Solid-state imaging device, drive method thereof and camera system

摘要

A solid-state imaging device includes: pixel signal reading lines; a pixel unit in which pixels including photoelectric conversion elements are arranged; and a pixel signal reading unit performing reading of pixel signals from the pixel unit through the pixel signal reading lines, wherein the pixel signal reading unit includes current source circuits each of which includes a load element as a current source connected to the pixel signal reading line forming a source follower, and the current source circuit includes a circuit generating electric current according to a slew rate of the pixel signal reading line and replicating electric current corresponding to the above electric current to flow in the current source.