitors) which is connected to the other terminals, adds addition signals of the respective element rows outputted from the other terminals, and adds the signals of the plurality of elements provided in the column direction; an amplifier connected to the that means; a switch for resetting the amplifier's input side; and circuit means (switches and capacitors) for outputting an offset of and the signal from the amplifier.