标签: 频线
相关资源
-
低噪声音频线路设计AMPLIFIERANDCOMPARATORCIRCUITSAUDIOCIRCUITSFILTERCIRCUITS(ANALOG)POWER-SUPPLYCIRCUITSJul01,2001LowNoiseAudioPowerSupplyCircuitAudioapplicationnotedescribesasimple,compactschemethatprovidesalownoise,lowripplepowersourceforuseinaudioamplifiers,microphones,headphoneamplifiers,CODECsandotheraudiocircuits.Thecircuitshowninthefigurebelowreducesnoiseandripplevoltageby40dBoverthe100Hzto20kHzaudiorange.Itprovidesacleansourceof5Vpowerfordrivingaudiocircuitsinportableapplicationssuchascellularphonesandmultimedianotebookcomputers.Mostlinearregulatorsrejectnoiseonlyupto1000Hzorso,andthebulkofalow-frequencypassivefilterisunwelcomeinportableapplications.Thiscompactcircuitactivelyco……
