最大限度地减少外部电阻电位器载入

摘要：本文讨论了如何改善线性度（由于雨刷加载）和中档的VCO控制应用中的数字电位器的频率响应，由H和W的增加一个外部电阻

Maxim>Designsupport>Appnotes>DigitalPotentiometers>APP2095Maxim>Designsupport>Appnotes>GeneralEngineeringTopics>APP2095Keywords:digitalpot,digitalpotentiometers,lineardigitalpots,digipots,VCOcontrol,potentiometerJun02,2003APPLICATIONNOTE2095ExternalResistorMinimizesDigipotLoadingBy:LeoSahlstenAbstract:Thisarticlediscusseshowtoimprovelinearity(duetoloadingofthewiper)andmid-rangefrequencyresponseofadigitalpotentiometerinVCOcontrolapplicationsbyaddingasingleexternalresistorbetweenHandW.DigitalpotentiometerICs(digitalpots,ordigipots)areconvenientforcontrollingvoltage-c