均衡技术拼合DAC频率响应

摘要：数字-模拟转换器（DAC）将数字数据转换成模拟电压或电流的仪器和无线通信等应用。一个DAC的输出频率范围从DC到低于FS/2，其中FS是输入更新频率。然而，对于大多数的DAC输出频率响应，推出了根据SIN（X）/X（SINC）频率响应信封。

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