FEATURESDESCRIPTION
TLV320AIC31
SLAS497–DECEMBER2005
lowpowerstereoaudiocodecforportableaudio/telephony
•
StereoAudioDAC
thetlv320aic31isalow-powerstereo-audiocodec
withastereoheadphoneamplifier,aswellasmultiple
–100dbasignal-至-noiseratio
inputsandoutputs,programmableinsingle-endedor
–16/20/24/32-bitdata
全部地-differentialconfigurations.extensive
–SupportsRatesFrom8kHzto96kHz
寄存器-basedpowercontrolisincluded,enabling
–3d/bass/treble/eq/de-emphasiseffects
stereo48-khzdacplaybackaslowas14mwfrom
a3.3-vanalogsupply,makingitidealforportable,
•
StereoAudioADC
电池-poweredaudioandtelephonyapplications.
–92dbasignal-至-noiseratio
TherecordpathoftheTLV320AIC31contains
–SupportsRatesFrom8kHzto96kHz
integratedmicrophonebias,digitally-控制
•
SixAudioInputPins
立体的-microphonepre-放大,andautomaticgain
–twostereodifferential/单独的-endedinputs
控制(agc),withmix/muxcapabilityamongthe
multipleanaloginputs.theplaybackpathincludes
•
SixAudioOutputDrivers
混合/muxcapabilityfromthestereodacandselected
–stereo8-
Ω
,500mw/channelspeakerdrive
输入,throughprogrammablevolumecontrols,tothe
能力
variousoutputs.
–stereofully-differentialorsingle-结束
thetlv320aic31containsfourhigh-poweroutput
HeadphoneDrivers
driversaswellastwofullydifferentialoutputdrivers.
–FullyDifferentialStereoLineOutputs
thehigh-poweroutputdriversarecapableofdriving
avarietyofloadconfigurations,includinguptofour
•
lowpower:14-mwstereo,48-khzplayback
channelsofsingle-ended16-
Ω
headphonesusing
with3.3-vanalogsupply
交流-couplingcapacitors,orstereo16-
Ω
headphonesin
•
programmableinput/outputanaloggains
acap-lessoutputconfiguration.inaddition,pairsof
•
automaticgaincontrol(agc)forrecord
driverscanbeusedtodrive8-
Ω
speakersinaBTL
configurationat500mwperchannel.
•
ProgrammableMicrophoneBiasLevel
•
ProgrammablePLLforFlexibleClock
ThestereoaudioDACsupportssamplingratesfrom
8kHzto96kHzandincludesprogrammabledigital
一代
filteringinthedacpathfor3d,bass,treble,
•
I
2
CControlBus
midrangeeffects,speakerequalization,和
•
AudioSerialDataBusSupportsI
2
s,
de-emphasisfor32khz,44.1khz,and48khzrates.
left/正确的-justified,dsp,andtdmmodes
thestereo-audioadcsupportssamplingratesfrom
8kHzto96kHzandisprecededbyprogrammable
•
ExtensiveModularPowerControl
gainamplifiersprovidingupto+59.5dbanaloggain
•
powersupplies:
forlow-levelmicrophoneinputs.
–analog:2.7v–3.6v
TheserialcontrolbussupportstheI
2
cprotocol,当
–digitalcore:1.525v–1.95v
theserial-audiodatabusisprogrammablefori
2
s,
–digitali/o:1.1v–3.6v
left/rightjustified,dsp,ortdmmodes.ahighly
programmablePLLisincludedforflexibleclock
•
availablepackages:5
×
5mm,32-pinqfn
generationandsupportforallstandardaudiorates
fromawiderangeofavailablemclks,varyingfrom
512khzto50mhz,withspecialattentionpaidtothe
mostpopularcasesof12mhz,13mhz,16mhz,
19.2mhz,and19.68mhzsystemclocks.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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