the present invention is related to a d / a conversion device , it is provided with a first d / a conversion circuit which receives input of digital data composed of plural bits and outputs a corresponding electric output signal , and a second d / a conversion circuit which receives input of a correction code for the digital data and which outputs a corresponding electric correction signal , wherein the first and second d / a conversion circuits are connected to each other at their respective output terminals so that the electric output signal is corrected by the electric correction signal . the d / a conversion device comprises : storing means 105 for storing correction codes each for one bit of the digital data , the correction codes being determined in correlation with the first d / a conversion circuit 11 ; and calculating means 107 for performing serial entry and addition of the correction codes each for one bit of the digital data , and outputting a correction code for all bits of the digital data .