Patent ID: 8514120

Claim:
An apparatus comprising: a plurality of resistors arranged in an array having a plurality of columns and a plurality of rows, and wherein the plurality of resistors are coupled together in a skip-K pattern to form a resistor string; a first set of switches, wherein each switch from the first set of switches is coupled to the resistor string; and a second set of switches, wherein each switch from the second set of switches is coupled to the resistor string, and wherein the first and second sets of switches are each arranged in a sequence and are offset from one another by an offset value, and wherein the first and second sets of switches are arranged along the periphery of the array such that each switch from the first set of switches is located in proximity to and is associated with the same row or the same column as its corresponding switch in the sequence from the second set of switches, and wherein the number of resistors is at least one of an integer multiple of at least one of the number of columns and the number of rows or a fraction of the offset value.