Pots, Pans, Logs, and Linear Digital Pots Create Arbitrary Voltage Curves

Abstract:Lineardigitalpotentiometerscanbeusedtomakearbitraryvoltagecurvesandwaveforms.Analternativenameforadigitalpotisa"string"digital-to-analogconverter(DAC).Loggingpotsistheartofmakingalinearpotproducealogarithmicresponseforapplicationssuchasaudio.Maxim>AppNotes>A/DandD/AConversion/SamplingCircuitsAudioCircuitsDigitalPotentiometersGeneralEngineeringTopicsKeywords:digitalpots,potentiometer,voltagedivider,sensorconditioning,ratiometric,precisionresistor,Dec11,2008resistance,ratio,singlepowersupply,temperaturecoefficient,lowdrift,linear,log,logarithmic,arbitrarywaveformcurve,stringDAC,audioAPPLICATIONNOTE4346Pots,Pans,Logs,andLinearDigitalPotsCreateArbitraryVoltageCurvesBy:BillLaumeisterAbstract:Lineardigitalpotentiometerscanbeusedtomakearbitraryvoltagecurvesandwaveforms.Analternativenameforadigitalpotisa"string"digital-to-analogconverter(DAC).Loggingpotsistheartofmakingalinearpotproducealogarithmicresponsefora