Appendixjapanese50m咸熟
japanese50m咸熟 时间:2021-01-11 阅读:()
1ApplicationNote1434Author:DavidCarr8-Bitto16-Bit,40MSPSto500MSPSADCEvaluationSystemTheIntersilKMB001evaluationsystemallowsuserstoevaluatetheIntersilportfoliooflow-power,8-bitto16-bit,high-performanceanalog-to-digitalconverters(ADC).
Theseconvertersrunatsamplingratesof40MSPSto500MSPSandaredesignedwiththeIntersilproprietaryFemtoChargetechnologyonastandardCMOSprocess.
TheKMB001evaluationsystemusestheIntersilKonverterAnalyzersoftware,whichdisplaysallpertinentdatasuchasSFDR,SINAD,ENOB,harmonics,current,andpowermeasurements.
Thesoftwarealsoplotsoutputsinfrequencyspectraandtimedomain.
Tobegintesting,simplyconnecttheinputsignal,samplingclock,andtargetcomputertothemotherboard,andsupplypower(Figure1).
Themotherboardprovidesappropriatesupplyvoltagesandcapturesdigitaldatafromthedaughtercard.
DaughtercardscontaintheADCsandattachdirectlytotheKMB001toformtheADCevaluationplatform(Figure2).
Toensureproperoperationofthesystem,itisrecommendedthatthemostcurrentsoftwareversionbeinstalled.
IfIntersilKonverterAnalyzerisalreadyinstalledonthemachine,itmustbeuninstalledpriortoinstallationofthelatestversion.
Features18MbFIFOcaptures1MADCoutputsamplesUSB2.
0interfaceforrapiddatatransferDatasheet-style,live-updateddisplayKMB001EvaluationSystemContentsTheKMB001isprovidedwithaUSBcabletoconnecttoaPCanda5Vpowersupply.
TheuserneedonlyprovidesignalandclocksourcesandaPCrunningtheMicrosoftWindowsXPorWindows2000operatingsystem.
IntersilKonverterAnalyzersoftwarecanbedownloadedfromtheIntersilwebsite.
FIGURE1.
EVALUATIONPLATFORM,SIGNALSOURCESANDPCFIGURE2.
EXAMPLEEVALUATIONPLATFORMCONNECTIONS(SHOWINGKDC2710DAUGHTERCARD)CAUTION:Thesedevicesaresensitivetoelectrostaticdischarge;followproperICHandlingProcedures.
CopyrightIntersilAmericasInc.
2011.
AllRightsReserved.
1-888-INTERSILor1-888-468-3774|Intersil(anddesign)isatrademarkownedbyIntersilCorporationoroneofitssubsidiaries.
Allothertrademarksmentionedarethepropertyoftheirrespectiveowners.
March31,2011AN1434.
4ApplicationNote14342AN1434.
4March31,2011SetupandOperationoftheADCEvaluationPlatformTosetuptheADCevaluationplatform,thefollowingitemsarerequired:1.
IntersilKMB001motherboard2.
USBcable(USB-AtoUSB-B,1.
25to2Mlong);suppliedwithKMB0013.
IntersildaughtercardcontainingADCtobetested4.
Suitablesignalandclocksources(seeAppendixAonpage6)5.
4Wminimum,5Vpowersupply(suppliedwithKMB001)6.
PCwithfreeUSB2.
0port,loggedinwithadministratorrights,andfulfillingthePCsystemrequirementsshowninTable1InstallingtheIntersilKonverterAnalyzerSoftwareIfanearlierversionoftheIntersilKonverterAnalyzersoftwareisinstalledonthePC,itmustberemovedbeforeanewversioncanbeinstalled.
Touninstallanearlierversion,clicktheWindowsStartmenu,andthenclickAllPrograms>IntersilKonverterAnalyzer>Uninstall.
Notethatthesoftwareversionnumberinthefollowingproceduresmaynotmatchthelatestversionbeinginstalled,buttheinstructionsarethesame.
ToinstalltheIntersilKonverterAnalyzerSoftware:1.
DownloadtheIntersilKonverterAnalyzerinstallationfilesfromtheIntersilwebsiteat:www.
intersil.
com/converters/adc_eval_platform/index.
asp2.
