Patent ID: 7365556

Claim:
An apparatus, comprising: a source pad capable of sourcing a current; a sink pad capable of sinking a current; a plurality of components-under-test (CUT) disposed in a serial chain between the current source pad and the current sink pad, the serial chain including at least one intermediate node between adjacent CUT; a plurality of pass gates, each pass gate having a first terminal, a second terminal and a control terminal controlling whether the first and second terminal are electrically closed or electrically open, the first terminal of a first pass gate connected to the source pad, the first terminal of a last pass gate connected to the sink pad, the first terminal of each of at least one intermediate pass gate connected to a corresponding intermediate node; an output pad connected to the second terminal of each of the plurality of pass gates; and a control coupled to the control terminal of each of the plurality of pass gates, wherein the control is capable of closing and opening the pass gates to allow determination of a voltage across each of the CUT.