Photoelectric conversion device, photoelectric conversion system, and moving body

A photoelectric conversion device comprising:

• a pixel array including a plurality of aperture pixels arranged so as to form a plurality of rows and a plurality of columns;
• a plurality of signal lines arranged in the pixel array so as to allow readout of signals from the plurality of aperture pixels;
• a plurality of current sources connected to the plurality of signal lines, respectively;
• a first voltage supply line configured to supply a first reference voltage to the plurality of aperture pixels;
• a first pad connected to the first voltage supply line;
• a bias circuit configured to supply a bias voltage to the plurality of current sources;
• a second voltage supply line electrically separated from the first voltage supply line, and configured to supply a second reference voltage to the bias circuit;
• and
• a second pad connected to the second voltage supply line.