RAMP SIGNAL OUTPUT CIRCUIT, ANALOG-TO-DIGITAL CONVERSION CIRCUIT, IMAGING DEVICE, METHOD FOR DRIVING RAMP SIGNAL OUTPUT CIRCUIT, METHOD FOR DRIVING ANALOG-TO-DIGITAL CONVERSION CIRCUIT, AND METHOD FOR DRIVING IMAGING DEVICE

摘要

A circuit configured to output a ramp signal having a potential varying depending on time includes a voltage supply unit configured to supply a plurality of voltages having different amplitudes, a current supply unit, an integration circuit configured to output the ramp signal, and a capacitive element. The voltage supply unit is connected to one terminal of the capacitive element. The integration circuit and the current supply unit are connected to another terminal of the capacitive element.