SI4123-D-GT

Rev. 1.61 1/10Copyright © 2010 by Silicon LaboratoriesSi4133Si4133Si4123/22/13/12D UAL-B AND RF S YNTHESIZER WITH I NTEGRATED VCO SF OR WIRELESS C OMMUNICATIONSF EATURESApplicationsDescriptionThe Si4133 is a monolithic integrated circuit that performs both IF and dual-band RF synthesis for wireless communications applications. The Si4133includes three VCOs, loop filters, reference and VCO dividers, and phasedetectors. Divider and powerdown settings are programmable with a three-wire serial interface.Functional Block DiagramDual-band RF synthesizersRF1: 900 MHz to 1.8 GHzRF2: 750 MHz to 1.5 GHzIF synthesizerIF: 62.5 to 1000 MHzIntegrated VCOs, loop filters,varactors, and resonatorsMinimal (2) number of externalcomponents requiredLow phase noiseProgrammable powerdown modes1 µA standby current18 mA typical supply current2.7 to 3.6 V operationPackages: 24-pin TSSOP,28-lead QFNLead-free and RoHS compliantDual-band communicationsDigital cellular telephones GSM 850, E-GSM 900, DCS 1800,PCS 1900Digital cordless phonesAnalog cordless phonesWireless local loopIFOUTIFLAIFLBRFOUTXINPWDNSDATASCLKSENIFRF2RF1PowerdownControlReferenceAmplifierSerialInterfaceAUXOUTIFDIVRRRNNNPhaseDetector22-bitDataRegisterTestMuxRFLCRFLDRFLARFLBPhaseDetectorPhaseDetectorPatents pendingOrdering Information:See page 31.Pin AssignmentsSi4133-GTSi4133-GM124223322421520619718817916101511141213SCLKSDATAGNDRRFLDRFLCRFLBGNDRRFLAGNDRGNDRRFOUTVDDRSENVDDIIFOUTGNDIIFLBIFLAGNDDVDDDGNDDXINPWDNAUXOUTGNDPadRFLDRFLCRFLBGNDRRFLAGNDIIFLBIFLAVDDDGNDDXIN212019181716158910 11 12 13 1428 27 2625 24 23 221234567GNDRGNDRGNDD