锁定同步正弦发电机涵盖三个几十年来的低失真

摘要：这种电路同步同时保持低THD，振幅的正弦波输出，通过三个几十年的频率（20Hz至20kHz）。Maxim>AppNotes>AudioCircuitsSignalGenerationCircuitsKeywords:testing,calibration,puresinewaves,sinewavegenerators,lowTHD,phase-lockedloops,PLL,binaryfrequencydividers,Aug17,2010switched-capacitorlowpassfilters,externalsynchronizationAPPLICATIONNOTE4504Locked-SyncSineGeneratorCoversThreeDecadeswithLowDistortionAbstract:Thiscircuitsynchronizesasinewaveoutputthroughthreedecadesoffrequency(20Hzto20kHz)whilemaintaininglowTHDandconstantamplitude.AsimilarversionofthisarticleappearedintheSeptember18,2009issueofEDNmagazine.Analogapplicationssuchastesting,calibration,andgeneralsystemoperationoftenrequireasinewaveformofaccurateamplitudeandfrequency,withlow