AD与DA转换技术1-pdf

11AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004A/DD/A22AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004A/DD/A„„„„A/D„(flash)A/D„(twostep)A/D„(interpolating)(folding)A/D„(pipelined)A/D„(successiveapproximation)A/D„(interleaved)A/D„Σ∆oversamplingA/D„D/A„D/A„calibrationD/A33AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,20041.——„——theworldisbecomingmoredigitaleveryday„„„CAD44AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„„„„1.——55AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„——„„ADC„DACA/DD/ADSP1.——66AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„„CDHDTV„10bit,HDTV:70MHz12~14bit10bit,HDTV:70MHz12~14bit1.——77AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„„2.88AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„„VLSI„VLSI„2.99AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,20043.„„„3.A/DD/A1010AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004A/DD/A„„„„A/D„(flash)A/D„(twostep)A/D„(interpolating)(folding)A/D„(pipelined)A/D„(successiveapproximation)A/D„(interleaved)A/D„Σ∆oversamplingA/D„D/A„D/A„calibrationD/A1111AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,20041.A/D„„„„„„„A-D-vinDfS1212AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„A/D„D=f(A)]2[REFmVAD•=A/D/234567vin001010011100101110111D234567vina/b1313AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004A/D/35791113vin001010011100101110111Da/b222222235791113222222222012122/2/22∆=∆=∫∆∆−qqqdεεε:SNRP=6.02m+1.76dB1414AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„Nyquist3400Hz8kHz„„1515AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004:„n„(DNL)1LSB.B’A/DBAABDNL1LSBINLA/D1616AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004:„(INL)/.„(offset)AB.„gainerror)AB.B’A/DBAABDNL1LSBINLA/D1717AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004:„(SNR)()„(SNDR),.„(ENOB):SNDRPSNDR.„SNR=0dB02.676.1−=pSNDRENOBA/D1818AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„„NyquistA/D„A/D„„A/D„A/D„„„„A/D1919AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,20042.D/AD/AD/ADA2020AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004DIAREF•=mREFDVA2•=2.D/A(3bitD/A/00000101001110010111011123456702121AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„NDL„INL„offset„gainerror„SNDRsignal-to-(noise+distortion)ratioD/AD/AB’BAABDNL1LSBINLaDNLINLb2222AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„settlingtime„latencyDACD/AtvO0tsetD/Atset2323AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„D/A„D/A„D/AD/A2424AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,20041000010000100001n101110011000100001110010032102525AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004A/DD/A„„„„A/D„(flash)A/D„(twostep)A/D„(interpolating)(folding)A/D„(pipelined)A/D„(successiveapproximation)A/D„(interleaved)A/D„Σ∆oversamplingA/D„D/A„D/A„calibrationD/A2626AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004(flash)A/D1.C1C2CiCi+1C2n-1..................ViVi+1VREFVinA/D2727AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„-„„(2n-1)„dcacA/DV1V2Vout2828AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004DCIBDCACbowing2929AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004ac3030AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004CMOSflashacS1S2S3VrVinCCMOSA/D„S1S2S3VinC1„S3VinVr„VinVr∴AC3131AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004CinflashADC3232AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004kickbacknoise3333AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityFall,2004„„sparkleinthermometercodeVintVi+1Vit1t2abA/DCi-1CiCi+1Ci+2Ci-2..................ViVi+1VREFVin1Vi1Vi2Vi+210103434AdvancedAnalogIntegratedCircuitsDongmeiLiElectronicEngineeringDept.,TsinghuaUniversityF