Abstract: A reference voltage generator circuit includes a band gap reference voltage circuit that generates a predetermined reference voltage, and a first correction current generator circuit that generates a first correction current in response to change in temperature. The first correction current generator circuit generates a plurality of voltage peaks in response to the change in temperature in the output voltage of the reference voltage generator circuit by injecting the first correction current into the band gap reference voltage circuit, and output voltage characteristics configuring each of the plurality of voltage peaks are made such that the output voltage varies continuously with respect to the change in temperature. The first correction current generator circuit includes a temperature setting circuit that can change the plurality of temperatures corresponding to each of the plurality of voltage peaks.

Abstract: A reference voltage generator circuit is provided with a first voltage generator circuit that generates a first direct-current voltage; a second voltage generator circuit that generates a second direct-current voltage; and an operational amplifier that generates a voltage difference between the first and second direct-current voltages. The reference voltage generator circuit generates a reference voltage based on a band gap by controlling currents flowing in the first and second voltage generator circuits based on the voltage difference, and includes a third voltage generator circuit including a PNP bipolar transistor, which is connected in parallel with the first voltage generator circuit. The third voltage generator circuit generates a third direct-current voltage corresponding to a base current flowing in the PNP bipolar transistor, and applies it to the operational amplifier with the first direct-current voltage.

Abstract: A reference voltage generator circuit is provided with a first voltage generator circuit that generates a first direct-current voltage; a second voltage generator circuit that generates a second direct-current voltage; and an operational amplifier that generates a voltage difference between the first and second direct-current voltages. The reference voltage generator circuit generates a reference voltage based on a band gap by controlling currents flowing in the first and second voltage generator circuits based on the voltage difference, and includes a third voltage generator circuit including a PNP bipolar transistor, which is connected in parallel with the first voltage generator circuit. The third voltage generator circuit generates a third direct-current voltage corresponding to a base current flowing in the PNP bipolar transistor, and applies it to the operational amplifier with the first direct-current voltage.