Si4432

PreliminaryRev.0.31/09Copyright©2009bySiliconLaboratoriesSi4432Thisinformationappliestoaproductunderdevelopment.Itscharacteristicsandspecificationsaresubjecttochangewithoutnotice.Si4432Si4432ISMTRANSCEIVERFeaturesApplicationsDescriptionSiliconLaboratories’Si4432highlyintegrated,singlechipwirelessISMtransceiverispartoftheEZRadioPRO™family.TheEZRadioPROfamilyincludesacompletelineoftransmitters,receivers,andtransceiversallowingtheRFsystemdesignertochoosetheoptimalwirelesspartfortheirapplication.TheSi4432offersadvancedradiofeaturesincludingcontinuousfrequencycoveragefrom240–930MHzandadjustableoutputpowerofupto+20dBm.TheSi4432’shighlevelofintegrationoffersreducedBOMcostwhilesimplifyingtheoverallsystemdesign.Theextremelylowreceivesensitivity(–118dBm)coupledwithindustryleading+20dBmoutputpowerensuresextendedrangeandimprovedlinkperformance.Built-inantennadiversityandsupportforfrequencyhoppingcanbeusedtofurtherextendrangeandenhanceperformance.Additionalsystemfeaturessuchasanautomaticwake-uptimer,lowbatterydetector,64byteTX/RXFIFOs,automaticpackethandling,andpreambledetectionreduceoverallcurrentconsumptionandallowtheuseoflower-costsystemMCUs.Anintegratedtemperaturesensor,generalpurposeADC,power-on-reset(POR),andGPIOsfurtherreduceoverallsystemcostandsize.TheSi4432’sdigitalreceivearchitecturefeaturesahigh-performanceADCandDSPbasedmodemwhichperformsdemodulation,filtering,andpackethandlingforincreasedflexibilityandperformance.Thisdigitalarchitecturesimplifiessystemdesignwhileallowingfortheuseoflower-endMCUs.ThedirectdigitaltransmitmodulationandautomaticPApowerrampingensureprecisetransmitmodulationandreducedspectralspreadingensuringcompliancewithFCCandETSIregulations.FrequencyRange=240–930MHzSensitivity=–118dBm+20dBmMaxOutputPowerConfigurable+11to+20dBmLowPowerConsumption18.5mAreceive27mA@+11dBmtransmitDataRate=1to128kbpsPowerSupply=1.8to3.6VUltralowpowershutdownmodeDigitalRSSIWake-on-radioAuto-frequencycalibration(AFC)AntennadiversityandTRswitchcontrolConfigurablepacketstructurePreambledetectorTXandRX64byteFIFOsLowbatterydetectorTemperaturesensorand8-bitADC–40to+85°CtemperaturerangeIntegratedvoltageregulatorsFrequencyhoppingcapabilityOn-chipcrystaltuning20-PinQFNpackageFSK,GFSK,andOOKmodulationLowBOMPower-on-reset(POR)RemotecontrolHomesecurity&alarmTelemetryPersonaldataloggingToycontrolTirePressuremonitoringWirelessPCperipheralsRemotemeterreadingRemotekeylessentryHomeautomationIndustrialcontrolSensornetworksHealthmonitorsTagreadersPatentspendingOrderingInformation:Seepage162.PinAssignmentsVDD_RF123415141312678919181720TXRXpRXnSCLKSDISDOVDD_DIGNCGPIO_0GPIO_1GPIO_2XINXOUTSDNnIRQMetalPaddle511VR_IFNC1016VDRnSELSi4432Si44322PreliminaryRev.0.3FunctionalBlockDiagramLPFCPDeltaSigmaModulatorNLNAMixersPGAAGCControlPAVCOSPI,&ControllerDigitalLogicPFDPWR_CTRLTXRFnPA_RAMPPWR_CTRLPA_RAMPGPIO_2GPIO_1TXMODXoutXinDigitalModemDigitalLDORC32KOSC30MXTALOSCRFLDOIFLDOVCOLDOPLLLDOBIASSDNTXRXSWANTDIVLowPowerDigitalLDOPORTempSensorVR_DIGGPIO_0VDD_DIGSDOSDISCLKVDD_DIGVR_IFLBDnSELVDD_RF8BitADCRFpADCSi4432PreliminaryRev.0.33TABLEOFCONTENTSSectionPage1.ElectricalSpecifications...................................................81.1.DefinitionofTestConditions...........................................152.FunctionalDescription...................................................162.1.OperatingModes....................................................183.ControllerInterface......................................................193.1.SerialPeripheralInterface(SPI)........................................193.2.OperatingModeControl..............................................213.3.Interrupts.........................................................243.4.DeviceCode.......................................................243.5.SystemTiming.....................................................253.6.FrequencyControl...................................................274.ModulationOptions......................................................344.1.ModulationType....................................................344.2.ModulationDataSource..............................................354.3.FIFOMode........................................................354.4.DirectMode........................................................354.5.PN9Mode.........................................................364.6.Synchronousvs.Asynchronous........................................365.InternalFunctionalBlocks................................................385.1.RXLNA...........................................................385.2.RXI-QMixer.......................................................385.3.ProgrammableGainAmplifier..........................................385.4.ADC..............................................................385.5.DigitalModem......................................................385.6.Synthesizer........................................................395.7.PowerAmplifier..................................................