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RFMD2080

发布时间:2019/10/9 10:05:00 访问次数:33发布企业:深圳市创宝来科技有限公司

RFOutputFrequencyRange45MHzto270ÔMHz

Fractional-NSynthesizerwithVeryLowSpuriousLevelsTypica1StepSize1.5Hz

FullyIntegratedWidebandVCOsandLOBuffers

IntegratedPhaseNoise<0.2rmsat1GHzIntegratedBaseband

Amp1ificationStagewithVariableGainandFiltering

TunableBasebandFiltersInput3dBBandwidthfrom1.5MHzto10MHz

Phase

det.

Synth

lZF

Ref.divider

FunctionalB1ockDiagram

ProđuctDescription

-45dBcUnadjustedCarrierSuppression

-40dBcUnadjustedSidebandSuppression

VeryLowNoiseF1oor-150dBm/HzTypicalOutputP1dB+4dBmOutputIP3+18dBm

3.0Vto3.3VPowerSupp1y155mATypica1CurrentConsumption

SerialProgrammingInterface

Applications

SatellitecommunicationsQPSK/QAMModulatorsssBModulators

SoftwareDefinedRadios

TheRFMD2080isa1owpower,highlyintegrated,IQmodulatorwithintegratedfractional-Nsyn-thеѕіzеrаndvоltаgесоntrоllеdоѕсіllаtоr(ѴСО).ТhеRFМD2080.саngеnеrаtеоutрutfrеquеn-ciesofbetween45MHzand2700MHz,makingitsuitableforawiderangeofapplications.Thefractional-Nsynthesizertakesadvantageofanadvancedsigma-deltaarchitecturethat

deliversultra-,finestepsizesanđlowspuriousproducts.Ihesynthesizer/VCOcombinedwithanexternalloopfilterallowstheusertogenerateanoscillatorsignalcovering90MHzto5400MHz.Thesignalisbufferedandroutedtoalighaccuracyquadraturedivider((2)thatdrivestheba1-ancedIanđQmixers.Theoutputofthe_mixersaresummedandappliedtoađifferentialRFout-putstage.ThedevicealsofeaturesadifferentialinputforanexternalVcOorLOsource.

ThebasebandIanđQstagesarehigh1yintegrated;featuringvariablegainandfilteringaswellasgenerationofDCoffsetvoltages.TheprogrammableDCoffsetsenableimprovedcarriersup-pression.Thebasebandinput3dBbandwidthcanbetunedfrom1.5MHzto10MHz,anđthetotalgaincontrolrangeis38dBwith2dBresolution.

Device.programmingisachievedviaasimple3-wireseria1interface.Inaddition,auniquepro-grammingmodeallowsuptofourdevices'tobecontrolledfromacommonseriaíbus.Thiselim-inatestheneedforseparatechip-selectcontro11inesbetweeneachdeviceandthehost

controller.Up_tosixgeneralpurposeoutputsareprovided,whichcanbeusedtoaccessinterna!signals(theLOCKsignal,fofexamp1e)ortocontro1frontendcomponents.Thedeviceisopti-mizedforlowpoweroperation,consumingtypicallyonly155mAỈroma3Vsupply.

OptimumTechno1ogyMatchingApplied

-]GaAsHBTẞSiGeBicMOSOGaAspHEMTẞGaNHEMTẞGaAsMESFEẞSiBiCMOSẞSicMosJRFMEMSC]InGaPHBTẞSiGeHBTẞsiBJTẞLDMOS



RFMD2080

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