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时间: 2019-12-24 20:29
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摘要:使用设计的Sallen-Key滤波器时,元件数量少,金钱,和电路板空间。简化与带通滤波器固定增益amplfiers的。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSKeywords:lowpassfilters,highpassfilters,filterdesigns,opampsasfilters,Sallen-KeyfilterJan22,2001APPLICATIONNOTE700Fixed-GainOpAmpsSimplifyFilterDesignAbstract:Uselesscomponentcount,money,andboardspacewhendesigningSallen-Keyfilters.Simplifybandpassfilterswithfixedgainamplfiers.Simplesecond-orderfiltersmeetmanyfilteringrequirements.Alow-orderlow-passfilter,forexample,isoftenadequateforantialiasinginADCapplicationsorforeliminatinghigh-frequencynoiseinaudioapplications.Similarly,alow-orderhigh-passfiltercaneasilyremovepower-supplynoise.Whenyoudesignsuchfilterswithbuilt-ingain,fixed-gainopampscansavespace,cost,andtime.Figur……