Patent ID: 8648660

Claim:
An amplifier with a non-linear current mirror, comprising: an amplification stage having an input terminal for an input signal; an output stage coupled to the amplification stage by a current mirror stage, wherein the current mirror stage comprises: at least one mirror transistor coupled to the amplifier stage; at least one output transistors coupled to the output stage, and at least two variable resistive elements, wherein each of the at least two variable resistive elements comprises a field-effect transistor, wherein a controlled section of the field-effect transistor of one of the resistive elements is connected in series between the at least one mirror transistor and a reference potential terminal, and wherein a controlled section of the field-effect transistor of another one of the resistive elements is connected in series between the at least one output transistor and the reference potential terminal; and a tuning stage being adapted to tune the variable resistive elements in response to the input signal and being commonly connected to gate terminals of the field-effect transistors of the resistive elements.