Patent ID: 8004353

Claim:
A circuit comprising: a control circuit; and a differential amplifier comprising: a first amplifier transistor configured to amplify an input signal of the differential amplifier, the first amplifier transistor being connectable in a first branch of the differential amplifier; a second amplifier transistor configured to amplify the input signal of the differential amplifier, the second amplifier transistor being connectable in a second branch of the differential amplifier; at least one first series connection having a first transistor and a first semiconductor switch, the first series connection being connected in parallel to the first amplifier transistor; and at least one second series connection having a second transistor and a second semiconductor switch, the second series connection being connected in parallel to the second amplifier transistor, wherein the control circuit is connectable to switch inputs of the first and second semiconductor switches, wherein the control circuit is configured to control switching states of the first and second semiconductor switches, and wherein the control circuit is configured to adjust an offset output voltage of the differential amplifier by a control of the switching states of the first and second semiconductor switches.