摘要:通过钻研Sallen-Key滤波器的元件灵敏度更深入一点,我们发现在数学分析“甜蜜点”,使简单的,单一的运算放大器,过滤器,其性能的竞争对手,更复杂的过滤器,设计。在延长的Sallen-Key滤波器的效用,这种做法是有益的。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSAUDIOCIRCUITSFILTERCIRCUITS(ANALOG)Keywords:opampfilters,Sallen-Keyfilters,highpassfilter,opamps,singleopampMar21,2001APPLICATIONNOTE738MinimizingComponent-VariationSensitivityinSingleOpAmpFiltersAbstract:BydelvingalittlemoredeeplyintotheSallen-Keyfilter'scomponentsensitivities,wediscovera"sweetspot"inthemathematicalanalysisthatallowsthedesignofsimple,singleopampfilterswhoseperformancerivalsthatofmorecomplicatedfilters.ThisapproachhasbeenusefulinextendingtheutilityofSallen-Keyfilters.Dozensoffiltertopologieshavebeendevisedovertheyears,eachwithitsownadvantages.Yetengineersoftenrelyonasmallbutpopular
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