RunIntersilKonverterInstallerVX.
XX.
Xc.
exefortheversionyouwanttoinstall.
TheWelcometotheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindowopens.
3.
IntheWelcometotheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindow,clickNext.
TheLicenseAgreementwindowopens.
TABLE1.
PCSYSTEMREQUIREMENTSOPERATINGSYSTEMPROCESSORSRAMDISPLAYRESOLUTIONWindowsXPWindows2000IntelPentium(Pentium4andabove)IntelCeleronIntelXeonIntelCoreAMDAthlon64*AMDOpteronAMDSempron512MB(1024MBrecommended)800x600orhigher*ProcessormustsupportSSE2instructionset.
ApplicationNote14343AN1434.
4March31,20114.
IntheLicenseAgreementwindow,ifyouagreewiththeSoftwareEvaluationLicenseAgreement,clickIAgree.
TheChooseInstallLocationwindowopens.
5.
IntheChooseInstallLocationwindow,clickNext.
TheChooseStartMenuFolderwindowopens.
6.
IntheChooseStartMenuFolderwindow,clickInstall.
TheCompletingtheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindowopens.
7.
IntheCompletingtheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindow,clickFinish.
AnewshortcuticontotheIntersilKonverterAnalyzersoftwareappearsonthedesktop.
InstallingtheUSBDriverToinstalltheUSBdriver:1.
InstallthedaughtercardontotheKMB001motherboard.
Makesurethemezzanineconnectorisfirmlyseatedinthemotherboardsocket.
2.
SetandconnectthesignalsourcetotheanaloginputSMAconnector.
3.
SetandconnecttheclocksourcetotheclockinputSMAconnector.
4.
ConnecttheUSBcablefromtheKMB001tothetargetPC.
5.
Connect,thenactivate,the5VpowersupplytotheKMB001.
TheWelcometotheFoundNewHardwareWizardwindowopens.
6.
IntheWelcometotheFoundNewHardwareWizardwindow,clicktheNo,notthistimeradiobutton,andthenclickNext.
TheUSBsoftwareinstallationwindowopens.
ApplicationNote14344AN1434.
4March31,20117.
IntheUSBsoftwareinstallationwindow,clicktheInstallthesoftwareautomatically(Recommended)radiobutton,andthenclickNext.
TheHardwareInstallationwindowopens.
8.
IntheHardwareInstallationwindow,clickContinueAnyway.
TheCompletingtheFoundNewHardwareWizardwindowopens.
.
9.
IntheCompletingtheFoundNewHardwareWizardwindow,clickFinish.
TheADCevaluationsystemisnowconnectedtoyourPC.
InstallingtheMATLABComponentRuntimeIntersilKonverterAnalyzersoftwareversion1.
15.
6candearlieruseMATLABComponentRuntime(MCR)version7.
6,whileversion1.
20candlateruseMCRversion7.
13.
DownloadtheappropriateversionfromtheIntersilwebsiteandusethefollowingproceduretoinstallit.
BothversionscancoexistonthesamePC;therefore,oneversiondoesnothavetobeuninstalledfortheotherversiontoinstalled.
ToinstalltheMATLABcomponentruntime(MCR):1.
RuntheMCRversion7.
6orversion7.
13installerfromtheIntersilwebsiteat:www.
intersil.
com/converters/adc_eval_platform/index.
aspTheChooseSetupLanguagewindowopens.
2.
IntheChooseSetupLanguagewindow,usethedrop-downlisttochoosethedesiredsetuplanguage(EnglishorJapanese),andthenclickOK.
TheWelcometotheInstallShieldWizardforMATLABComponentRuntimeX.
Xwindowopens.
ApplicationNote14345AN1434.
4March31,20113.
IntheWelcometotheInstallShieldWizardforMATLABComponentRuntimeX.
Xwindow,clickNext.
TheCustomerInformationwindowopens.
4.
IntheCustomerInformationwindow,enteryourusernameandorganization(optional),andthenclickNext.
TheDestinationFolderwindowopens.
5.
IntheDestinationFolderwindow,clickNexttoacceptthedefaultdestinationfolder,orclickChangetoselectanotherfolder.
