Audio device output stage standbying method, involves reducing polarization current of output stage to low consumption operating point so that output of output stage remains at continuous voltage near to common mode voltage

摘要

The method involves receiving high voltage (VDDA), low voltage (VSSA), and a common mode voltage (VCM), and interrupting audio signals at an input of an output stage (5). Polarization current (IBIASC) of the output stage is reduced to a low consumption operating point, so that the output (VOUT) of the output stage remains at a continuous voltage near to the common mode voltage. The polarization current of the output stage is increased to normal polarization current (IBIASN). An audio signal is provided at the input of the output stage. An independent claim is also included for an audio device comprising an output stage.