使用 DS1802 点击式数字电位器与衰减器创建音频可预置

摘要：DS1802音频电位器包含两个电位器，和功能产生的增量每1杜比变化的对数锥度。本应用指南描述了在按钮控制音频前置放大器电路中使用它。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSAUDIOCIRCUITSDIGITALPOTENTIOMETERSKeywords:digitalpotentiometers,preamplifier,preamp,digitalpot,xicorMay03,2002APPLICATIONNOTE161UsingaDS1802Push-ButtonDigitalPotentiometertoCreateanAudioPreampwithAttenuatorAbstract:TheDS1802audiopotentiometercontainstwodigitallycontrolledpotentiometersandfeaturesalogarithmictaperthatproducesa1dBchangeperincrement.Thisapplicationnotedescribesusingitinapush-buttoncontrolledaudiopreamplifiercircuit.IntroductiontotheDS1802DualLogarithmicAudioPotentiometerTheDS1802AudioPotentiometercontainstwodigitally-controlledpotentiometersandfeaturesalogarithmictaperthatproducesa1dBchan