TheReadytoInstalltheProgramwindowopens.
6.
IntheReadytoInstalltheProgramwindow,clickInstall.
7.
IfthetargetPCdoesnothaveMicrosoft.
NETFramework2.
0installed,theMATLABComponentRuntimeX.
XInstallerInformationwindowopens,andamessageisdisplayedregardingtheMicrosoft.
NETFramework.
8.
The.
NETFrameworkisnotrequiredtoruntheIntersilKonverterAnalyzersoftware.
IntheMATLABComponentApplicationNote14346AN1434.
4March31,2011RuntimeX.
XInstallerInformationwindow,clickOK.
TheInstallShieldWizardCompletedwindowappears.
9.
IntheInstallShieldWizardCompletedwindow,clickFinish.
TheMATLABcomponentruntimeinstallationisnowcomplete.
RunningtheIntersilKonverterAnalyzerSoftwareToruntheIntersilKonverterAnalyzersoftware:1.
Onthedesktop,double-clicktheIntersilKonverterAnalyzershortcuticon.
Theapplicationuncompressesthefirsttimeitruns;subsequently,itstartsimmediately.
2.
IftheWelcometotheFoundNewHardwareWizardwindowopens,clicktheNo,notthistimeradiobuttonandthenclickNext.
3.
IftheHardwareInstallationwindowopens,clickContinueAnyway.
SpecificationsDefinitionsAnalogInputBandwidthistheanaloginputfrequencyatwhichthespectraloutputpoweratthefundamentalfrequency(asdeterminedbyFFTanalysis)isreducedby3dBfromitslow-frequencyvalue.
ThisisalsoreferredtoasFullPowerBandwidth.
ApertureDelayorSamplingDelayisthetimerequiredaftertheriseoftheclockinputforthesamplingswitchtoopen,atwhichtimethesignalisheldforconversion.
ApertureJitteristheRMSvariationinaperturedelayforasetofsamples.
ClockDutyCycleistheratioofthetimetheclockwaveisatlogichightothetotaltimeofoneclockperiod.
DifferentialNon-Linearity(DNL)isthedeviationofanycodewidthfromanideal1LSBstep.
EffectiveNumberofBits(ENOB)isanalternatemethodofspecifyingSignaltoNoise-and-DistortionRatio(SINAD).
IndB,itiscalculatedas:ENOB=(SINAD-1.
76)/6.
02IntegralNon-Linearity(INL)isthedeviationofeachindividualcodefromalinedrawnfromzero(1/2LSBbelowthefirstcodetransition)throughpositivefull-scale(1/2LSBabovethelastcodetransition).
Thedeviationofanygivencodefromthislineismeasuredfromthecenterofthatcode.
LeastSignificantBit(LSB)isthebitthathasthesmallestvalueorweightinadigitalword.
ItsvalueintermsofinputvoltageisVFS/2N-1whereNistheresolutioninbits.
MissingCodesareoutputcodesthatareskippedandwillneverappearattheADCoutput.
Thesecodescannotbereachedwithanyinputvalue.
MostSignificantBit(MSB)isthebitthathasthelargestvalueorweight.
ItsvalueintermsofinputvoltageisVFS/2.
PipelineDelayisthenumberofclockcyclesbetweentheinitiationofaconversionandtheappearanceofthedataattheoutputpins.
PowerSupplyRejectionRatio(PSRR)istheratioofachangeininputoffsetvoltagetoachangeinpowersupplyvoltage.
SignaltoNoise-and-Distortion(SINAD)istheratiooftheRMSsignalamplitudetotheRMSvalueofthesumofallotherspectralcomponentsbelowone-halftheclockfrequency,includingharmonicsbutexcludingDC.
Signal-to-NoiseRatio(withoutHarmonics)istheratiooftheRMSsignalamplitudetothesumofallotherspectralcomponentsbelowone-halfthesamplingfrequency,excludingharmonicsandDC.
Spurious-Free-DynamicRange(SFDR)istheratiooftheRMSsignalamplitudetotheRMSvalueofthepeakspuriousspectralcomponent.
Thepeakspuriousspectralcomponentmayormaynotbeaharmonic.
