Samsung SGH-P270 Service Manual

Also see for SGH-P270: User manual

Contents

SAMSUNG Proprietary-Contents may change without noticeThis Document can not be used without Samsung's authorization7. Block Diagrams7-17-1. RF Solution Block DiagramGSM850/900 TXRF out3G PAM (RF3266)AMPAMP InputMatchingOutputMatchingInter-StageMatchingIntegratedPowerDetector Bias CircuitVcc1 Vcc2Vreg Vmode Vccbias VDETRF inRAMPOUTDuplexer RXTXANTVddGaAs SWVC1VC4VC3VC2SAWSAWSAWSAWLPFLPFUMTS TRX1UMTS TRX2UMTS TRX3DCS/PCS TXGSM850 RXGSM900 RXDCS RXPCS RXFEM(LSHS-D085UK)HB_RFOUTLB_RFOUTIntegratedPowerControlHB_RFINHB_RFIN2G PAM (RF3159)BAND_SELVMODEVRAMPVBATTTX_ENRF outMODEM(PNX5217)BB3G_RXINBB3G_RXIPBB3G_RXQNBB3G_RXQPBB3G_TXINBB3G_TXIPBB3G_TXQNBB3G_TXQPREGRFFRAC’NSYNTHVCCTXRF_DAC2RF_DAC1MIX1_BMIX1_ADACDACRFFRAC’NSYNTHREGCTL BUSVCCRXLNA1_OUT LNA1_INVCCLORXVDDTSTCLKVGACTLDATAENREFINRXIARXIBRXQARXQBGNDTXTX_1VCCLOTXGNDTXTXIATXQBTXQATXIBSAW3G TRANSCEIVER(UAA3582)VCO+FREQUENCYSYNTHESIZER DCXOIADCQADCLNALNADIGITALFILTER0 / 90DVGAPACTRLMUX GMSK / 8PSKBASEBANDINTERFACEPGAPGALNALNAΦDETLOW-IFPGAPGADVGAAVGAAVGAXOUTAFCRAMPINIQ2G TRANSCEIVER(AERO4221) 26MHz