AD CONVERTER FOR CORRECTTING CONVERSION ERROR AND METHOD THE SAME

摘要

An AD converter and a method for correcting a conversion error are provided to output an accurate AD conversion result regardless of variation of a reference voltage by implementing an error correction processing based on a fixed input voltage. A method for correcting conversion error includes the steps of: receiving an input voltage from a predetermined circuit having an AD converter(S100); performing an AD conversion based on a predetermined reference voltage and data format(S104); determining whether the reference voltage is changed or not(S106); generating an error value by comparing the input voltage with the operating measurement value of the AD conversion based on the determined result(S112); and correcting a converting error by multiplying the operating measurement value of the AD conversion by a correction value corresponding to the error value(S114).