AppendixASourceRequirementsSourcejitterandnoisewilldegradeperformance.
Forbesttestresults,acombinedjitter(forbothclockandsignalsources)thatdoesnotexceed200fsisrecommended.
SampleClockandInputSignalSourceSetupSampleclocksettings:50MHzto500MHzsine,+10dBmSignalsettings:0.
4MHzto250MHz,+7dBmto+10dBm(dependingonanaloginputattenuation)ApplicationNote14347IntersilCorporationreservestherighttomakechangesincircuitdesign,softwareand/orspecificationsatanytimewithoutnotice.
Accordingly,thereaderiscautionedtoverifythattheApplicationNoteorTechnicalBriefiscurrentbeforeproceeding.
ForinformationregardingIntersilCorporationanditsproducts,seewww.
intersil.
comAN1434.
4March31,2011RevisionHistoryDATEREVISIONCHANGE3/17/11AN1434.
4ConvertedtolatestIntersildocumenttemplate.
Page1:changedtitlefrom"8-Bitto14-Bit,40MSPSto500MSPSADCEvaluationSystem"to"8-Bitto16-Bit,40MSPSto500MSPSADCEvaluationSystem"Page1,para1,line2:changed"14-bit"to"16-bit"Page2,Table1:Under"OperatingSystem"changed"WindowsServer2003"to"Windows2000"andremovedallServicePackinformationforbothWindowsXPandWindows2000.
9/22/10AN1434.
3Page1:AddedreferencestotwodistinctsoftwareversionsandinstallationsinstructionsPage5:UpdatedKonverterversion1.
18cto1.
20c,MCRversion7.
10to7.
132/4/10AN1434.
2ConvertedtolatestIntersildocumenttemplate.
Changedtitlefrom"8-Bitto14-Bit,40MSPSto500MSPSADCEvaluationMotherboard"to"8-Bitto14-Bit,40MSPSto500MSPSADCEvaluationSystem"Page1:UpdatedDescription,removedDevicesSupportedparagraphPage2:AddedUSB2.
0requirementPage3:Addeduninstallrequirement/instructionsPage4:AddeddescriptionofMCR7.
6/7.
10Page6:RemovedAppendixB
Theseconvertersrunatsamplingratesof40MSPSto500MSPSandaredesignedwiththeIntersilproprietaryFemtoChargetechnologyonastandardCMOSprocess.
TheKMB001evaluationsystemusestheIntersilKonverterAnalyzersoftware,whichdisplaysallpertinentdatasuchasSFDR,SINAD,ENOB,harmonics,current,andpowermeasurements.
Thesoftwarealsoplotsoutputsinfrequencyspectraandtimedomain.
Tobegintesting,simplyconnecttheinputsignal,samplingclock,andtargetcomputertothemotherboard,andsupplypower(Figure1).
Themotherboardprovidesappropriatesupplyvoltagesandcapturesdigitaldatafromthedaughtercard.
DaughtercardscontaintheADCsandattachdirectlytotheKMB001toformtheADCevaluationplatform(Figure2).
Toensureproperoperationofthesystem,itisrecommendedthatthemostcurrentsoftwareversionbeinstalled.
IfIntersilKonverterAnalyzerisalreadyinstalledonthemachine,itmustbeuninstalledpriortoinstallationofthelatestversion.
Features18MbFIFOcaptures1MADCoutputsamplesUSB2.
0interfaceforrapiddatatransferDatasheet-style,live-updateddisplayKMB001EvaluationSystemContentsTheKMB001isprovidedwithaUSBcabletoconnecttoaPCanda5Vpowersupply.
TheuserneedonlyprovidesignalandclocksourcesandaPCrunningtheMicrosoftWindowsXPorWindows2000operatingsystem.
IntersilKonverterAnalyzersoftwarecanbedownloadedfromtheIntersilwebsite.
FIGURE1.
EVALUATIONPLATFORM,SIGNALSOURCESANDPCFIGURE2.
EXAMPLEEVALUATIONPLATFORMCONNECTIONS(SHOWINGKDC2710DAUGHTERCARD)CAUTION:Thesedevicesaresensitivetoelectrostaticdischarge;followproperICHandlingProcedures.
