NAU8810-Datasheet

NAU8810emPowerAudio™DatasheetRevision1.2Page1of98January2011MonoAudioCodecwith2-wireInterfaceControlInterfaceemPowerAudio™1.GENERALDESCRIPTIONTheNAU8810isacosteffectivelowpowerwidebandMonophonicaudioCODEC.Itissuitableforawiderangeofaudioapplications,includingvoicetelephony.Supportedfunctionsincludea5-bandGraphicEqualizer,AutomaticLevelControl(ALC)withnoisegate,PGA,standardI2SorPCMaudiointerfaceI2S,optionalPCMtimeslotassignment,andafullfractional-Non-chipPLL.Thisdeviceincludesonedifferentialmicrophoneinput,andmultiplevariablegaincontrolstagesintheaudiopaths.BothaMonoheadset/line-leveloutputandahighpowerdifferentialBTLspeakerdriveroutputareprovided.TheanaloginputspathincludesaPGAenablingdynamicrangeoptimizationofawiderangeofinputsourceswithprogrammablegainfrom-12dBto+35.25dB..InadditiontoadigitalhighpassfiltertoremoveDCoffsetvoltages,theADCalsofeaturesprogrammablevoicebanddigitalfiltering.AudiodataarecommunicatedviatheaudiointerfacethatsupportsmultipleI2SandPCMdataformats.TheDACconverterpathincludesfilteringandmixing,programmable-gainamplifiers,,andsoftmuting.The2-Wiredigitalcontrolinterfacehasanindependentsupplyvoltagetoenableeasyintegrationintomultiplesupplyvoltagesystems.TheNAU8810operatesatsupplyvoltagesfrom2.5Vto3.6V,andthedigitalcorecanoperateatavoltageaslowas1.71Vtoconservepower.2.FEATURES24-bitsignalprocessinglinearAudioCODECAudioDAC:93dBSNRand-84dBTHDAudioADC:91dBSNRand-79dBTHDSupportvariablesampleratesfrom8-48kHzAnalogI/OIntegratedprogrammableMicrophoneAmplifierIntegratedBTLSpeakerDriver1W(8Ω/5V)Earphone/Speaker/LineOutputMixing/RoutingIntegratedHeadsetDriver40mW(16Ω/3.3V)LowNoisebiassupplyvoltageformicrophoneOn-chipfullfractional-NPLLInterfacesI2SdigitalinterfacePCMtimeslotassignment2-WireserialcontrolInterface(I2Cstyle;/Writecapable)LowPower,LowVoltageAnalogSupply:2.5Vto3.6VDigitalSupply:1.71Vto3.6VNominalOperatingVoltage:3.3VAdditionalfeatures5-bandGraphicEqualizerProgrammableALCADCNotchFilterProgrammableHighPassFilterDigitalA/D-D/APassthroughAEC-Q100&TS16949qualificationIndustrialtemperature:range:–40Cto+85CMonodataoutputonbothchannelsApplicationsAlltypesofwired/wirelesstelephonySecuritySystemsMobileTelephoneHands-freeKitsResidential&ConsumerIntercomsDigitalAudioInterfaceControlIFMicrophoneInterfaceOutputMixersADCDAC-1InputMixers&GainStageI2SPCM2-wireMIC-MIC+DigitalI/OAudioI/OADCFilterVolumeControlHPFNotchFilterDACFilterVolumeControlLimiterSPKOUT-SPKOUT+MOUTMicrophoneBiasMICBIASNAU8810emPowerAudio™DatasheetRevision1.2Page2of98January20113.PINCONFIGURATIONMIC-VSSSPKMCLKVDDAVDDDSPKOUT-SPKOUT+MOUTDACINFSBCLKVSSAVSSDADCOUTVDDSPKSDIOVREF2345678110151413121116920191817SCLKMetalPaddle(VSSA)MIC+MICBIASFigure1:20-PinQFNPackageNAU8810emPowerAudio™DatasheetRevision1.2Page3of98January20114.PINDESCRIPTIONPinName24-PinFunctionalityA/DPinTypeMICBIAS1MicrophoneBiasAOVDDA2AnalogSupplyAIVSSA3AnalogGroundAOVDDD4DigitalSupplyCoreDIVSSD5DigitalGroundDOADCOUT6DigitalAudioDataOutputDODACIN7DigitalAudioDataInputDIFS8FrameSyncDI/OBCLK9BitClockDI/OMCLK10MasterClockDISCLK11SPIor2-WireSerialClockDISDIO12SPIDataInor2-WireI/ODOMOUT13MONOOutputAOSPKOUT+14SpeakerPositiveOutputAOVSSSPK15SpeakerGroundAOSPKOUT-16SpeakerNegativeOutputAOVDDSPK17SpeakerSupplyAIVREF18DecouplinginternalanalogmidsupplyreferencevoltageAOMIC-19MicrophoneNegativeInputAIMIC+20MicrophonePositiveInputAITable1:PinDescriptionNotes1.The20-QFNpackageincludesabulkgroundconnectionpadontheundersideofthechip.ThisbulkgroundshouldbethermallytiedtothePCB,andelectricallytiedtotheanalogground.2.Unusedanaloginputpinsshouldbeleftasno-connection.3.Anyunuseddigitalinputpinmustbetiedhighorlowasappropriate.NAU8810emPowerAudio™DatasheetRevision1.2Page4of98January20115.BLOCKDIAGRAMFigure2:NAU8810GeneralBlockDiagramHPFALCNOTCHFILTERLIMITER(Sidetone)BYPASSADCDACVSSDVDDAVSSAVDDSPKVSSDVSSSPKBCLKCONTROLINTERFACEDACINADCOUTFSDIGITALAUDIOINTERFACESCLKSDIOPMICBSTGAIN[6:4](0x2F)=000PGAMT[6](0x2D)PMICBSTGAIN[6:4](0x2F)PGABST[8](0x2F)ΣMIC+MIC-NMICPGA[1](0x2C)PMICPGAVREFPGAGAIN(0x2D)-12dBto+35.25dBPGAEN[2](0x02)MOUTSPKOUT+SPKOUT-MOUTMXEN[3](0x03)SPKGAIN[5:0](0x36)DACSPK[0](0X32)DACMOUT[0](0x38)SPKMXEN[2](0x03)BYPMOUT[1](0x38)BYPSPK[1](0x32)SPKBST[2](0x31)MOUTBST[3](0x31)ΣΣ1.0X1.5X1.0X1.5X1.0X1.5XSPKMOUT[x:0](0xxx)MCLKVREFMICBIASPLLRRMICROPHONEBIASVDDAMICBIASEN[4](0x2F)NAU8810emPowerAudio™DatasheetRevision1.2Page5of98January20116.TableofContents1.GENERALDESCRIPTION..................................................................................................................................12.FEATURES.........................................................................................................................................................13.PINCONFIGURATION.......................................................................................................................................24.PINDESCRIPTION.............................................................................................................................................35.BL