Patent ID: 9159646
Filing Date: 2015-10-13
Classification: G01R,H01L

Abstract:
1. An apparatus comprising: an input pad; an output pad; a wire, coupled to the input pad and the output pad, the wire positioned at a periphery of a semiconductor die, the wire extending substantially along a perimeter of the semiconductor die; and a plurality of sets of devices coupled to various sections of the wire at a plurality of locations along the perimeter of the semiconductor die and surrounding the semiconductor die, wherein the plurality of sets of devices comprise: a first set of diodes coupled to a first section of the wire at a first location along the perimeter of the semiconductor die and a ground node; a second set of diodes coupled to a second section of the wire at a second location along the perimeter of the semiconductor die and the ground node; and a third set of diodes coupled to a third section of the wire at a third location along the perimeter of the semiconductor die and the ground node, wherein the first set of diodes to turn on in forward bias at a voltage higher than a voltage to turn on the second set of diodes.