tm
www.ti.com
特点
应用程序
描述
pvdd − 供应 v旧 − v
0
10
20
30
40
50
60
70
80
90
100
110
120
0 4 8 12 16 20 24 28 32
p
o
− 输出 电源 − w
8
Ω
4
Ω
t
c
= 75
°
c
thd+n @ 10%
6
Ω
G002
TAS5142
SLES126B–DECEMBER2004–REVISEDMAY2005
STEREODIGITALAMPLIFIERPOWERSTAGE
deliverhigh-质量,高-efficiencyaudioamplification
withprovenemicompliance.thisdevicerequirestwo
•
2×100wat10%thd+ninto4-
Ω
BTL
(1)
电源供应,at12vforgvddandvdd,andat
•
2×80wat10%thd+ninto6-
Ω
BTL
32vforpvdd.thetas5142doesnotrequire
电源-upsequencingduetointernalpower-onreset.
•
2×65wat10%thd+ninto8-
Ω
BTL
Theefficiencyofthisdigitalamplifierisgreaterthan
•
4×40wat10%thd+ninto3-
Ω
se
90%into6
Ω
,whichenablestheuseofsmaller
•
4×30wat10%thd+ninto4-
Ω
se
powersuppliesandheatsinks.
•
1×160wat10%thd+ninto3-
Ω
PBTL
TheTAS5142hasaninnovativeprotectionsystem
•
1×200wat10%thd+ninto2-
Ω
PBTL
(1)
integratedon-芯片,safeguardingthedeviceagainsta
widerangeoffaultconditionsthatcoulddamagethe
•
>100dbsnr(一个-加权)
系统.thesesafeguardsareshort-电路保护,
•
&指示灯;0.1%thd+nat1w
overcurrentprotection,undervoltageprotection,和
•
twothermallyenhancedpackageoptions:
overtemperatureprotection.thetas5142hasanew
–dkd(36-pinpsop3)
proprietarycurrent-limitingcircuitthatreducesthe
possibilityofdeviceshutdownduringhigh-levelmusic
–ddv(44-pinhtssop)
瞬变.anewprogrammableovercurrentdetector
•
高-efficiencypowerstage(>90%)与
allowstheuseoflower-costinductorsinthedemodu-
140-m
Ω
OutputMOSFETs
lationoutputfilter.
•
电源-onresetforprotectiononpowerup
BTLOUTPUTPOWERvsSUPPLYVOLTAGE
withoutanypower-supplysequencing
•
integratedself-protectioncircuitsincluding
欠压,超温,过载,
ShortCircuit
•
ErrorReporting
•
EMICompliantWhenUsedWith
RecommendedSystemDesign
•
IntelligentGateDrive
•
迷你/microaudiosystem
•
DVDReceiver
•
HomeTheater
thetas5142isathird-世代,高-执行-
标准,integratedstereodigitalamplifierpowerstage
withanimprovedprotectionsystem.thetas5142is
(1)itisnotrecommendedtodrive200w(合计
capableofdrivinga4-
Ω
桥梁-tiedload(btl)atup
电源)intotheddvpackagecontinuously.
to100Wperchannelwithlowintegratednoiseatthe
Formultichannelsystemsthatrequiretwo
输出,lowthd+nperformance,andlowidlepower
channelstobedrivenatfullpowerwiththe
ddvpackageoption,itisrecommendedto
耗散.
designthesystemsothatthetwochannels
alow-成本,高-fidelityaudiosystemcanbebuilt
areintwoseparatedevices.
usingatichipset,comprisingamodulator(e?.g.,
PurePathDigital™
tas5508)andthetas5142.thissystemonlyre-
quiresasimplepassiveLCdemodulationfilterto
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
purepathdigital,powerpadaretrademarksoftexasinstruments.
alltrademarksarethepropertyoftheirrespectiveowners.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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