1.2Overview
TAS5518C
8-ChannelDigitalAudioPWMProcessor
SLES238A–SEPTEMBER2008–REVISEDJULY2009
www.ti.com
SupportforEnhancedDynamicRangein
–AdjustableModulationLimit
High-PerformanceApplications
TheTAS5518Cisan8-channeldigitalpulse-widthmodulator(PWM)thatprovidesbothadvanced
performanceandahighlevelofsystemintegration.TheTAS5518Cisdesignedtointerfaceseamlessly
withmostaudiodigitalsignalprocessors.TheTAS5518Cautomaticallyadjustscontrolconfigurationsin
responsetoclockanddataratechangesandidleconditions.ThisenablestheTAS5518Ctoprovidean
easy-to-usecontrolinterfacewithrelaxedtimingrequirements.
TheTAS5518CcandriveeightchannelsofH-bridgepowerstages.TexasInstrumentspowerstageparts
TAS5111,TAS5112,orTAS5182withFETsaredesignedtoworkseamlesslywiththeTAS5518C.The
TAS5518Csupportseitherthesingle-endedorbridge-tied-loadconfiguration.TheTAS5518Calso
providesahigh-performance,differentialoutputtodriveanexternal,differential-input,analogheadphone
amplifier(suchastheTPA112).
TheTAS5518CusesADmodulationoperatingata384-kHzswitchingratefor48-,96-,and192-kHzdata.
The8×oversamplingcombinedwiththefifth-ordernoiseshaperprovidesabroad,flatnoisefloorand
excellentdynamicrangefrom20Hzto20kHz.
TheTAS5518Cisaclockedslave-onlydevice.TheTAS5518CreceivesMCLK,SCLK,andLRCLKfrom
othersystemcomponents.TheTAS5518Cacceptsmasterclockratesof128,192,256,384,512,and
768f
S
.TheTAS5518Cacceptsa64-f
S
bitclock.
TheTAS5518Callowsforextendingthedynamicrangebyprovidingapower-supply,volume-control
(PSVC)outputsignal.
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Not Recommended For New Designs
