Photoelectric conversion device and image sensor

Abstract

A photoelectric conversion device and an image sensor having a plurality of photodetectors and peripheral circuits, configured with MOS transistors, which are integrally formed on a semiconductor substrate. In the peripheral circuits, including a MOS operational amplifier, for outputting electric signals obtained from the photodetectors to outside, a source follower using an n-channel MOS transistor and a source follower using a p-channel MOS transistor are formed subsequent to the MOS operational amplifier. Output from the MOS operational amplifier enters the gate of the source follower of the n-channel MOS transistor, output from the source follower of the n-channel MOS transistor enters the gate of the source follower using a p-channel MOS transistor, and output from the source follower of the p-channel MOS transistor enters a negative input terminal of the MOS operational amplifier as well as is outputted to outside to drive an external load.

Dependencies are inferred from the claim text.