DSP中的DAC.pdf

嵌入式硬件设计参考系列之DSP中的DAC.pdfDACSFORDSPAPPLICATIONSSECTION4DACsFORDSPAPPLICATIONSIDACStructuresILowDistortionDACArchitecturesIDACLogicISigma-DeltaDACsIDirectDigitalSynthesis(DDS)4.aDACSFORDSPAPPLICATIONS4.bDACSFORDSPAPPLICATIONSSECTION4DACsFORDSPAPPLICATIONSWaltKester,JamesBryantDACSTRUCTURESThemostcommonlyusedDACstructures(otherthanasimple1-bitDACbasedonasingleswitchusedwithareferencevoltage)arebinaryweightedDACsorladdernetworks,butthese,thoughrelativelysimpleinstructure,requirequitecomplexanalysis.Wewillstartbyexaminingoneofthesimpleststructuresof