Patent ID: 8896473

Claim:
A digital-to analog-converter (DAC) comprising: an MSB resistor ladder comprising a plurality of series connected MSB resistors, wherein the MSB resistor ladder is coupled between a first and second reference potential; a partial LSB resistor ladder comprising a plurality of series connected resistors; and a plurality of switching units for connecting at least one of said series connected MSB resistors of the MSB resistor ladder with the partial LSB resistor ladder, wherein each switching unit comprises a first switch for connecting a first terminal of an associated MSB resistor with a first terminal of the partial LSB resistor ladder and a second switch for connecting a second terminal of the associated MSB resistor with a second terminal of the partial LSB resistor ladder and wherein a switch path of each switch is configured to form a resistor and wherein when said first and second switches are turned on, the first switch, the partial LSB resistor ladder and the second switch form an LSB resistor ladder connected in a parallel with the associated MSB resistor.