嵌入式硬件设计参考系列之DSP中的DAC.pdf DACS FOR DSP APPLICATIONS SECTION 4 DACs FOR DSP APPLICATIONS I DAC Structures I Low Distortion DAC Architectures I DAC Logic I Sigma-Delta DACs I Direct Digital Synthesis (DDS) 4.a DACS FOR DSP APPLICATIONS 4.b DACS FOR DSP APPLICATIONS SECTION 4 DACs FOR DSP APPLICATIONS Walt Kester, James Bryant DAC STRUCTURES The most commonly used DAC structures (other than a simple 1-bit DAC based on a single switch used with a reference voltage) are binary weighted DACs or ladder networks, but these, though relatively simple in structure, require quite complex analysis. We will start by examining one of the simplest structures of……