The present invention provides a DAC (Digital to Analog Converter) capable of generating a transfer function having a notch for reducing an error signal level in a desired frequency band.The DAC of the present invention includes a switch bank to which at least two reference signals are inputted and which selects any of these signals and outputs the selected signal through a plurality of paths, and an amplitude-phase control section which controls a reference signal selection operation of the switch bank on the basis of an input signal.