Patent ID: 7888975

Claim:
A line driver comprising a first driver subcircuit, the first driver subcircuit comprising a first output node configured to drive a first terminal of a load, and a first plurality of switchable resistance elements, the first plurality of switchable resistance elements grouped into a first and a second group of switchable resistance elements, wherein, in a first partial drive strength configuration, each switchable resistance element in the first group has a resistor that is coupled to a first bias voltage terminal and each switchable resistance element in the second group has a resistor that is coupled to a second bias voltage terminal to drive the load with a first signal sense and a partial drive strength, the partial drive strength being less than 100% of a full output voltage drive strength, and wherein, in a second partial drive strength configuration, each element of the first and second groups has a resistor that is coupled to the second bias voltage terminal to drive the load with a second signal sense and the partial drive strength, the second signal sense opposite the first signal sense.