Equalizing Techniques Flatten DAC Frequency Response

Abstract:Digital-to-analogconverters(DACs)convertdigitaldatatoanalogvoltageorcurrentinapplicationssuchasinstrumentationandwirelesscommunications.ADAC'soutputfrequencygenerallyrangesfromDCtolessthanfS/2,wherefSistheinput-updatingfrequency.TheoutputfrequencyresponseformostDACs,however,rollsoffaccordingtothesin(x)/x(sinc)frequency-responseenvelope.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSBASESTATIONS/WIRELESSINFRASTRUCTUREDIGITALPOTENTIOMETERSHIGH-SPEEDSIGNALPROCESSINGWIRELESS,RF,ANDCABLEKeywords:preequalization,postequalization,frequencyresponse,sinx/x,sincfunction,interpolation,Nyquist,imageJun01,2006frequency,reconstructionfilter,FIR,roll-offAPPLICATIONNOTE3853EqualizingTechniquesFlattenDACFrequencyResponseAbstract:Digital-to-analogconverters(DACs)convertdigitaldatatoanalogvoltageorcurrentinapplicationssuchasinstrumentationandwirelesscommunications.ADAC'soutputfrequencygenerallyrangesfromDCtolessthanfS/2,wherefSistheinput-updatingfrequency.TheoutputfrequencyresponseformostDACs,however,rollsoffaccordingtothesin(x