DDS_原理简介 Direct Digital Synthesizer ! "#$ % &'()(* )+,ROM)D/A-./012LPF3$DDS456 5789 51$1 DDS45 :;K)P)W)fC<?@AB CNNO=>P) =>W(PJ< ROMQRCSROMMTURCROM KDVWNSnXD/A-.YZ[StC\X]012 ^_P`H$ ROM;+ VWNC DDSH$ DDS J