TheSTA369BWSisanintegratedsolutionofdigitalaudioprocessing,digitalamplifiercontrolsandpoweroutputstagetocreateahigh-powersingle-chipFFXdigitalamplifierwithhigh-qualityandhigh-efficiency.ThreechannelsofFFXprocessingareprovided.TheFFXprocessorimplementstheternary,binaryandbinarydifferentialprocessingcapabilitiesofthefullFFXprocessor.TheSTA369BWSispartoftheSoundTerminal®familythatprovidesfulldigitalaudiostreamingtothespeakersandofferscosteffectiveness,lowpowerdissipationandsoundenrichment.Thepowersectionc***istsoffourindependenthalf-bridges.Thesecanbeconfiguredviadigitalcontroltooperateindifferentmodes.Forexample,2.1channelscanbeprovidedbytwohalf-bridgesandasinglefull-bridge,supplyingupto2x9W+1x20Wofoutputpowerortwochannelscanbeprovidedbytwofull-bridges,supplyingupto2x20Wofoutputpower.TheICcanalsobeconfiguredas2.1channelswith2x20WsuppliedbythedeviceplusadriveforanexternalFFXpoweramplifier,suchasSTA533WForSTA515W.OneotheroptionistoconfiguretheICash***ingonechanneloutputthatcanbeprovidedbyparallelBTLtoobtain1x40Wofoutputpower.InthisconfigurationtheCONFIGpinmustbeconnectedtoVDD.AlsoprovidedintheSTA369BWSareafullassortmentofdigitalprocessingfeatures.Thisincludesupto8programmablebiquads(EQ)perchannel.Specialdigitalsignalprocessingtechniquesare***ailabletomanagelow-frequencyquantizationnoiseinfilterswithverylowcut-offfrequencies.Thecoefficientrange-4to+4allowseasyhigh-shelffilterusageandbettersoundshaping.***ailablepresetsenableatime-to-marketadvantagebysubstantiallyreducingtheamountofsoftwaredevelopmentneededforfuncti***suchasaudiopresetvolumeloudness,presetvolumecurvesandpresetEQsettings.TherearealsonewadvancedAMradiointerferencereductionmodes.Dual-bandDRCdynamicallyequalizesthesystemtoprovidelinearfrequencyspeakerresp***eregardlessofoutputpowerlevel.Thisfeatureseparatestheaudiofrequencybandintotwosub-bandsindependentlyprocessedtoprovidebettersoundclarityandto***oidspeakersaturation.Theserialaudiodatainputinterfaceacceptsallpossibleformats,includingthepopularI2Sformat.Thehigh-qualityconversionfromPCMaudiotoFFXPWMswitchingprovidesover100dBofSNRandofdynamicrange.ThenewF3X™modulationiscapableofdigitallyfilteringthePWMcarriertosimplifyexternalfilteringrequirements,AMinterferenceandEMI.F3X™isimplementedintheauxiliaryoutputofSTA369BWSanditisspecificallydesignedforapplicationwhereasimpleop-ampcanbeusedtodriveanauxiliaryheadphoneline.)