摘要：本应用笔记探讨输出滤波器的D类音频放大器的性能的影响。如MAX4295和MAX4297对他们更传统的AB类同行提供提高效率开关模式放大器。通过了解这些设备，调制噪声频谱和他们需要推动扬声器负载的运作，这是可以完全消除输出过滤器，同时保留了D类放大器的效率方面的好处。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSAUDIOCIRCUITSKeywords:ClassD,audioamplifiers,switchingamplifer,outputfilter,modulationnoise,PWM,filterless,Apr01,2002amplifersAPPLICATIONNOTE624ClassDAudioAmplifierOutputFilterOptimizationAbstract:ThisapplicationnoteexaminestheeffectoftheoutputfilteronaudioClassDamplifierperformance.Switch-modeamplifierssuchastheMAX4295andMAX4297offerimprovedefficiencyovertheirmoretraditionalClassABcounterparts.Byunderstandingtheoperationofthesedevices,themodulationnoisespectrumandtheloudspeakerloadstheyarerequiredtodrive,itispossibletocompletelyeliminatetheoutputfilterwhileretainingtheefficiencybenefitsofClassDamplifiers.Thisarticl
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