Abstract: An electronic device includes an output terminal, an output transistor having a control terminal and a conduction terminal coupled to the output terminal, and a resistor-capacitor (RC) compensation network configured to act on the control terminal of the output transistor. In addition, the electronic device includes a transconductance amplifier configured to drive the output terminal through the control terminal of the output transistor, and a Miller effect stage coupled to the RC compensation network and having an input port coupled to the transconductance amplifier and an output port coupled to the control terminal of the output transistor.

Abstract: An electronic device includes an output terminal, an output transistor having a control terminal and a conduction terminal coupled to the output terminal, and a resistor-capacitor (RC) compensation network configured to act on the control terminal of the output transistor. In addition, the electronic device includes a transconductance amplifier configured to drive the output terminal through the control terminal of the output transistor, and a Miller effect stage coupled to the RC compensation network and having an input port coupled to the transconductance amplifier and an output port coupled to the control terminal of the output transistor.

Abstract: The present invention concerns an audio amplifier circuit designed to provide an output signal to an audio transducer, said audio amplifier circuit comprising an audio power amplifier designed to receive an audio signal and designed to generate said output signal, a sensor designed to detect an audible sound having at least one noise component, to generate a detected signal. The audio amplifier circuit also includes a processing block configured to receive said detected signal at its input and to generate an off signal at its output, the latter being located at the input of said audio power amplifier. The processing block processes the detected signal according to said input signal to identify said noise component of said detected signal to generate a reference signal. The processing block generates the off signal when the value of said input signal is lower than the value of said reference signal.

Abstract: The present invention concerns an audio amplifier circuit designed to provide an output signal to an audio transducer, said audio amplifier circuit comprising an audio power amplifier designed to receive an audio signal and designed to generate said output signal, a sensor designed to detect an audible sound having at least one noise component, to generate a detected signal. The audio amplifier circuit also includes a processing block configured to receive said detected signal at its input and to generate an off signal at its output, the latter being located at the input of said audio power amplifier. The processing block processes the detected signal according to said input signal to identify said noise component of said detected signal to generate a reference signal. The processing block generates the off signal when the value of said input signal is lower than the value of said reference signal.