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1.2BasicToolsforInitialBoardPowerup
2SystemInterfaces
2.1PSUInterface
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SystemInterfaces
Figure4.TopCompositeViewofTAS5704EVM
•Upto26V,3Apowersupply(PVCC)
•5V,500mApowersupply(VIN)
•Bananacablesforpowersuppliesandspeakers
•OpticalorcoaxialcableforSPDIFinterfacebasedonsignalsource
•Two8Ωspeakers(BTL)or4Ωspeakers(SE).Resistiveloadscanalsobeused
•Optional:TAS5601EVM2(forsubwooferconnectionwhenusingBTLconfiguration)
ThischapterdescribestheTAS5704EVMboardinregardstopowersupply(PSU)andsysteminterfaces.
TheTAS5704EVMmoduleispoweredusingtwopowersupplysourcesa10–26V(PVCC)powersupply
anda5V(VIN)powersupply.The3.3Vvoltagelevelsaregeneratedontheboardusingvoltageregulators
fromVINsupply.
Note:Thelengthofpowersupplycablemustbeminimized.IncreasinglengthofPSUcableis
equaltoincreasingthedistortionfortheamplifierathighoutputlevelsandlowfrequencies.
Maximumoutputstagesupplyvoltagedependsonthespeakerloadresistance.Checktherecommended
maximumsupplyvoltageintheTAS5704datasheet(SLOS563).
SLOU224–April2008TA5704EVM4-ChannelDigitalAudioPowerAmplifierwithHardwareControl9
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