PCM2912_IcpdfCom_1205221

  1FEATURESAPPLICATIONSDESCRIPTIONPCM2912SLES216–FEBRUARY2008AUDIOCODECWITHUSBINTERFACE,MONOMICROPHONEINPUTANDSTEREOHEADPHONEOUTPUT23•On-ChipUSBInterface:–OversamplingDigitalFilter–WithFull-SpeedTransceivers–Pass-BandRipple:±0.1dB–FullyCompliantwithUSB2.0Specification–Stop-BandAttenuation:–43dB–CertifiedByUSB-IF–Single-EndedVoltageOutput–PartiallyProgrammableDescriptors–AnalogLPFIncluded–AdaptiveIsochronousTransferfor–SidetonePGA,OutputPGA,andHPPlaybackAmplifier–AsynchronousIsochronousTransferfor•Multifunctions:Record–Suspend,Playback,andRecordStatusFlag–BusPowered–MicrophoneAmplifier,Mute,andGain•16-BitDelta-SigmaADCandDACControl•SamplingRate:•Pop/ClickNoiseFree–8,11.025,16,22.05,32,44.1,48kHz•SinglePowerSupply:5VTyp(VBUS)•On-ChipClockGenerator:•Package:32-PinTQFP–WithSingle6-MHzClockSource•MonoADCwithMicrophoneInput•USBHeadset–AnalogPerformanceatVBUS=5V:•USBHeadphone–THD+N:0.01%•USBSpeaker–SNR:92dB•USBFeaturedConsumerAudioProduct–DynamicRange:90dB•USBAudioInterfaceBox–DecimationDigitalFilter•USBMonitor–Pass-BandRipple:±0.05dB•VideoConferenceSystem–Stop-BandAttenuation:–65dB–Single-EndedVoltageInput–AntialiasingFilterIncludedThePCM2912istheTexasInstrumentssingle-chip,USBstereoaudioCODECwithUSB2.0-compliant–DigitalHPFIncludedfull-speedprotocolcontrollerandanalogfrontend–MicrophoneBias,MicrophoneAmplifier,(AFE)functionforheadsetapplication.TheUSBandInputPGAprotocolcontrollerworkswithnosoftwarecode,but•StereoDACWithHeadphoneOutputUSBdescriptorscanbemodifiedonrequest(1).ThePCM2912employsSpAct™architecture,TI’sunique–AnalogPerformanceatVBUS=5.0V:systemthatrecoverstheaudioclockfromUSB–THD+N:0.01%(RL10kΩ)packetdata.OnchipanalogPLLswithSpActenables–THD+N:0.02%(RL=32Ω)independentplaybackandrecordsamplingratewithlowclockjitters.–SNR:92dB–DynamicRange:90dB–PO:13mW(RL=32Ω)–PO:25mW(RL=16Ω)(1)Thedescriptorcanbemodifiedbychangingamask;contactyourrepresentativeaboutthedetails.1Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.2SpActisatrademarkofTexasInstruments.3AudioPrecision,SystemTwoaretrademarksofAudioPrecision,Inc..PRODUCTIONDATAinformationiscurrentasofpublicationdate.Copyright©2008,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.–FEBRUARY2008ThisintegratedcircuitcanbedamagedbyESD.TexasInstrumentsrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.overoperatingfree-airtemperaturerange(unlessotherwisenoted)(1)(2)PCM2912UNITSupplyvoltageVBUS–0.3to+6.5VGroundvoltagedifferences:BGND,PGND,AGND,HGND,DGND±0.1VInputvoltage:VCCP,VCCA,VCCL,VCCR,VDD–0.3to4VPLAY,REC.–0.3to6.5VDigitalinputvoltageD+,D–,XTI,XTO,MMUTE,TEST0,TEST1,POWER,MAMP,SSPND–0.3to4VAnaloginputvoltageMBIAS,VIN,VCOM1,VCOM2,VOUTL,VOUTR,FR,FL–0.3to4VInputcurrent(anypinsexceptsupplies)±10mAAmbienttemperatureunderbias–40to125°CStoragetemperature–55to150°CJunctiontemperature150°C(1)Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolute–maximum–ratedconditionsforextendedperiodsmayaffectdevicereliability.(2)Allvoltagevaluesarewithrespecttonetworkgroundterminal.overoperatingfree-airtemperaturerange(unlessotherwisenoted)MINNOMMAXUNITVBUSSupplyvoltage4.355.005.25VAnaloginputvoltage,fullscale(–0dB)0.43VCCAVp-pDigitalinputlogicfamilyTTLDigitaliInputclockfrequency5.9976.0006.003MHzAnalogoutputloadresistance32ΩAnalogoutputloadcapacitance100pFDigitaloutputloadcapacitance10pFTAOperatingfree-airtemperature–2570°C2SubmitDocumentationFeedbackCopyright©2008,TexasInstrumentsIncorporatedProductFolderLink(s):PCM2912–FEBRUARY2008AllspecificationsatTA=25°C,VBUS=5V,fS=44.1kHz,fIN=1kHz,16-bitdata,unlessotherwisenotedPCM2912PJTPARAMETERTESTCONDITIONSUNITMINTYPMAXDIGITALINPUT/OUTPUTHostinterfaceApplyUSBRevision2.0,full-speedAudiodataformatUSBisochronousdataformatINPUTLOGICVIH23.3InputlogiclevelVDCVIL0.8IIH(1)(2)VIN=3.3V±10μAIIL(1)(2)VIN=0V±10InputlogiccurrentIIH(3)VIN=3.3V65100μAIIL(3)VIN=0V±10OUTPUTLOGICVOH(1)IOH=–10mA2.9VOL(1)IOL=10mA0.3VOH(4)OutputlogiclevelIOH=–2mA2.8VDCVOL(4)IOL=2mA0.5VOL(5)IOL=8mA0.5IOH(5)OutputleakcurrentVIN=5V±10μACLOCKFREQUENCYInputclockfrequency,XTI5.9976.0006.003MHzMICROPHONEBIASOutputvoltage0.75VCCAVDCOutputcurrent2mAOutputnoiseRL=1kΩ5μVrms(