A reference voltage generation circuit includes a voltage dividing circuit, a transistor, and a capacitor. The voltage dividing circuit divides a power-supply voltage into a specified level to generate a predetermined voltage. The transistor has a gate applied with the predetermined voltage and a drain outputting, as a reference voltage, a voltage obtained by adding the predetermined voltage and a threshold voltage of the transistor. The capacitor bypasses the gate and source of the transistor. Moreover, one end of the capacitor is connected to the gate of the transistor, and the other end of the capacitor is connected to the source of the transistor and ground. Furthermore, an electric charge output source which outputs an electric charge is connected to the drain of the transistor.