REFERENCE VOLTAGE GENERATION CIRCUIT

PROBLEM TO BE SOLVED: To provide a reference voltage generation circuit capable of supplying two bias voltages by current output for one path and an operational amplifier and reducing the number of elements. SOLUTION: In a DC circuit 50 for performing the offset correction and bias adjustment in recording and reproducing audio signals, the audio signals from an input terminal in are voltage/current converted by a voltage/current conversion circuit part 50A and outputted to an invertible amplifier circuit part 50B. The invertible amplifier circuit part 50B is provided with an operational amplifier 80 for constituting a first invertible amplifier circuit and an operation amplifier 82 for constituting a second invertible amplifier circuit. From the output terminal out1 of the operational amplifier 80, an output voltage Vout1 by the bias voltage V1 which is optimum for a power source Vcc1 is outputted. Also, from the output terminal out2 of the operational amplifier 82, the output voltage Vout2 by the bias voltage V2 optimum for the power source Vcc2 is outputted.