LMH6559High-Speed,Closed-LoopBufferGeneralDescriptionTheLMH6559isahigh-speed,closed-loopbufferdesignedforapplicationsrequiringtheprocessingofveryhighfre-quencysignals.Whileofferingasmallsignalbandwidthof1750MHz,andanultrahighslewrateof4580V/µstheLMH6559consumesonly10mAofquiescentcurrent.Totalharmonicdistortionintoaloadof100Ωat20MHzis−52dBc.TheLMH6559isconfiguredinternallyforaloopgainofone.Inputresistanceis200kΩandoutputresistanceisbut1.2Ω.ThesecharacteristicsmaketheLMH6559anidealchoiceforthedistributionofhighfrequencysignalsonprintedcircuitboards.Differentialgainandphasespecificationsof0.06%and0.02˚respectivelyat3.58MHzmaketheLMH6559wellsuitedforthebufferingofvideosignals.ThedeviceisfabricatedonNational’shigh-speedVIP10processusingNational’sprovenhighperformancecircuitarchitectures.FeaturesnClosed-loopbuffern1750MHzsmallsignalbandwidthn4580V/µsslewraten0.06%/0.02˚differentialgain/phasen−52dBcTHDat20MHznSinglesupplyoperation(3Vmin.)n75mAoutputcurrentApplicationsnVideoswitchingandroutingnTestpointdriversnHighfrequencyactivefiltersnWidebandDCclampingbuffersnHigh-speedpeakdetectorcircuitsnTransmissionsystemsnTelecommunicationsnTestequipmentandinstrumentationTypicalSchematic20064133April2003LMH6559High-Speed,Closed-LoopBuffer©2003NationalSemiconductorCorporationDS200641(Note1)IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheNationalSemiconductorSalesOffice/Distributorsforavailabilityandspecifications.ESDToleranceHumanBodyModel2000V(Note2)MachineModel200V(Note3)OutputShortCircuitDuration(Note4),(Note5)SupplyVoltage(V+–V−)13VVoltageatInput/OutputPinsV++0.8V,V−−0.8VSolderingInformationInfraredorConvection(20sec.)235˚CWaveSoldering(10sec.)260˚CStorageTemperatureRange−65˚Cto+150˚CJunctionTemperature+150˚COperatingRatings(Note1)SupplyVoltage(V+-V−)3-10VOperatingTemperatureRange(Note6),(Note7)−40˚Cto+85˚CPackageThermalResistance(Note6),(Note7)8-PinSOIC172˚C/W5-PinSOT23235˚C/W±5VElectricalCharacteristicsUnlessotherwisespecified,alllimitsguaranteedforTJ=25˚C,V+=+5V,V−=−5V,VO=VCM=0VandRL=100Ωto0V.Boldfacelimitsapplyatthetemperatureextremes.SymbolParameterConditionsMin(Note9)Typ(Note8)Max(Note9)UnitsFrequencyDomainResponseSSBWSmallSignalBandwidthVO0.5VPP1750MHzGFNGainFlatness0.1dBVO0.5VPP200MHzFPBWFullPowerBandwidth(−3dB)VO=2VPP(+10dBm)1050MHZDGDifferentialGainRL=150Ωto0V;f=3.58MHz0.06%DPDifferentialPhaseRL=150Ωto0V;f=3.58MHz0.02degTimeDomainResponsetrRiseTime3.3VStep(20-80%)0.4nstfFallTime0.5nstsSettlingTimeto±0.1%3.3VStep9nsOSOvershoot1VStep4%SRSlewRate(Note11)4580V/µsDistortionAndNoisePerformanceHD22ndHarmonicDistortionVO=2VPP;f=20MHz−58dBcHD33rdHarmonicDistortionVO=2VPP;f=20MHz−53dBcTHDTotalHarmonicDistortionVO=2VPP;f=20MHz−52dBcenInput-ReferredVoltageNoisef=1MHz2.8nV/CP1dBCompressionpointf=10MHz+23dBmSNRSignaltoNoiseRatiof=5MHz;VO=1VPP120dBStatic,DCPerformanceACLSmallSignalVoltageGainVO=100mVPPRL=100Ωto0V.97.996V/VVO=100mVPPRL=2kΩto0V.99.998VOSInputOffsetVoltage32025mVTCVOSTemperatureCoefficientInputOffsetVoltage(Note12)23µV/˚CIBInputBiasCurrent(Note10)−10−14−3µATCIBTemperatureCoefficientInputBiasCurrent(Note12)−3.6nA/˚CLMH6559±5VElectricalCharacteristics(Continued)Unlessotherwisespecified,alllimitsguaranteedforTJ=25˚C,V+=+5V,V−=−5V,VO=VCM=0VandRL=100Ωto0V.Boldfacelimitsapplyatthetemperatureextremes.SymbolParameterConditionsMin(Note9)Typ(Note8)Max(Note9)UnitsROUTOutputResistanceRL=100Ωto0V;f=100kHz1.2ΩRL=100Ωto0V;f=10MHz1.3PSRRPowerSupplyRejectionRatioVS=±5VtoVS=±5.25V484463dBISSupplyCurrentNoLoad101417mAMiscellaneousPerformanceRINInputResistance200kΩCINInputCapacitance1.7pFVOOutputSwingPositiveRL=100Ωto0V3.203.183.45VRL=2kΩto0V3.553.543.65OutputSwingNegativeRL=100Ωto0V−3.45−3.20−3.18VRL=2kΩto0V−3.65−3.55−3.54ISCOutputShortCircuitCurrentSourcing:VIN=+VS;VO=0V−83mASinking:VIN=−VS;VO=0V83IOLinearOutputCurrentSourcing:VIN-VO=0.5V(Note10)−50−43−74mASinking:VIN-VO=−0.5V(Note10)5043745VElectricalCharacteristicsUnlessotherwisespecified,alllimitsguaranteedforTJ=25˚C,V+=5V,V−=0V,VO=VCM=V+/2andRL=100ΩtoV+/2.Boldfacelimitsapplyatthetemperatureextremes.SymbolParameterConditionsMin(Note9)Typ(Note8)Max(Note9)UnitsFrequencyDomainResponseSSBWSmallSignalBandwidthVO0.5VPP745MHzGFNGainFlatness0.1dBVO0.5VPP90MHzFPBWFullPowerBandwidth(−3dB)VO=2VPP(+10dBm)485MHZDGDifferentialGainRL=150ΩtoV+/2;f=3.58MHz0.29%DPDifferentialPhaseRL=150ΩtoV+/2;f=3.58MHz0.06degTimeDomainResponsetrRiseTime2.3VPPStep(20-80%)0.6nstfFallTime0.9nstsSettlingTimeto±0.1%2.3VStep9.6nsOSOvershoot1VStep3%SRSlewRate(Note11)2070V/µsDistortionAndNoisePerformanceHD22ndHarmonicDistortionVO=2VPP;f=20MHz−53dBcHD33rdHarmonicDistortionVO=2VPP;f=20MHz−56dBcTHDTotalHarmonicDistortionVO=2VPP;f=20MHz−52dBcenInput-ReferredVoltageNoisef=1MHz2nV/LMH6559(Continued)Unlessotherwisespecified,alllimitsguaranteedforTJ=25˚C,V+=5V,V−=0V,VO=VCM=V+/2andRL=100ΩtoV+/2.Boldfacelimitsapplyatthetemperatureextremes.SymbolParameterConditionsMin(Note9)Typ(Note8)Max(Note9)UnitsCP1dBCompres