创建一个与音频前置衰减DS1802数字电位器按钮

摘要：DS1802音频电位器包含两个数字控制电位器和功能产生每递增1分贝变化对数锥度。本应用笔记介绍使用它在一个按钮控制音频前置放大电路。

Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSAUDIOCIRCUITSDIGITALPOTENTIOMETERSKeywords:digitalpotentiometers,preamplifier,preamp,digitalpot,xicorMay03,2002APPLICATIONNOTE161UsingaDS1802Push-ButtonDigitalPotentiometertoCreateanAudioPreampwithAttenuatorAbstract:TheDS1802audiopotentiometercontainstwodigitallycontrolledpotentiometersandfeaturesalogarithmictaperthatproducesa1dBchangeperincrement.Thisapplicationnotedescribesusingitinapush-buttoncontrolledaudiopreamplifiercircuit.IntroductiontotheDS1802DualLogarithmicAudioPotentiometerTheDS1802AudioPotentiometercontainstwodigitally-controlledpotentiometersandfeaturesalogarithmictaperthatproducesa1dBchan