rfRXD0420 ASK接收器参考设计

Thisapplicationnotedescribesalowcost,high

performanceUHFshort-rangeradioASKreceiver

designusingtheMicrochipTechnologyrfRXD0420.

Thereferencedesignissuitablefor:

•Wirelessremotecommandandcontrol

•RemoteKeylessEntry(RKE)

•Securitysystems

•Lowpowertelemetryapplications

Thespecificsofthisreceiverreferencedesignare:

•Singlechannel,fixedfrequencyat433.92MHz

•ASKmodulation

•Signalrate:4800baud

CompleteschematicsandPCBlayoutaregivenin

AppendixA.BillofMaterials(BOM)areinAppendixB.

Gerberfilesareavailableinthecompanionfile

AN00860B.ZIP.AN860rfRXD0420ASKReceiverReferenceDesignAuthor:StevenBibleCrystalOscillatorandCrystalSelectionMicrochipTechnologyInc.TherfRXD0420isasingle-conversionsuperhetero-dynearchitecturewithasingleIFfrequency.TheINTRODUCTIONreceivefrequencyissetbythecrystalfrequency(fXTAL)andintermediatefrequency(fif).Thisapplicationnotedescribesalowcost,highperformanceUHFshort-rangeradioASKreceiver