FEATURESAPPLICATIONS
描述
pcm1780,pcm1781,pcm1782
SLES132A–MARCH2005–REVISEDAPRIL2005
24-位,192-khzsampling,enhancedmultilevel,delta-sigma,
audiodigital-至-analogconverter
•
一个/vreceivers
•
24-bitresolution
•
DVDMoviePlayers
•
analogperformance(v
CC
=5v):
•
dvdadd-oncardsforhigh-endpcs
–dynamicrange:106db
•
DVDAudioPlayers
–snr:106db,典型
•
HDTVReceivers
–thd+n:0.002%,典型
•
CarAudioSystems
–full-scaleoutput:3.9vp-p,典型
•
otherapplicationsrequiring24-bitaudio
•
4×/8×oversamplingdigitalfilter:
–stop-bandattenuation:–50db
–pass-bandripple:±0.04db
thepcm1780/81/82isacmos,大而单一的,inte-
•
samplingfrequency:5khzto200khz
gratedcircuit,whichincludesstereodigital-至-相似物
convertersandsupportcircuitryinasmall16-含铅的
•
systemclock:128f
S
,192f
S
,256f
S
,384f
S
,
ssoppackage.thedataconvertersuseti’sen-
512f
S
,768f
S
,1152f
S
WithAutodetect
hancedmultileveldelta-sigmaarchitecturetoachieve
•
softwarecontrol(pcm1780,pcm1782):
excellentdynamicperformanceandimprovedtoler-
–accepts16-,18-,20-,and24-bitaudiodata
ancetoclockjitter.thepcm1780/81/82accepts
industrystandardaudiodataformatswith16-至
–formats:正确的-justified,i
2
s,和
24-bitdata,providingeasyinterfacingtoaudiodsp
left-justified
anddecoderchips.samplingratesupto200khzare
–digitalattenuation:modeselectable
supported.thepcm1780/82providesafullsetof
•
0dbto–63db,0.5db/步伐
用户-programmablefunctionsthroughathree-线
serialcontrolport,whichsupportsregisterwrite
•
0dbto–100db,1db/步伐
功能.thepcm1781providesasubsetof
–digitalde-emphasis
用户-programmablefunctionsthroughfourcontrol
–digitalfilterrolloff:sharporslow
管脚.
–SoftMute
thepcm1780ispin-compatiblewiththepcm1680
–ZeroFlagsforEachOutput
(8-channeldac).
–open-drainoutputzeroflag(pcm1782)
•
hardwarecontrol(pcm1781):
–I
2
sand16-bitword,正确的-justified
–digitalde-emphasis
–SoftMute
–zeroflagforl-,r-channelcommonoutput
•
powersupply:5-vsinglesupply
•
小,16-leadssoppackage(150mil)
•
管脚-compatiblewithpcm1680
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
systemtwo,audioprecisionaretrademarksofaudioprecision,公司
alltrademarksarethepropertyoftheirrespectiveowners.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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