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描述
音频
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350 mw
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TPA321
SLOS312C–JUNE2000–REVISEDJUNE2004
350-mwmonoaudiopoweramplifierwithdifferentialinputs
•
fullyspecifiedfor3.3-vand5-voperation
•
WidePowerSupplyCompatibility
2.5v–5.5v
•
OutputPowerforR
l
=8
Ω
–350mWatV
dd
=5V
–250mWatV
dd
=3.3v
•
UltralowSupplyCurrentinShutdown
模式...0.15µa
•
thermalandshort-电路保护
•
表面-mountpackaging
–SOIC
–PowerPAD™MSOP
thetpa321isabridge-tiedload(btl)audiopoweramplifierdevelopedespeciallyforlow-voltageapplications
whereinternalspeakersarerequired.operatingwitha3.3-vsupply,thetpa321candeliver250mwof
continuouspowerintoabtl8-
Ω
loadatlessthan1%thd+nthroughoutvoicebandfrequencies.althoughthis
deviceischaracterizedoutto20khz,itsoperationwasoptimizedfornarrowerbandapplicationssuchascellular
通信.thebtlconfigurationeliminatestheneedforexternalcouplingcapacitorsontheoutputin
mostapplications,whichisparticularlyimportantforsmallbattery-poweredequipment.thisdevicefeaturesa
shutdownmodeforpower-sensitiveapplicationswithaquiescentcurrentof0.15µaduringshutdown.这
tpa321isavailableinan8-pinsoicsurface-mountpackageandthesurface-mountpowerpad™msop,哪个
reducesboardspaceby50%andheightby40%.
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2000–2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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