An amplifier circuit, comprising: an input amplification stage including a first operational amplifier with a first differential input and a first output; and further including a second operational amplifier with a second differential input and a second output, wherein a non-inverting input of the first differential input of the first operational amplifier is connected to an inverting input of the second differential input of the second operational amplifier and is designed to receive an input voltage (V L), and an inverting input of the first differential input of the first operational amplifier is connected to a non-inverting input of the second differential input of the second operational amplifier and is designed to receive a feedback voltage (V R); an output amplification stage, which has a first input and a second input that are connected to a respective output of the first and second outputs (4c, 4d) of the first and second operational amplifiers (10, 11) of the input amplification stage, and is designed to supply at an output an output voltage (V out) linked to the input voltage (V L) by an amplification factor (β); and a feedback stage, which is connected to the output of the output amplification stage and is designed to generate the feedback voltage (V R) as a function of the output voltage (V out), characterized by comprising a common-mode control stage, which is connected to the first and second outputs (4c, 4d) of the first and second operational amplifiers (10, 11) of the input amplification stage for receiving a first differential voltage (V 1) and a second differential voltage (V 2), respectively, and is configured to implement a comparison of the first differential voltage (V 1) and, respectively, the second differential voltage (V 2), with a reference voltage (V CMref), and to force a respective regulation current (I 1, I 2) of first and second current generators (24, 25) connected to a respective input of the first and second inputs (6a, 6b) of the output amplification stage, with a regulation current value which is a function of an outcome of the respective comparison, in order to compensate a simultaneous increase of said first differential voltage (V 1) and said second differential voltage (V 2). an input amplification stage including a first operational amplifier with a first differential input and a first output; and further including a second operational amplifier with a second differential input and a second output, wherein a non-inverting input of the first differential input of the first operational amplifier is connected to an inverting input of the second differential input of the second operational amplifier and is designed to receive an input voltage (V L), and an inverting input of the first differential input of the first operational amplifier is connected to a non-inverting input of the second differential input of the second operational amplifier and is designed to receive a feedback voltage (V R); an output amplification stage, which has a first input and a second input that are connected to a respective output of the first and second outputs (4c, 4d) of the first and second operational amplifiers (10, 11) of the input amplification stage, and is designed to supply at an output an output voltage (V out) linked to the input voltage (V L) by an amplification factor (β); and a feedback stage, which is connected to the output of the output amplification stage and is designed to generate the feedback voltage (V R) as a function of the output voltage (V out), characterized by comprising a common-mode control stage, which is connected to the first and second outputs (4c, 4d) of the first and second operational amplifiers (10, 11) of the input amplification stage for receiving a first differential voltage (V 1) and a second differential voltage (V 2), respectively, and is configured to implement a comparison of the first differential voltage (V 1) and, respectively, the second differential voltage (V 2), with a reference voltage (V CMref), and to force a respective regulation current (I 1, I 2) of first and second current generators (24, 25) connected to a respective input of the first and second inputs (6a, 6b) of the output amplification stage, with a regulation current value which is a function of an outcome of the respective comparison, in order to compensate a simultaneous increase of said first differential voltage (V 1) and said second differential voltage (V 2).