Semiconductor device comprising a field-effect transitor and method of operating the same

A semiconductor device comprising a semiconductor body which is provided with a field effect transistor at a surface and which comprises strongly doped source and drain zones and a channel region extending between the source zone and the drain zone, with a gate electrode being present which overlaps the channel region upon perpendicular projection thereon, wherein the source zone, the drain zone and the gate electrode are connected at the surface to a metal source contact, a drain contact and a gate electrode contact, respectively, and wherein a further metal strip is positioned between the gate electrode contact and the drain contact, which metal strip is insulated from the semiconductor body, is locally electrically connected to the source strip, and forms a shield between the gate electrode and the drain contact, characterized in that the electrical connection between the further metal strip and the source contact comprises a capacitor, and in that the further metal strip is provided with a connecting contact for applying an external voltage to the further metal strip.