DEVICE HAVING A DELTA-SIGMA MODULATOR AND A SWITCHING AMPLIFIER CONNECTED THERETO

摘要

Disclosed is a digital-analog converter having a delta-sigma modulator (DSM) and a switching amplifier connected to said modulator. A series connection of a parallel-serial converter (PSC) and a downstream swap element (SHS) for the serial pulse width-modulated output signal ya2 of the parallel-serial converter (PSC) is connected to the multi-bit output of the delta-sigma modulator (DSM), and the swap element (SHS) swaps, based on the last bit value 0 or 1 of a preceding word in the resulting output signal ya3, the sequence of the binary zeros and ones of the current word (where present). 1-0 or 0-1 transitions are largely eliminated at the word boundaries.