參數(shù)資料
型號： AFCT-57J5ATPZ
元件分類： 光收發(fā)
英文描述： FIBER OPTIC TRANSCEIVER, 1290-1340nm, 3072Mbps(Tx), 3072Mbps(Rx), SURFACE MOUNT, LC CONNECTOR
封裝： ROHS COMPLIANT PACKAGE
文件頁數(shù)： 13/18頁
文件大小： 383K
代理商： AFCT-57J5ATPZ
4
Caution
There are no user serviceable parts nor maintenance
requirements for the AFCT-57J5ATPZ. All mechanical
adjustmentsaremadeatthefactorypriortoshipment.
Tampering with, modifying, misusing or improp-
erlyhandlingtheAFCT-57J5ATPZwillvoidtheproduct
warranty. It may also result in improper operation and
possibly overstress the laser source. Performance deg-
radationordevicefailuremayresult.Connectionofthe
AFCT-57J5ATPZ to a light source not compliant with
ANSIFC-PIorIEEE802.3specifications,operatingabove
maximumoperatingconditionsorinamannerinconsis-
tentwithit’sdesignandfunctionmayresultinexposure
tohazardouslightradiationandmayconstituteanact
ofmodifyingormanufacturingalaserproduct.Persons
performingsuchanactarerequiredbylawtore-certify
andre-identifythelaserproductundertheprovisionsof
U.S.21CFR(SubchapterJ)andTUV.
OrderingInformation
Pleasecontactyourlocalfieldsalesengineeroroneof
AvagoTechnologiesfranchiseddistributorsforordering
information.Fortechnicalinformation,pleasevisitAvago
Technologies’WEBpageatwww.avagotech.comorcontact
AvagoTechnologiesSemiconductorProductsCustomer
Response Center at 1-800-235-0312. For information
related to SFF Committee documentation visit www.
sffcommittee.org.
RegulatoryCompliance
The AFCT-57J5ATPZ complies with all applicable laws
andregulationsasdetailedinTable1.Certificationlevel
is dependent on the overall configuration of the host
equipment.Thetransceiverperformanceisofferedasa
figureofmerittoassistthedesigner.
ElectrostaticDischarge(ESD)
TheAFCT-57J5ATPZiscompatiblewithESDlevelsfound
intypicalmanufacturingandoperatingenvironmentsas
describedinTable1.Inthenormalhandlingandoper-
ation of optical transceivers, ESD is of concern in two
circumstances.
Thefirstcaseisduringhandlingofthetransceiverprior
toinsertionintoanSFPcompliantcage.Toprotectthe
device,it’simportanttousenormalESDhandlingprecau-
tions.Theseincludeusingofgroundedwriststraps,work-
benchesandfloorwhereveratransceiverishandled.
Thesecondcasetoconsiderisstaticdischargestothe
exteriorofthehostequipmentchassisafterinstallation.
Iftheopticalinterfaceisexposedtotheexteriorofhost
equipment cabinet, the transceiver may be subject to
ReceiverSection
ThereceiversectionincludestheReceiverOpticalSub-
Assembly (ROSA) and the amplification/quantization
circuitry. The ROSA, containing a PIN photodiode and
customtransimpedanceamplifier,islocatedattheoptical
interfaceandmateswiththeLCopticalconnector.The
ROSA output is fed to a custom IC that provides post-
amplificationandquantization.
ReceiverLossofSignal(Rx_LOS)
The post-amplification IC also includes transition
detection circuitry which monitors the ac level of
incoming optical signals and provides a TTL/CMOS
compatiblestatussignaltothehost(pin8).Anadequate
opticalinputresultsinalowRx_LOSoutputwhileahigh
Rx_LOSoutputindicatesanunusableopticalinput.The
Rx_LOSthresholdsarefactorysetsothatahighoutput
indicates a definite optical fault has occurred. Rx_LOS
canalsobemonitoredviathetwo-wireserialinterface
(addressA2h,byte110,bit1).
FunctionalDataI/O
TheAFCT-57J5ATPZinterfaceswiththehostcircuitboard
throughtwentyI/Opins(SFPelectricalconnector)iden-
tified by function inTable 2.The board layout for this
interfaceisdepictedinFigure6.
The AFCT-57J5ATPZ high speed transmit and receive
interfaces require SFP MSA compliant signal lines on
thehostboard.Tosimplifyboardrequirements,biasing
resistors and ac coupling capacitors are incorporated
into the SFP transceiver module (per SFF-8074i) and
hencearenotrequiredonthehostboard.TheTx_Disable,
Tx_Fault,Rx_LOSrequireTTLlinesonthehostboard(per
SFF-8074i)ifused.Ifanapplicationchoosesnottotake
advantageofthefunctionalityofthesepins,caremustbe
takentogroundTx_Disable(fornormaloperation).
Figure 2 depicts the recommended interface circuit to
linktheAFCT-57J5ATPZtosupportingphysicallayerICs.
TimingforMSAcompliantcontrolsignalsimplemented
inthetransceiverarelistedinFigure4.
ApplicationSupport
AnEvaluationKitandReferenceDesignsareavailableto
assistinevaluationoftheAFCT-57J5ATPZ.Pleasecontact
yourlocalFieldSalesrepresentativeforavailabilityand
orderingdetails.
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