Datasheet

Burr-BrownAudio
1
FEATURES
APPLICATIONS
DESCRIPTION
PCM2704, ,PCM2705
PCM2706,PCM2707
www.ti.com
.......................................................................................................................................................SLES081FJUNE2003REVISEDJANUARY2009
STEREOAUDIODACWITHUSBINTERFACE,
SINGLE-ENDEDHEADPHONEOUTPUTANDS/PDIFOUTPUT
ExternalROMInterface(PCM2704/6)
2345
On-ChipUSBInterface:SerialProgrammingInterface(PCM2705/7)
NoNeedofDedicatedDeviceDriverI
2
SInterface(SelectableonPCM2706/7)
WithFull-SpeedTransceiversPackage:
FullyCompliantWithUSB1.1Specification28-PinSSOP(PCM2704/5)
CertifiedbyUSB-IF32-PinTQFP(PCM2706/7)
PartiallyProgrammableDescriptors
AdaptiveIsochronousTransferfor
USBHeadphones
Playback
USBAudioSpeaker
Bus-PoweredorSelf-PoweredOperation
USBCRT/LCDMonitor
SamplingRate:32,44.1,48kHz
USBAudioInterfaceBox
On-ChipClockGeneratorWithSingle12-MHz
USB-FeaturedConsumerAudioProduct
ClockSource
SinglePowerSupply:
Bus-Powered:5V,Typical(V
BUS
)
ThePCM2704/5/6/7isTI'ssingle-chipUSBstereo
Self-Powered:3.3V,Typical
audioDACwithUSB-compliantfull-speedprotocol
16-BitDelta-SigmaStereoDAC
controllerandS/PDIF.TheUSB-protocolcontroller
workswithnosoftwarecode,butUSBdescriptors
AnalogPerformanceat5V(Bus-Powered),
canbemodifiedinsomeparts(forexample,vendor
3.3V(Self-Powered):
ID/productID)throughtheuseofanexternalROM
THD+N:0.006%R
L
>10k,
(PCM2704/6),SPI(PCM2705/7),oronrequest.
(1)
Self-Powered
ThePCM2704/5/6/7employsSpAct™architecture,
TI'suniquesystemthatrecoverstheaudioclockfrom
THD+N:0.025%R
L
=32
USBpacketdata.On-chipanalogPLLswithSpAct
SNR=98dB
enableplaybackwithlowclockjitter.
DynamicRange:98dB
P
O
=12mW,R
L
=32
OversamplingDigitalFilter
Pass-BandRipple=±0.04dB
Stop-BandAttenuation=–50dB
Single-EndedVoltageOutput
AnalogLPFIncluded
MultipleFunctions:
UptoEightHumanInterfaceDevice(HID)
Interfaces(DependingonModeland
(1)ThemodificationoftheUSBdescriptorthroughexternalROM
Settings)
orSPImustcomplywithUSB-IFguidelines,andthevendor
IDmustbeyourownIDasassignedbytheUSB-IF.The
SuspendFlag
descriptoralsocanbemodifiedbychangingamask;contact
S/PDIFOutWithSCMSyourrepresentativefordetails.
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2SpActisatrademarkofTexasInstruments.
3SystemTwo,AudioPrecisionaretrademarksofAudioPrecision,Inc.
4I2SisatrademarkofNXPSemiconductors.
5Allothertrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2003–2009,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
PCM2704 and PCM2705
Not Recommended For New Designs

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