Optimizing Audio Bridged Tied Load Amplifiers

Abstract:Thisaudiobridge-tiedload(BTL)amplifierapplicationnotedescribesauniquearchitecturethatminimizesthedifferentialoutputdistortionandnoise(THD+N).Maxim>DesignSupport>AppNotes>AmplifierandComparatorCircuits>APP1122Maxim>DesignSupport>AppNotes>AudioCircuits>APP1122Keywords:audiobridgedamplifier,BTL,audioamplifier,THD+N,bridgedtiedload,lownoise,differentialoutputdriveJun24,2002APPLICATIONNOTE1122OptimizingAudioBridgedTiedLoadAmplifiersAbstract:Thisaudiobridge-tiedload(BTL)amplifierapplicationnotedescribesauniquearchitecturethatminimizesthedifferentialoutputdistortionandnoise(THD+N).Low-voltagesystemsdrivingloudspeakersoftenemployabridged-amplifierconfigurationthateffectivelydoublesthevoltageswingatthetransducer(s