Patent ID: 6025703
Filing Date: 2000-02-15
Classification: G05F

Abstract:
Electric circuit (100, 200) for eliminating an influence of a voltage drop (DV) between a first connection point (11) on an electric conductor (10) and a second connection point (12) on the conductor (10), said second connection point (12) being connected to a first terminal (21) of an integrated circuit (20), the electric circuit (100, 200) comprising:a differential amplifier (106), said differential amplifier (106) having a first input terminal (103, 108) connected to a reference potential (303), and an output terminal (109) connected to the first connection point (11) on the conductor (10), anda feedback network connected to at least a second input terminal (104, 107) of the differential amplifier (106) and to the integrated circuit (20) for compensation of said voltage drop (DV),wherein said first input terminal (108) is an inverting input terminal (108) of the differential amplifier (106), andwherein said feedback network comprises:a first feedback connection (53) between a non-inverting input terminal (107) of the differential amplifier (106) and the first input terminal (21) of the integrated circuit (20) via the conductor (10),an output impedance unit (54) connected between the output terminal (109) of the differential amplifier (106) and the first connection point (11) on the conductor, anda second feedback impedance unit (56) connected between the inverting input terminal (108) of the differential amplifier (106) and the output terminal (109) of the differential amplifier (106).