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DAC,ADC(712000):EDA,,,DAC,ADC:DAC/ADC;Multisim;;:TP39119:A:10042373X(2006)232131203ExplorationinSimulationExperimentsofDACandADCCircuitsLUQinglin(ShaanxiPolytechnicInstitute,Xianyang,712000,China)Abstract:ItsanefficientwaytouseEDAtechniqueintheexplorationofsomecomplexexperiments,aswellasinrefor2mingtraditionaldigitalcircuitsandtheteachingmethodsofexperiments.Itcanalsohelpstudentstomasterandtobefamiliarwithadvancedexperimentmethodsandtechniqueofcircuits.Somepracticalexamplescomparingwithexperimentalresults,canmakestudentsmasterDACandADCcircuittheories.Capability,applianceandsometestmethodsinashorttime,whichareusedwidelyinpracticebutdonothavegoodresultsinsomehardwareexperiments.Keywords:DAC/ADC;Multisimsoftware;experimentsofcircuitsimulation;experimentresearch:20062052311D/AD/AD/AMultisim2001(EWB)1.1DAC(1)/(D/A)D/AD/A,DACDAC,DAC1,DAC,DACDAC,DAC0,DACDAC,0DAC,0DAC,0(2)D/A:UO=-VREF2nDn,UO:0-VREF2n(2n-1)(3)DAC,DAC,1ULSB1Um,:=ULSBUm=12n-1Um,n,(4)18DACDAC:DAC1(11111111),1k1,8,02558DAC05V,2558255,,DAC,/1D/A131200623238þü1.2(1)D/A1,DAC,10V,(01001001),,(2)D/A2,74LS163DAC,10V,DAC4,DAC41kHz,3,2D/A3D/A(3)D/A4,8DAC,1k()11k,DAC5V,DAC5V4D/A0255(Pattem,upcounter),,55D/A1.3(1)1:Uo=1028(01001001)2=1025673=21852V(2):DAC,,,(:5DACV/Div)2A/DA/D;A/D()2.1ADC(1)A/DA/D,,,,,(2),,,,A/DA/D(3),,,,1,,231:DAC,ADCADC,,110ADC,5V,112105V=4188mV;8ADC1285V=19153mV10ADC8ADC(4),A/D,A/D:(Dn)2=VIN2nVREF2.28ADC68ADC,/VREF+ADCVIN,1kHz,010VSOC1,ADC,EOC1OE,OE1,ADCOE5V,ADC:(1),;(2)RP1,RP2,,;(3)(OE),OE68ADC2.3A/D,D/A7A/D,D/A,A/D,D/A,,,(1);(2)A,B,87A/DD/A8A/D,D/A2.46,10110110=(182)10,:(Dn)2=VIN2nVREF=01528017l(182186)103A/D,,A/D,[1].Multisim2001[M].:,2002.[2].ElectronicsWorkbench[M].:,2001.[3].[M].:,2004.[4].[M].:,2005.,1963,,,331200623238þü