AMPLIFIER CIRCUIT WITH AN OUTPUT LIMITER

An amplifier circuit comprising: an amplifier; an output limiter (101) for providing a variable impedance comprising: a first and second limiter terminal; a transistor (105) comprising a conduction channel; a first resistor (106) coupled in parallel with the conduction channel; and a capacitor (110) coupled in series with the conduction channel between the conduction channel and the first or second limiter terminal; and a feedback control unit (108) comprising a comparator block (115) configured to provide a control signal to the output limiter based on a comparison of the amplifier output signal and a setting voltage; wherein: the first limiter terminal is coupled to the amplifier input or output; the second limiter terminal receives a reference voltage; and wherein receipt of the control signal at the transistor (105) provides for a variable impedance for the amplifier circuit dependent on the amplifier output signal.