ADI ADF4355微波寬帶(54-6800 MHz)頻率合成器解決方案

ADIADF4355微波寬帶(54-6800MHz)頻率合成器解決方案ADIADF4355微波寬帶(54-6800MHz)頻率合成器解決方案ADIADF4355微波寬帶(54-6800MHz)頻率合成器解決方案ADIADF4355微波寬帶(54-6800MHz)頻率合成器解決方案編制僅供參考審核批準生效日期地址：電話：傳真:郵編:ADIADF4355微波寬帶(54－6800MHz)頻率合成器解決方案ADI公司的ADF4355是微波寬帶(54-6800MHz)可實現(xiàn)小數(shù)N分頻或整數(shù)N分頻鎖相環(huán)(PLL)的頻率合成器,高分辨率38位模數(shù),低相位噪聲電壓控制振蕩器(VCO),可編程1/2/4/8/16/32/64分頻輸出,模擬和數(shù)字電源為V,主要用在無線基礎(chǔ)設(shè)施（W-CDMA,TD-SCDMA,WiMAX,GSM,PCS,DCS,DECT）,點到點/點到多點微波鏈路,衛(wèi)星/VSAT,測試設(shè)備/儀器儀表和時鐘產(chǎn)生.本文介紹了ADF4355主要特性,框圖和幾種應(yīng)用電路,以及評估板EV-ADF4355SD1Z主要特性,電路圖,材料清單和PCB設(shè)計圖.

TheADF4355allowsimplementationoffractional-Norinteger-Nphase-lockedloop(PLL)frequencysynthesizerswhenusedwithanexternalloopfilterandanexternalreferencefrequency.Aseriesoffrequencydividerspermitsoperationfrom54MHzto6800MHz.

TheADF4355hasanintegratedVCOwithafundamentaloutputfrequencyrangingfrom3400MHzto6800MHz.Inaddition,theVCOfrequencyisconnectedtodivideby1,2,4,8,16,32,or64circuitsthatallowtheusertogenerateRFoutputfrequenciesaslowas54MHz.Forapplicationsthatrequireisolation,theRFoutputstagecanbemuted.Themutefunctionisbothpinandsoftwarecontrollable.

Controlofallon-chipregistersisthroughasimple3-wireinterface.TheADF4355operateswithanaloganddigitalpowersuppliesrangingfromVtoV,withchargepumpandVCOsuppliesfromVtoV.TheADF4355alsocontainshardwareandsoftwarepower-downmodes.

ADF4355主要特性:

RFoutputfrequencyrange:54MHzto6800MHz

Fractional-Nsynthesizerandinteger-Nsynthesizer

Highresolution38-bitmodulus

Lowphasenoise,voltagecontrolledoscillator(VCO)

Programmabledivideby1,2,4,8,16,32,or64output

Analoganddigitalpowersupplies:V

ChargepumpandVCOpowersupplies:Vtypical

Logiccompatibility:V

Programmabledualmodulusprescalerof4/5or8/9

Programmableoutputpowerlevel

RFoutputmutefunction

3-wireserialinterface

Analoganddigitallockdetect

ADF4355應(yīng)用:

Wirelessinfrastructure(W-CDMA,TD-SCDMA,WiMAX,GSM,PCS,DCS,DECT)

Pointtopoint/pointtomultipointmicrowavelinks

Satellites/VSATs

Testequipment/instrumentation

Clockgeneration

圖功能框圖

圖2.ADF4355直接轉(zhuǎn)換調(diào)制器電路圖

圖3.ADF4355功電源電路圖

評估板EV-ADF4355SD1Z

TheEV-ADF4355SD1ZevaluatestheperformanceoftheADF4355frequencysynthesizerwithintegratedVCOforphase-lockedloops(PLLs).AphotographoftheevaluationboardisshowninFigure1.TheevaluationboardcontainstheADF4355frequencysynthesizerwithintegratedVCO,adifferentialMHzreference(TCXO),aloopfilter,aUSBinterface,powersupplyconnectors,andsubminiatureVersionA(SMA)connectors.AUSBcableisincludedtoconnecttheboardtoaPCUSBport.Foreasyprogrammingofthesynthesizer,downloadtheWindows-basedsoftwarefromThisboardrequiresanSDP-S(showninFigure1,butnotsuppliedwiththekit).TheSDP-SallowssoftwareprogrammingoftheEV-ADF4355SD1Zdevice.

評估板EV-ADF4355SD1Z主要特性:

Selfcontainedboard,includingADF4355frequency

synthesizerwithintegratedVCO,differentialMHz

temperaturecontrolledcrystaloscillator(TCXO),loop

filter(20kHz),USBinterface,andvoltageregulators

Windows?-basedsoftwareallowscontrolofsynthesizerfunctionsfromaPC

Externallypoweredby6V

圖4.評估板EV-ADF4355SD1Z外形圖

圖5.評估板EV-ADF4355SD1Z電路圖(1)

圖6.評估板EV-ADF4355SD1Z電路圖(2)

圖7.評估板EV-ADF4355SD1Z電路圖(3)

評估板EV-ADF4355SD1Z材料清單:

圖8.評估板