标签: lowpass

Lesson5Low-passFilters.ppt

LTC1563系列滤波产品可轻松实现提供设计结果，易用性、一致性和设计的灵活性使LTC1563成为滤波设计应用中的最适合的元件。advertisementReplaceDiscreteLowpassFilterswiththeLTC1563ZeroDesignEffort,TwoItemBoMandNoSurprises……

LT1568独特的拓扑结构和主/被动元件有助于高频电路和系统中的实现。LT1568在I/O应用中可作为一款简单匹配的二阶或三阶低通滤波器，或者通过外部的5%精度的电容，实现四阶椭圆低通滤波器、精确的双路二阶或三阶或单路四阶带通滤波器。advertisementAPrecisionActiveFilterBlockwithRepeatablePerformanceto10MHz……

Thisultra-low-noiseLDOcombineslow-noisecomponentswithfilteringtoachieveanoutputnoiseperformanceof6nV/at1kHz.……

Abstract:Acommonviewholdsthatdigitalcircuitsjustworknaturally,butanalogcircuitsarehardtoimplement.Thereistruthtothatoldbelief—analoginterfaceisanexpertsubjectthatrequirestraining.Itis,moreover,alwaysbettertoavoidanissuethantotrytosolveitlater.Thisispreciselywhyweshouldtakeadvantageofsomebasicconceptsthatexperiencedanalogengineersperformasareflex.Thisapplicationnoteprovidessomebasicremindersandconceptsaboutamplifiersandfiltersforyoutoconsiderduringadesign.Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4993Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4993Maxim>Designsupport>Appnotes>AnalogSwitchesandMultiplexers>APP4993Keywords:digitalpotentiometer,lowpassfilter,filter,low-passfilter,lowpassfilte,antialiasing,sampleddatasystem,folded,Nyquist,dataconverters,spectrum,harmonics,FFT,ADC,convolution,DAC,opamps,RC,LC,ButterworthMar08,2011APPLICATIONNOTE4993ReducetheChancesofHumanError:Part2,SuperAmpsandFiltersforAnalogInterfaceBy:BillLaumeister,StrategicApplicationsEngineerAb……

Abstract:Addingoptimizationcircuitrytoalowpassfilterallowsthefiltertoadjustitscutofffrequencydynamically,preservingthestep-responsetimeforrelativelylowcutofffrequencies.Maxim/Dallas>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSFILTERCIRCUITS(ANALOG)Keywords:lowpassfilter,stepresponse,time-domainresponse,signalconditioning,switched-capacitorfilter,Apr26,2004SCfilterAPPLICATIONNOTE3203LowpassFilterHasImprovedStepResponseAddingoptimizationcircuitrytoalowpassfilterallowsthefiltertoadjustitscutofffrequencydynamically,preservingthestep-responsetimeforrelativelylowcutofffrequencies.Acommonproblemwhendesigninglowpassfiltersforsignalconditioningistheireffectonthesystem'stime-domainresponse.Becausepushingthecutofffrequencylowerslowsthestepresponse,thesystemmayfailtorecognizesignificantchangesintime.TheFigure1circuitallowslowercutofffrequencies……

摘要：这种电路同步同时保持低THD，振幅的正弦波输出，通过三个几十年的频率（20Hz至20kHz）。Maxim>AppNotes>AudioCircuitsSignalGenerationCircuitsKeywords:testing,calibration,puresinewaves,sinewavegenerators,lowTHD,phase-lockedloops,PLL,binaryfrequencydividers,Aug17,2010switched-capacitorlowpassfilters,externalsynchronizationAPPLICATIONNOTE4504Locked-SyncSineGeneratorCoversThreeDecadeswithLowDistortionAbstract:Thiscircuitsynchronizesasinewaveoutputthroughthreedecadesoffrequency(20Hzto20kHz)whilemaintaininglowTHDandconstantamplitude.AsimilarversionofthisarticleappearedintheSeptember18,2009issueofEDNmagazine.Analogapplicationssuchastesting,calibration,andgeneralsystemoperationoftenrequireasinewaveformofaccurateamplitudeandfrequency,withlow……

