Solid-state image pickup device and method of driving the same

摘要

A solid-state image pickup device which includes, on a semiconductor substrate, an image pickup area which includes plural columns of pixels, and plural column amplifier circuits each provided at each column of pixels or at every plural columns of pixels, wherein: each of the column amplifier circuits includes at least two amplifier circuit stages; a preceding amplifier circuit is a variable-gain amplifier circuit and the switchable gains include plural one or more gains; and a subsequent amplifier circuit is capable of amplifying, at one or more gains, the signal amplified at one or more gains in the preceding amplifier circuit.

主权项

1. A solid-state image pickup device comprises an image pickup area, on a semiconductor substrate, which includes plural columns of pixels, and plural column amplifier circuits each provided at each column of pixels or at every plural columns of pixels, wherein:
each of the column amplifier circuits includes at least two amplifier circuit stages; a preceding amplifier circuit is a variable-gain amplifier circuit and the switchable gains include plural one or more gains; a subsequent amplifier circuit is capable of amplifying, at one or more gains, the signal amplified at one or more gains in the preceding amplifier circuit; a first switch is disposed on an electric path between an output node of the preceding amplifier circuit and an input node of the subsequent amplifier circuit; capacitance for phase compensation is disposed at the output node of the preceding amplifier circuit via a second switch; and a path on which reference potential is supplied to the input node via a third switch is disposed between the first switch and the input node.