CopyrightIntersilAmericasInc.
2011.
AllRightsReserved.
1-888-INTERSILor1-888-468-3774|Intersil(anddesign)isatrademarkownedbyIntersilCorporationoroneofitssubsidiaries.
Allothertrademarksmentionedarethepropertyoftheirrespectiveowners.
March31,2011AN1434.
4ApplicationNote14342AN1434.
4March31,2011SetupandOperationoftheADCEvaluationPlatformTosetuptheADCevaluationplatform,thefollowingitemsarerequired:1.
IntersilKMB001motherboard2.
USBcable(USB-AtoUSB-B,1.
25to2Mlong);suppliedwithKMB0013.
IntersildaughtercardcontainingADCtobetested4.
Suitablesignalandclocksources(seeAppendixAonpage6)5.
4Wminimum,5Vpowersupply(suppliedwithKMB001)6.
PCwithfreeUSB2.
0port,loggedinwithadministratorrights,andfulfillingthePCsystemrequirementsshowninTable1InstallingtheIntersilKonverterAnalyzerSoftwareIfanearlierversionoftheIntersilKonverterAnalyzersoftwareisinstalledonthePC,itmustberemovedbeforeanewversioncanbeinstalled.
Touninstallanearlierversion,clicktheWindowsStartmenu,andthenclickAllPrograms>IntersilKonverterAnalyzer>Uninstall.
Notethatthesoftwareversionnumberinthefollowingproceduresmaynotmatchthelatestversionbeinginstalled,buttheinstructionsarethesame.
ToinstalltheIntersilKonverterAnalyzerSoftware:1.
DownloadtheIntersilKonverterAnalyzerinstallationfilesfromtheIntersilwebsiteat:www.
intersil.
com/converters/adc_eval_platform/index.
asp2.
RunIntersilKonverterInstallerVX.
XX.
Xc.
exefortheversionyouwanttoinstall.
TheWelcometotheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindowopens.
3.
IntheWelcometotheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindow,clickNext.
TheLicenseAgreementwindowopens.
TABLE1.
PCSYSTEMREQUIREMENTSOPERATINGSYSTEMPROCESSORSRAMDISPLAYRESOLUTIONWindowsXPWindows2000IntelPentium(Pentium4andabove)IntelCeleronIntelXeonIntelCoreAMDAthlon64*AMDOpteronAMDSempron512MB(1024MBrecommended)800x600orhigher*ProcessormustsupportSSE2instructionset.
ApplicationNote14343AN1434.
4March31,20114.
IntheLicenseAgreementwindow,ifyouagreewiththeSoftwareEvaluationLicenseAgreement,clickIAgree.
TheChooseInstallLocationwindowopens.
5.
IntheChooseInstallLocationwindow,clickNext.
TheChooseStartMenuFolderwindowopens.
6.
IntheChooseStartMenuFolderwindow,clickInstall.
TheCompletingtheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindowopens.
7.
IntheCompletingtheIntersilKonverterAnalyzerX.
XX.
XSetupWizardwindow,clickFinish.
AnewshortcuticontotheIntersilKonverterAnalyzersoftwareappearsonthedesktop.
InstallingtheUSBDriverToinstalltheUSBdriver:1.
InstallthedaughtercardontotheKMB001motherboard.
Makesurethemezzanineconnectorisfirmlyseatedinthemotherboardsocket.
2.
SetandconnectthesignalsourcetotheanaloginputSMAconnector.
3.
SetandconnecttheclocksourcetotheclockinputSMAconnector.
4.
ConnecttheUSBcablefromtheKMB001tothetargetPC.
5.
Connect,thenactivate,the5VpowersupplytotheKMB001.
TheWelcometotheFoundNewHardwareWizardwindowopens.
6.
IntheWelcometotheFoundNewHardwareWizardwindow,clicktheNo,notthistimeradiobutton,andthenclickNext.
TheUSBsoftwareinstallationwindowopens.
ApplicationNote14344AN1434.
4March31,20117.
IntheUSBsoftwareinstallationwindow,clicktheInstallthesoftwareautomatically(Recommended)radiobutton,andthenclickNext.
TheHardwareInstallationwindowopens.
