AUDIO AMPLIFIER AND SPEAKER INCORPORATING AUDIO AMPLIFIER

摘要

The invention provides an audio amplifier that includes an input terminal for receiving an input signal, an output terminal, a regulator reference generator coupled to the input terminal, wherein the regulator reference generator provides a voltage regulator reference corresponding to the input signal; a voltage regulator coupled tot he regulator reference generator, wherein the voltage regulator provides a power signal corresponding to the voltage regulator reference; a compensation block coupled to the input terminal to provide a modulation control signal based on the input signal; a modulator coupled to the compensation block wherein the modulator provides a modulated signal in response to the modulation control signal; and an output stage coupled to the modulator and the voltage regulator, wherein the output stage provides an output signal at the output terminal by combining the modulated signal and the power signal. In another aspect, speakers are provided having improved physical safety isolation.