Patent ID: 6297685
Filing Date: 2001-10-02
Classification: H03K

Abstract:
A circuit arrangement comprising:a differential amplifier including a first signal input, a second signal input, a first signal output, a second signal output, a first supply input, and a second supply input, the differential amplifier configured to amplify a differential signal provided at the first and second signal inputs; anda voltage compensator coupled to the first supply input, the voltage compensator comprising:a compensation transistor having a base, an emitter, and a collector, the collector coupled to the first supply input of the differential amplifier;a first compensation resistor coupled between a voltage source and the collector of the compensation transistor;a second compensation resistor coupled between the emitter of the compensation transistor and ground;a third compensation resistor coupled between the voltage source and the base of the compensation transistor; anda fourth compensation resistor coupled between the base of the compensation transistor and ground.