Patent ID: 8125019

Claim:
A semiconductor device comprising: a resistor including: a single doped body within a substrate, the single doped body and the substrate having opposite doping types, wherein the substrate includes a p-type doped substrate region, and wherein the single doped body is doped n-type; a trapped charge region adjacent to and in direct contact with the single doped body, such that the single doped body of the resistor is substantially parallel with the trapped charge region, wherein the single doped body substantially separates the trapped charge region from the substrate; a source region and a drain region within the substrate, wherein the single doped body directly contacts the source region and the drain region within the substrate; wherein the trapped charge region is structured to control a resistance of the single doped body by varying an amount of trapped charge in the trapped charge region, and wherein the single doped body is permanently doped independent of the amount of trapped charge in the trapped charge region.