| 摘要 |
PROBLEM TO BE SOLVED: To obtain a reference voltage by compensating temperature nonlinearity of a diode without increasing a circuit scale, and to provide a low current-consumptive reference voltage circuit that operates at a low voltage. SOLUTION: First, second and third current-voltage conversion circuits I-V1, I-V2 and I-V3, first, second and third current mirror circuits M1, M2 and M3, and a control means AP1 that equalizes an output voltage from the first current-voltage conversion circuit I-V1 and an output voltage from the second current-voltage conversion circuit I-V2 to each other are included; a predetermined voltage from the third current-voltage conversion circuit I-V3 is used as the reference voltage; the first current-voltage conversion circuit I-V1 includes a resistor that is connected in parallel with the diode; the second current-voltage conversion circuit I-V2 includes a plurality of diodes that are connected in parallel with each other, a resistor that is connected in parallel with the plurality of diodes, a resistor that is connected in series with the parallel circuit of the plurality of diodes and the resistor, and a resistor that is connected in parallel with the serial circuit of the parallel circuit and the resistor; and the third current-voltage conversion circuit (I-V3) includes a resistor. COPYRIGHT: (C)2009,JPO&INPIT
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