ADM2587E-2587E

SignalandPowerIsolatedRS-485Transceiverwith±15kVESDProtectionADM2582E/ADM2587ERev.0InformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,noresponsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.OneTechnologyWay,P.O.Box9106,Norwood,MA02062-9106,U.S.A.Tel:[phone]©2009AnalogDevices,Inc.Allrightsreserved.FEATURESIsolatedRS-485/RS-422transceiver,configurableashalforfullduplexisoPower®integratedisolateddc-to-dcconverter±15kVESDprotectiononRS-485input/outputpinsComplieswithANSI/TIA/EIA-485-A-98andISO8482:1987(E)ADM2582Edatarate:16MbpsADM2587Edatarate:500kbps5Vor3.3VoperationConnectupto256nodesononebusOpen-andshort-circuit,fail-safereceiverinputsHighcommon-modetransientimmunity:25kV/μsThermalshutdownprotectionSafetyandregulatoryapprovals(pending)ULrecognition:2500Vrmsfor1minuteperUL1577VDECertificatesofConformityDINVVDEV0884-10(VDEV0884-10):2006-12VIORM=560VpeakOperatingtemperaturerange:−40°Cto+85°CHighlyintegrated,20-lead,wide-bodySOICpackageAPPLICATIONSIsolatedRS-485/RS-422interfacesIndustrialfieldnetworksMultipointdatatransmissionsystemsFUNCTIONALBLOCKDIAGRAMADM2582E/ADM2587ETxDABYZDEVCCRxDREISOLATIONBARRIERTRANSCEIVERGND1GND2ENCODEENCODEDECODEDECODEDRDECODEENCODEOSCILLATORRECTIFIERREGULATORVISOOUTDIGITALISOLATIONiCouplerisoPowerDC-TO-DCCONVERTERVISOIN08111-001Figure1.GENERALDESCRIPTIONTheADM2582E/ADM2587Earefullyintegratedsignalandpowerisolateddatatransceiverswith±15kVESDprotectionandaresuitableforhighspeedcommunicationonmultipointtransmissionlines.TheADM2582E/ADM2587Eincludeanintegratedisolateddc-to-dcpowersupply,whicheliminatestheneedforanexternaldc-to-dcisolationblock.TheyaredesignedforbalancedtransmissionlinesandcomplywithANSI/TIA/EIA-485-A-98andISO8482:1987(E).ThedevicesintegrateAnalogDevices,Inc.,iCoupler®technologytocombinea3-channelisolator,athree-statedifferentiallinedriver,adifferentialinputreceiver,andAnalogDevicesisoPowerdc-to-dcconverterintoasinglepackage.Thedevicesarepoweredbyasingle5Vor3.3Vsupply,realizingafullyintegratedsignalandpowerisolatedRS-485solution.TheADM2582E/ADM2587Edriverhasanactivehighenable.Anactivelowreceiverenableisalsoprovidedthatcausesthereceiveroutputtoenterahighimpedancestatewhendisabled.Thedeviceshavecurrentlimitingandthermalshutdownfeaturestoprotectagainstoutputshortcircuitsandsituationswherebuscontentionmaycauseexcessivepowerdissipation.Thepartsarefullyspecifiedovertheindustrialtemperaturerangeandareavailableinahighlyintegrated,20-lead,wide-bodySOICpackage.TheADM2582E/ADM2587EcontainisoPowertechnologythatuseshighfrequencyswitchingelementstotransferpowerthroughthetransformer.Specialcaremustbetakenduringprintedcircuitboard(PCB)layouttomeetemissionsstandards.RefertoApplicationNoteAN-0971,ControlofRadiatedEmissionswithisoPowerDevices,fordetailsonboardlayoutconsiderations.ADM2582E/ADM2587ERev.0|Page2of20TABLEOFCONTENTSFeatures..............................................................................................1 Applications.......................................................................................1 FunctionalBlockDiagram..............................................................1 GeneralDescription.........................................................................1 RevisionHistory...............................................................................2 Specifications.....................................................................................3 ADM2582ETimingSpecifications............................................4 ADM2587ETimingSpecifications............................................4 ADM2582E/ADM2587EPackageCharacteristics...................4 ADM2582E/ADM2587ERegulatoryInformation..................5 ADM2582E/ADM2587EInsulationandSafety-RelatedSpecifications................................................................................5 ADM2582E/ADM2587EVDE0884InsulationCharacteristics(Pending)............................................................5 AbsoluteMaximumRatings............................................................6 ESDCaution..................................................................................6 PinConfigurationandFunctionDescriptions.............................7 TypicalPerformanceCharacteristics.............................................8 TestCircuits.....................................................................................12 SwitchingCharacteristics..............................................................13 CircuitDescription.........................................................................14 SignalIsolation...........................................................................14 PowerIsolation............................................