Patent ID: 8847655

Claim:
A semiconductor device comprising: an array of switching elements, comprising a first set of switching elements and a second set of switching elements, a switching element of the first set of switching elements having a different electrical resistance than a switching element of the second set of switching elements; and at least one controller electrically connected to the array of switching elements, the controller configured to generate at least one coarse tuning signal, a first fine tuning signal, and a second fine tuning signal, wherein the array of switching elements is configured to alter an electrical resistance of the array of switching elements in response to the at least one coarse tuning signal, the first fine tuning signal, and the second fine tuning signal; the first set of switching elements is configured to be controlled based on a logical value of the first fine tuning signal; the second set of switching elements is configured to be controlled based on a logical value of the second fine tuning signal; and a corresponding one of the first set of switching elements and a corresponding one of the second set of switching elements are configured to be controlled based on a logical value of the at least one coarse tuning signal.