Patent ID: 8378870

Claim:
A DAC (Digital to Analog Converter) for converting a digital signal that is an input signal, into an analog signal, the DAC comprising: a switch bank to which at least two reference signals are inputted, which includes a plurality of switches for selecting any of the reference signals, and which outputs the selected reference signal through a plurality of paths; a memory in which a history of previously selected switches among the plurality of switches and previous sample values of the input signal are stored; and an amplitude-phase control section to which the input signal is inputted and which controls the switches of the switch bank on the basis of the input signal, wherein the amplitude-phase control section refers to the memory and controls the switches of the switch bank in accordance with the history of the previously selected switches and a change of a current sample value of the input signal from a sample value that is a predetermined time ago, in order to select any of the at least two reference signals.