Opto-electronic converter, image reading device, and image forming apparatus

An opto-electronic converter, comprising:

• light-receiving elements configured to convert light of different colors into analog signals, each of the analog signals representing a pixel;
• an amplifier circuit configured to amplify the analog signals, into which the light is converted by the light-receiving elements, in each pixel group, the pixel group including a plurality of the light-receiving elements;
• and
• a gain switch circuit configured to switch, for each light-receiving element of the light-receiving elements included in the pixel group, a gain of the amplifier circuit to a predetermined gain that depends on a color of the light converted by the light-receiving element, the gain switch circuit switching the gain of the amplifier in accordance with a timing control signal received from a controller.