Patent ID: 7969342

Claim:
A digital-to-analog converter comprising: a resistor string outputting a plurality of voltages from a plurality of taps, with a different voltage level for each tap, said resistor string being connected across a first voltage supply terminal and a second voltage supply terminal; a selection circuit that receives said plurality of voltages output from the plurality of taps of said resistor string and a digital signal and selects, in accordance to said digital signal, an output of two combination voltages selected from among said plurality of voltages; wherein said combination voltages are selected from among: a pair of two same voltages being output from a same tap of said resistor string; a pair of two voltages different from one another having voltage levels neighboring each other, being output from neighboring taps of said resistor string; and a pair of two voltages different from one another having voltage levels not-neighboring each other, being output from taps not-neighboring to one another of said resistor string; and a differential amplifier that receives said two voltages output from said selection circuit and outputs an intermediate voltage between said two voltages with amplification.