Patent ID: 8648425

Claim:
A device comprising: a metal-oxide-semiconductor (MOS) device comprising: a gate electrode; and a first source/drain region adjacent the gate electrode; and a first and a second contact plug directly over and electrically connected to two portions of a same MOS component, wherein the same MOS component is the first source/drain region, wherein the same MOS component is configured to be used as a resistor that is formed between the first and the second contact plugs, and wherein the first and the second contact plugs are configured to be at different voltage levels; a second source/drain region adjacent the gate electrode, wherein the first and the second source/drain regions are on opposite sides of the gate electrode; and a third and a fourth contact plug directly over and electrically connected to opposite ends of the second source/drain region, wherein the second and the third contact plugs are interconnected through a metal line, and wherein the first and the second source/drain regions form two serially connected resistors that are connected between the first and the fourth contact plugs.