Patent ID: 7511568

Claim:
A reference voltage circuit comprising: first and second current-to-voltage conversion circuits, each for receiving a current and converting the current to a voltage; control means for performing control so that the voltage of said first current-to voltage conversion circuit becomes equal to the voltage of the second current-to-voltage conversion circuit; a first current mirror circuit for outputting a current proportionate to a value of the current supplied to one of said first current-to-voltage conversion circuit and said second current-to-voltage conversion circuit; and a third current-to-voltage conversion circuit for receiving the output current from said first current mirror circuit, and converting the output current to a voltage, for output; wherein each of said first and second current-to-voltage conversion circuits includes one of: a circuit comprising a serial circuit comprising a first diode and a first resistor connected in series with each other, and a second resistor connected in parallel with the series circuit; and a circuit comprising a parallel circuit comprising a first diode and a first resistor connected in parallel with each other, and a second resistor, having only two terminal elements, connected in series with the parallel circuit.