CPC H03M 1/785 (2013.01) [H03M 1/76 (2013.01)] | 7 Claims |
1. A digital-to-analog converter (DAC) circuit, comprising:
a resistor ladder including a plurality of stages, one of the stages including a first resistor and a second resistor;
a switch including a third transistor coupled to one of the first and second resistors; and
a control circuit operable to adjust an on-resistance of the transistor, such that a sum of the resistances of the first and second resistors and the on resistance is equal to a predetermined amount,
wherein the switch includes the first transistor, the control circuit including the second transistor, such that the third resistor is connected in series with the second resistor, the third resistor having a resistance corresponding to a resistance of the first resistor.
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