Telecommunication circuit and a telecommunication device

摘要

An interface circuit has a circuit input. The circuit has a first controlled amplifier combined with an at least resistive element. The first amplifier provides at a first output a first output current dependent on a voltage of the circuit input. The circuit also has a second controlled current amplifier. The second amplifier provides at a second output a second output current dependent on a current of the circuit input. The second output is coupled to the first output. The circuit further comprises a third controlled current with a third input. The third input is coupled to the first and second outputs.