A current mirror includes at least a first and a second mirror transistors inserted between a first and a second voltage reference and connected to an input terminal and to an output terminal of the current mirror, respectively. The current mirror further includes a base current compensation block inserted between the input terminal and common control terminals of the first and second mirror transistors and connected to a voltage reference. The base current compensation block at least includes a bias current generator of a bias current and a first compensation transistor inserted, in series to each other, between the voltage reference and the input terminal, and a second compensation transistor inserted between the voltage reference and the common control terminals of the mirror transistors and having a control terminal connected to a control terminal of the first compensation transistor.