| 摘要 |
PROBLEM TO BE SOLVED: To incorporate a diode for generating a voltage having a temperature gradient, in an IC and to fix not only a voltage step between resistively divided voltages but also the temperature gradient of each voltage, in a voltage generation circuit for generating a voltage having a temperature gradient. SOLUTION: A voltage Vref which doesn't have a temperature gradient and a voltage Vd1 having a temperature gradient are generated. Voltages V11 and V12 resulting from resistive division of the voltage Vref are generated. Voltages Vd1, V11, and V12 are subjected to arithmetic processing by using a first operational amplifier OP14 for arithmetic processing and a second operational amplifier OP15 for arithmetic processing, to generate voltage VH1 and VL1. A voltage difference between the voltages VH1 and VL1 is expressed by VH1-VL1=mag×(V12-V11) and is a fixed voltage having temperature dependency excluded therefrom. COPYRIGHT: (C)2005,JPO&NCIPI
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