Digital amplifier for digital input signals, has digital-analog converter to exchange digital input signal in discrete and temporal analog signal whose amplitude disturbances are eliminated by upstream stage having smooth voltage supply

摘要

The digital amplifier has digital-analog converter to exchange digital input signal in discrete and temporal analog signal whose amplitude disturbances are eliminated by an upstream stage having a smooth voltage supply. A subtractor subtracts a feedback signal from the signal emitted by the upstream stage to generate a differential signal. A feedback filter is used to filter reinforced differential signal to generate the feedback signal and an output filter is used to filter the reinforced differential signal to generate an analog output signal of the digital amplifier. An independent claim is also included for an amplifying method for a digital input signal comprising a digital-analog converter to exchange digital input signal in discrete and temporal analog signal.