Patent ID: 7808537

Claim:
A photoelectric conversion apparatus, comprising: a pixel area where a plurality of pixels are arranged; an amplifier configured to amplify a signal from the pixel area; and a plurality of signal paths for transmitting signals from the pixel area to the amplifier, wherein the amplifier is a fully differential amplifier that includes a plurality of input terminals, including a first input terminal and a second input terminal to which the signals from the plurality of signal paths are supplied, and a plurality of output terminals, including a first output terminal and a second output terminal, wherein the plurality of input terminals and the plurality of output terminals have no feedback path provided therebetween, and wherein the fully differential amplifier further includes: a voltage-current conversion circuit including a third output terminal and a fourth output terminal for outputting a differential signal between the signals supplied to the first input terminal and the second input terminal, and a current-voltage conversion circuit including a third input terminal and a fourth input terminal to which the differential signal from the voltage-current conversion circuit is supplied and using the first output terminal and the second output terminal as output terminals.