KeyFeatureso2400 2483MHzRFtransceiver GFSKandFSKmodulation Programmableoutputpower,Maxpower:18dBm,Sensitivity:-100dBm(atdatarate:10Kbps) Verylowcurrentconsumption(TX: 100mA,RX:24mA) Over-the-airdataratesof10kbps,250kbpsand1Mbps Agilefrequencysynthesizer(40ussettlingtime) On-chipVCO,LNAandPA Lowcoresupplyvoltage(1.6-2.0V) FlexibleI/Osupplyvoltage(1.6 3.6V)tomatchthesignallevelsoftheinterfacingmicrocontroller I/Qlow-IFreceiver I/Qdirectup-conversiontransmitteroFewexternalcomponents Onlyreferencecrystalandafewpassivesneeded NoexternalfiltersneededoProgrammablebasebandmodem 4-wireSPIinterface Serialclockupto20MHz