| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear correction circuit and a linear correction method which can correct output characteristic of a voltage signal in linear manner to improve measurement accuracy in a sensor device for converting the output signal of a sensor element to voltage and outputting a voltage signal, and to provide a sensor device. SOLUTION: The linear correction circuit is provided with: a voltage-current conversion means to convert voltage obtained by converting the output signal of a sensor element to voltage, to current; a correction current synthesizing means to synthesize correction current on the basis of the output current of the voltage-current conversion means; a current quantity adjusting means to adjust current so as to determine a correction quantity from the correction current output by the correction current synthesizing means; and a correction voltage generation means to generate correction voltage so as to correct the output characteristic of the voltage signal in linear manner from the correction quantity determination current obtained by the current quantity adjusting means. Thus, current for determining the correction quantity from the synthesized correction current on the basis of the output signal of the sensor element is adjusted, so that the correction voltage can be generated. COPYRIGHT: (C)2009,JPO&INPIT
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