8.
IntheHardwareInstallationwindow,clickContinueAnyway.
TheCompletingtheFoundNewHardwareWizardwindowopens.
.
9.
IntheCompletingtheFoundNewHardwareWizardwindow,clickFinish.
TheADCevaluationsystemisnowconnectedtoyourPC.
InstallingtheMATLABComponentRuntimeIntersilKonverterAnalyzersoftwareversion1.
15.
6candearlieruseMATLABComponentRuntime(MCR)version7.
6,whileversion1.
20candlateruseMCRversion7.
13.
DownloadtheappropriateversionfromtheIntersilwebsiteandusethefollowingproceduretoinstallit.
BothversionscancoexistonthesamePC;therefore,oneversiondoesnothavetobeuninstalledfortheotherversiontoinstalled.
ToinstalltheMATLABcomponentruntime(MCR):1.
RuntheMCRversion7.
6orversion7.
13installerfromtheIntersilwebsiteat:www.
intersil.
com/converters/adc_eval_platform/index.
aspTheChooseSetupLanguagewindowopens.
2.
IntheChooseSetupLanguagewindow,usethedrop-downlisttochoosethedesiredsetuplanguage(EnglishorJapanese),andthenclickOK.
TheWelcometotheInstallShieldWizardforMATLABComponentRuntimeX.
Xwindowopens.
ApplicationNote14345AN1434.
4March31,20113.
IntheWelcometotheInstallShieldWizardforMATLABComponentRuntimeX.
Xwindow,clickNext.
TheCustomerInformationwindowopens.
4.
IntheCustomerInformationwindow,enteryourusernameandorganization(optional),andthenclickNext.
TheDestinationFolderwindowopens.
5.
IntheDestinationFolderwindow,clickNexttoacceptthedefaultdestinationfolder,orclickChangetoselectanotherfolder.
TheReadytoInstalltheProgramwindowopens.
6.
IntheReadytoInstalltheProgramwindow,clickInstall.
7.
IfthetargetPCdoesnothaveMicrosoft.
NETFramework2.
0installed,theMATLABComponentRuntimeX.
XInstallerInformationwindowopens,andamessageisdisplayedregardingtheMicrosoft.
NETFramework.
8.
The.
NETFrameworkisnotrequiredtoruntheIntersilKonverterAnalyzersoftware.
IntheMATLABComponentApplicationNote14346AN1434.
4March31,2011RuntimeX.
XInstallerInformationwindow,clickOK.
TheInstallShieldWizardCompletedwindowappears.
9.
IntheInstallShieldWizardCompletedwindow,clickFinish.
TheMATLABcomponentruntimeinstallationisnowcomplete.
RunningtheIntersilKonverterAnalyzerSoftwareToruntheIntersilKonverterAnalyzersoftware:1.
Onthedesktop,double-clicktheIntersilKonverterAnalyzershortcuticon.
Theapplicationuncompressesthefirsttimeitruns;subsequently,itstartsimmediately.
2.
IftheWelcometotheFoundNewHardwareWizardwindowopens,clicktheNo,notthistimeradiobuttonandthenclickNext.
3.
IftheHardwareInstallationwindowopens,clickContinueAnyway.
SpecificationsDefinitionsAnalogInputBandwidthistheanaloginputfrequencyatwhichthespectraloutputpoweratthefundamentalfrequency(asdeterminedbyFFTanalysis)isreducedby3dBfromitslow-frequencyvalue.
ThisisalsoreferredtoasFullPowerBandwidth.
ApertureDelayorSamplingDelayisthetimerequiredaftertheriseoftheclockinputforthesamplingswitchtoopen,atwhichtimethesignalisheldforconversion.
ApertureJitteristheRMSvariationinaperturedelayforasetofsamples.
ClockDutyCycleistheratioofthetimetheclockwaveisatlogichightothetotaltimeofoneclockperiod.
DifferentialNon-Linearity(DNL)isthedeviationofanycodewidthfromanideal1LSBstep.
EffectiveNumberofBits(ENOB)isanalternatemethodofspecifyingSignaltoNoise-and-DistortionRatio(SINAD).
IndB,itiscalculatedas:ENOB=(SINAD-1.
