| 摘要 |
A system has a corrected unit, and a correction unit that performs binary search of a correction value with which an output of the corrected unit gets close to a reference value and feeds back the correction value to the corrected unit. The correction unit performs the additional comparison for comparing a first output of the corrected unit corresponding to a first correction value searched by the binary search and a second output, which is an output of the corrected unit corresponding to a second correction value that is adjacent to the first correction value and is an output that the voltage relationship to the reference value is opposite to the first output, and for selecting the first or second correction value corresponding to the first or second output closer to the reference value, and feeds back the selected correction value to the corrected unit.
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