放大直接数字频率合成的DAC选型器应用漫谈 AN-237 0/&5&$)/0-0(:8":t10#09t/03800% ."44"$)64&554t %"$ ǖ%BWJE#VDIBOBO fafcfa (DDS) ǖ / ǖN (DAC)DDS DDSDDS 1ǖ DAC (DAC) DAC Δ Phase %%4 1 0 0 1 2π ǖ(Δ Phase)(fc) . DDS Rev. 0 | Page 1 of 17 AN-237 ……