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1.4HardwareConfiguration
2TRF2436EVMOperationalProcedure
2.1TXOperation
TRF2436EVMOperationalProcedure
TheTRF2436EVMcanbesetupinavarietyofconfigurationstoaccommodateaspecificmodeof
operation.Beforestartinganevaluation,decideontheconfigurationandmaketheappropriate
connectionsorchanges.Thedemonstrationboardcomeswiththefollowingfactory-setconfiguration:
JumperJ10installedbetween1-2
JumperJ11installedbetween2-3
JumperJ12installedbetween1-2
JumperJ13installedbetween1-2
JumperJ14installedbetween1-2
LOinputdrive
TheTRF2436hasbeendesignedtobedrivenwithadifferentialLOinput.Asimplebaluncenteredat~2.6
GHzcanbeusedtoconvertasingle-endedinputfromanRFsourcetoadifferentialpairtoprovidea
differentialLOtotheEVMthroughSMAconnectorsJ3andJ4.
The2436willfunctionifdrivensingle-ended,butitisnotdesignedtooperateinthiscondition,norhasit
beenevaluatedinthiscondition.TodrivetheLOsingle-ended,connectanRFsourcetotheLOPSMA
(J3)andterminatetheLONSMA(J4)inputwith50Ω.
Filtering
TheTRF2436EVMisprovidedwithnofiltering.Themixeroutput,PAinput/LNAoutput,andRF
input/outputpinsarebroughtoutdirectlytoSMAconnectorsontheEVM.Filteringmaybeincorporated
by:
•ConnectinganexternalfiltertoRFANTA(J6)forfilteringafterthePAinTXmodeorbeforetheLNAin
RXmode.
•ConnectinganexternalfilterbetweentheMFA(J8)andRFA(J9)jacksforfilteringbetweenthemixer
andPA/LNAstages
1.Connect+3.3VtoP1andgroundtoP2butdonotturnon.
2.ConnectdifferentialLOsourcetoLOP/LONjacks(oruseexternalbalun).
Settheappropriatefrequencyandpowerlevelbetween0to+4dBm.RememberthatforA-band
operation,theLOinputfrequencyisdoubledinsidetheTRF2436;so,theLOshouldbesettohalfthe
frequencydesiredatthemixerLOport.
3.ConnectanIFsourcetotheIFport.Setto374MHzwithatypicalpowerlevelof–20dBm.
4.SetABSEL(J12)toalogichigh1.
5.SetTR(J13)toalogichigh1.
6.SetPA_BSEL(J11)toalogiclow0.
7.SetPA_ASEL(J10)tologichigh1.
8.RXDGC=don’tcare
9.Formixerstagemeasurement:
a.TerminateRFA(J9)andRFANTA(J6)into50Ω.
b.ConnectaspectrumanalyzertoMFA(J8).
c.Turnonthe3.3-Vpowersupply(~300mAto320mA).
d.Observetheoutputofthemixerstageonaspectrumanalyzer.
10.ForPAstagemeasurement:
a.TerminateIF(J7)andMFA(J8)into50Ω.
b.ApplyanRFtoRFA(J9).
c.ConnectaspectrumanalyzertoRFANTA(J6).
d.Turnonthepowersupply.
e.ObservethePAoutputonaspectrumanalyzer.
TRF2436EVM2SLWU038–August2006
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