| 摘要 |
There is provided a reference voltage generating circuit generating a reference voltage to be applied to a current-to-voltage converting circuit in order to compensate for an offset voltage of the current-to-voltage converting circuit converting an input current into a voltage and outputting the voltage, the reference voltage generating circuit including: a sampling conversion circuit having the same circuit characteristics as the current-to-voltage converting circuit and adding a predetermined offset to the reference voltage to generate an output voltage; and a comparator controlling the reference voltage so that the output voltage of the sampling conversion circuit is equal to a predetermined voltage, wherein the reference voltage is applied as an input to the sampling conversion circuit.
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