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RFGA2054

发布时间:2019/10/9 10:06:00 访问次数:32发布企业:深圳市创宝来科技有限公司

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


RFGA2054

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