76)/6.
02IntegralNon-Linearity(INL)isthedeviationofeachindividualcodefromalinedrawnfromzero(1/2LSBbelowthefirstcodetransition)throughpositivefull-scale(1/2LSBabovethelastcodetransition).
Thedeviationofanygivencodefromthislineismeasuredfromthecenterofthatcode.
LeastSignificantBit(LSB)isthebitthathasthesmallestvalueorweightinadigitalword.
ItsvalueintermsofinputvoltageisVFS/2N-1whereNistheresolutioninbits.
MissingCodesareoutputcodesthatareskippedandwillneverappearattheADCoutput.
Thesecodescannotbereachedwithanyinputvalue.
MostSignificantBit(MSB)isthebitthathasthelargestvalueorweight.
ItsvalueintermsofinputvoltageisVFS/2.
PipelineDelayisthenumberofclockcyclesbetweentheinitiationofaconversionandtheappearanceofthedataattheoutputpins.
PowerSupplyRejectionRatio(PSRR)istheratioofachangeininputoffsetvoltagetoachangeinpowersupplyvoltage.
SignaltoNoise-and-Distortion(SINAD)istheratiooftheRMSsignalamplitudetotheRMSvalueofthesumofallotherspectralcomponentsbelowone-halftheclockfrequency,includingharmonicsbutexcludingDC.
Signal-to-NoiseRatio(withoutHarmonics)istheratiooftheRMSsignalamplitudetothesumofallotherspectralcomponentsbelowone-halfthesamplingfrequency,excludingharmonicsandDC.
Spurious-Free-DynamicRange(SFDR)istheratiooftheRMSsignalamplitudetotheRMSvalueofthepeakspuriousspectralcomponent.
Thepeakspuriousspectralcomponentmayormaynotbeaharmonic.
AppendixASourceRequirementsSourcejitterandnoisewilldegradeperformance.
Forbesttestresults,acombinedjitter(forbothclockandsignalsources)thatdoesnotexceed200fsisrecommended.
SampleClockandInputSignalSourceSetupSampleclocksettings:50MHzto500MHzsine,+10dBmSignalsettings:0.
4MHzto250MHz,+7dBmto+10dBm(dependingonanaloginputattenuation)ApplicationNote14347IntersilCorporationreservestherighttomakechangesincircuitdesign,softwareand/orspecificationsatanytimewithoutnotice.
Accordingly,thereaderiscautionedtoverifythattheApplicationNoteorTechnicalBriefiscurrentbeforeproceeding.
ForinformationregardingIntersilCorporationanditsproducts,seewww.
intersil.
comAN1434.
4March31,2011RevisionHistoryDATEREVISIONCHANGE3/17/11AN1434.
4ConvertedtolatestIntersildocumenttemplate.
Page1:changedtitlefrom"8-Bitto14-Bit,40MSPSto500MSPSADCEvaluationSystem"to"8-Bitto16-Bit,40MSPSto500MSPSADCEvaluationSystem"Page1,para1,line2:changed"14-bit"to"16-bit"Page2,Table1:Under"OperatingSystem"changed"WindowsServer2003"to"Windows2000"andremovedallServicePackinformationforbothWindowsXPandWindows2000.
9/22/10AN1434.
3Page1:AddedreferencestotwodistinctsoftwareversionsandinstallationsinstructionsPage5:UpdatedKonverterversion1.
18cto1.
20c,MCRversion7.
10to7.
132/4/10AN1434.
2ConvertedtolatestIntersildocumenttemplate.
Changedtitlefrom"8-Bitto14-Bit,40MSPSto500MSPSADCEvaluationMotherboard"to"8-Bitto14-Bit,40MSPSto500MSPSADCEvaluationSystem"Page1:UpdatedDescription,removedDevicesSupportedparagraphPage2:AddedUSB2.
0requirementPage3:Addeduninstallrequirement/instructionsPage4:AddeddescriptionofMCR7.
6/7.
10Page6:RemovedAppendixB
- Appendixjapanese50m咸熟相关文档
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- SiYmRnjapanese50m咸熟
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- loadedjapanese50m咸熟
- 中国药物警戒第
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