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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)： | 16/18頁 |
| 文件大?。?/td> | 383K |
| 代理商： | AFCT-57J5ATPZ |
7
Notes:
1. TX_FAULTisanopencollector/drainoutput,whichmustbepulledupwitha4.7k–10kΩresistoronthehostboard.Whenhigh,thisoutput
indicatesalaserfaultofsomekind.Lowindicatesnormaloperation.Inthelowstate,theoutputwillbepulledto<0.8V.
2. TX_DISABLEisaninputthatisusedtoshutdownthetransmitteropticaloutput.Itisinternallypulledup(withinthetransceiver)witha6.8kΩ
resistor.
Low(0–0.8V):
Transmitteron
Between(0.8Vand2.0V):
Undefined
High(2.0–Vccmax)orOPEN:
TransmitterDisabled
3. ThesignalsMod-Def0,1,2designatethetwowireserialinterfacepins.Theymustbepulledupwitha4.7k–10kΩresistoronthehostboard.
Mod-Def0isgroundedbythemoduletoindicatethemoduleispresent
Mod-Def1isserialclockline(SCL)oftwowireserialinterface
Mod-Def2isserialdataline(SDA)oftwowireserialinterface
4. RX_LOS(RxLossofSignal)isanopencollector/drainoutputthatmustbepulledupwitha4.7k–10kΩresistoronthehostboard.Whenhigh,
thisoutputindicatesthereceivedopticalpowerisbelowtheworstcasereceiversensitivity(asdefinedbythestandardinuse).Lowindicates
normaloperation.Inthelowstate,theoutputwillbepulledto<0.8V.
5. RD-/+designatethedifferentialreceiveroutputs.TheyareACcoupled100Ωdifferentiallineswhichshouldbeterminatedwith100Ωdiffer-
entialatthehostSERDESinput.ACcouplingisdoneinsidethetransceiverandisnotrequiredonthehostboard.Thevoltageswingonthese
lineswillbebetween600and1600mVdifferential(300–800mVsingleended)whenproperlyterminated.
6. VccRandVccTarethereceiverandtransmitterpowersupplies.TheyaredefinedattheSFPconnectorpin.Themaximumsupplycurrentis300
mAandtheassociatedin-rushcurrentwilltypicallybenomorethan30mAabovesteadystateafter2microseconds.
7. TD-/+designatethedifferentialtransmitterinputs.TheyareACcoupleddifferentiallineswith100Ωdifferentialterminationinsidethemodule.
TheACcouplingisdoneinsidethemoduleandisnotrequiredonthehostboard.Theinputswillacceptdifferentialswingsof400–2400mV
(200–1200mVsingleended),althoughitisrecommendedthatvaluesbetween500mVand1200mVdifferential(250-600mVsingleended)
beusedforbestEMI.
Table2.PinDescription
Pin
Name
Function/Description
Notes
1
VeeT
TransmitterGround
2
TX_FAULT
TransmitterFaultIndication–Highindicatesafaultcondition
Note1
3
TX_DISABLE
TransmitterDisable–Moduleopticaloutputdisablesonhighoropen
Note2
4
MOD-DEF2
ModuleDefinition2–TwowireserialIDinterfacedataline(SDA)
Note3
5
MOD-DEF1
ModuleDefinition1–TwowireserialIDinterfaceclockline(SCL)
Note3
6
MOD-DEF0
ModuleDefinition0–Groundedinmodule(modulepresentindicator)
Note3
7
N.C.
8
RX_LOS
LossofSignal–Highindicateslossofreceivedopticalsignal
Note4
9
VeeR
ReceiverGround
10
VeeR
ReceiverGround
11
VeeR
ReceiverGround
12
RD-
InverseReceivedDataOut
Note5
13
RD+
ReceivedDataOut
Note5
14
VeeR
ReceiverGround
15
VccR
ReceiverPower+3.3V
Note6
16
VccT
TransmitterPower+3.3V
Note6
17
VeeT
TransmitterGround
18
TD+
TransmitterDataIn
Note7
19
TD-
InverseTransmitterDataIn
Note7
20
VeeT
TransmitterGround
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