Patent ID: 7978168

Claim:
A D/A converter for receiving a plurality of divisional voltages and converting a digital signal to an analog voltage with the divisional voltages, the D/A converter comprising: a selection circuit for receiving the divisional voltages and the digital signal to select one of the divisional voltages, the selection circuit including: a plurality of first switch circuits and a plurality of second switch circuits connected to the plurality of first switch circuits, wherein the second switch circuits include at least one voltage dividing switch circuit forming a voltage dividing circuit with the plurality of first switch circuits, and wherein the plurality of first switch circuits are selectively activated in response to the digital signal to select one of the divisional voltages, and wherein the plurality of second switch circuits function as a decode circuit in which the plurality of second switch circuits are selectively activated in response to the digital signal, with each of the second switch circuits being provided with a logic switch function and having an ON resistance when activated, and the at least one voltage dividing switch circuit further dividing the selected one of the divisional voltages with the ON resistance.