数字电位器手动操作不需要微处理器

摘要：操作无需使用微控制器的数字电位。手动增加一个简单的按钮电路向上/向下。完善的手动控制，需要设置一个特定的水平，成本敏感的应用。

Maxim/Dallas>AppNotes>DIGITALPOTENTIOMETERSGENERALENGINEERINGTOPICSKeywords:digitalpotentiometer,digipot,watchdogtimer,switchdebouncer,esdprotection,digitalpots,Jun01,2001potentiometers,pushbuttoncircuitAPPLICATIONNOTE1118ManuallyOperatedDigitalPotentiometerDoesn'tNeedaMicroprocessorOperateadigitalpotentiometerwithouttheuseofamicrocontroller.Manuallyincrementup/downwithasimplepush-buttoncircuit.Perfectforcostsensitiveapplicationswheremanualcontrolsarerequiredtosetaparticularlevel.DigitalpotentiometerICssuchastheMAX5160andMAX5161aregoodreplacementsformechanicaltypes.ButtheseICsaredesignedtoworkwithmicrocontrollers.Inthismanuallyoperateddigitalpotentiometer,twopushbuttonsc