标签: sky77318

SKY77318PRELIMINARYDATASHEETSKY77318iPACPAMforQuad-BandGSM/GPRSApplicationsQuad-Bandcellularhandsetsencompassing-Class4GSM850/900-Class1DCS1800/PCS1900-Class12GPRSmulti-slotoperationDescriptionTheSKY77318PowerAmplifierModule(PAM)isdesignedinalowprofile(1.2mm),compactformfactorforquad-bandcellularhandsetscomprisingGSM850/900,DCS1800,andPCS1900operation.ThePAMalsosupportsClass12GeneralPacketRadioService(GPRS)multi-slotoperation.ThemoduleconsistsofseparateGSMPAandDCS1800/PCS1900PAblocks,impedance-matchingcircuitryfor50inputandoutputimpedancesandaPowerAmplifierControl(PAC)blockwithaninternalcurrent-senseresistor.ThecustomBiCMOSintegratedcircuitprovidestheinternalPACfunctionandinterface……