ANALOG SIGNAL GENERATION DEVICE AND CALIBRATION METHOD OF SAME
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United States of America Patent
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Issued Date -
Oct 10, 2024
app pub date -
Mar 26, 2024
filing date -
Apr 5, 2023
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Abstract
An analog signal generation device according to the present invention includes a DA converter that adjusts a signal level of a digital signal according to a DAC correction amount and then converts the digital signal into an analog signal, a detector that detects the analog signal and outputs a detection signal, a storage unit that stores a characteristic equation for calculating the DAC correction amount, and a control unit, in which in a case where the differential voltage when the digital signal having a signal level of a predetermined value is input to the DA converter is larger than a threshold value, the control unit calculates a new DAC correction amount based on the differential voltage by using the characteristic equation, and in a case where the differential voltage does not fall within the threshold value, the control unit corrects the characteristic equation.
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