摘要：亚历山大·贝尔1881年申请专利双绞线。我们仍在使用今天因为他们工作得很好。此外，我们在我们的世界内有令人难以置信的计算机电源的优势。电路模拟器和筛选器的设计程序可供很少或没有成本。我们结合产生的无线电频率干扰(RFI)和电磁干扰(EMI)壮观排斥反应的双绞线和低通滤波器。我们也说明了如何生成可自定义的差动放大器精密电阻阵列的使用。精密电阻器设置增益和共模排斥反应的比例，虽然我们选择的频率响应。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>A/DandD/AConversion/SamplingCircuits>APP4644Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>AmplifierandComparatorCircuits>APP4644Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>CommunicationsCircuits>APP4644Keywords:twistedpair,differentialinstrumentationamplifier,precisionresistors,cancellinginterference,RFI,EMI,radiofrequency,electromagnetic,lowpassfilter,cleansignals,FPGAJun13,2012APPLICATIONNOTE4644UseaTwistandOtherPopularWirestoReduceEMI/RFIBy:BillLaumeister,Strateg……

摘要：本应用笔记检查方法，以减少不良副作用，如串扰和不准确的，Teridian公司的Maxim产品组合™电能计量IC。在简要回顾ADC输入，本文讨论的计量IC，以及使用铁氧体磁珠，以减少RF敏感度不同的电容器和电阻的影响。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>EnergyMeasurement&Metering>APP5292Keywords:meteringIC,analoginput,filter,componentselection,LPF,ferrites,capacitors,inverter,solar,inter-harmonics,noiserejection,lowpassfilter,RFnoiseJun04,2012APPLICATIONNOTE5292ExternalFiltersfortheAnalogInputsofMeteringICsBy:JPJunkerJun04,2012Abstract:Thisapplicationnoteexamineswaystoreduceadversesideeffects,suchascrosstalkandinaccuracies,intheMaximportfolioofTeridianenergymeteringICs.AfterbrieflyreviewingtheADCinputs,thisarticlediscussestheeffectofdifferentcapacitorsandresistorsonmetering……

摘要：亚历山大·贝尔1881年申请专利双绞线。我们仍然使用它们今天因为他们工作得这么好。另外我们在我们的世界有了令人难以置信的计算机电源的优势。很少或没有成本，供电路模拟器和筛选器的设计程序。我们结合产生的无线电频率干扰(RFI)和电磁干扰(EMI)壮观排斥的双绞线和低通滤波器。我们还说明了使用的精密电阻阵列，以产生一个可定制的微分放大器。精密电阻器设置增益和共模排斥反应的比例，而我们选择的频率响应。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>A/DandD/AConversion/SamplingCircuits>APP4644Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>AmplifierandComparatorCircuits>APP4644Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>CommunicationsCircuits>APP4644Keywords:twistedpair,differentialinstrumentationamplifier,precisionresistors,cancellinginterference,RFI,EMI,radiofrequency,electromagnetic,lowpassfilter,cleansignals,FPGAJun13,2012APPLICATIONNOTE4644UseaTwistandOtherPopularWirestoReduceEMI/RFIBy:BillLaumeister,Strateg……

摘要：亚历山大·格雷厄姆·贝尔在1881年专利双绞线。我们今天仍然使用他们，因为他们的工作这么好。此外，我们必须在我们的世界令人难以置信的电脑电源的优势。电路仿真器和过滤器的设计方案有很少或根本没有成本。我们结合双绞线和低通滤波器产生的无线电频率干扰（RFI）和电磁干扰（EMI）的壮观拒绝。我们也说明了使用精密电阻阵列产生一个可定制的差分放大器。精密电阻设置增益和共模抑制比，而我们选择的频率响应。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>A/DandD/AConversion/SamplingCircuits>APP4644Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>AmplifierandComparatorCircuits>APP4644Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>CommunicationsCircuits>APP4644Keywords:twistedpair,differentialinstrumentationamplifier,precisionresistors,cancellinginterference,RFI,EMI,radiofrequency,electromagnetic,lowpassfilter,cleansignals,FPGAJun13,2012APPLICATIONNOTE4644UseaTwistandOtherPopularWirestoReduceEMI/RFIBy:BillLaumeister,Strateg……

摘要：添加一个低通滤波器的优化电路，使过滤器动态地调整其截止频率，保持相对较低的截止频率阶跃响应时间。Maxim/Dallas>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSFILTERCIRCUITS(ANALOG)Keywords:lowpassfilter,stepresponse,time-domainresponse,signalconditioning,switched-capacitorfilter,Apr26,2004SCfilterAPPLICATIONNOTE3203LowpassFilterHasImprovedStepResponseAddingoptimizationcircuitrytoalowpassfilterallowsthefiltertoadjustitscutofffrequencydynamically,preservingthestep-responsetimeforrelativelylowcutofffrequencies.Acommonproblemwhendesigninglowpassfiltersforsignalconditioningistheireffectonthesystem'stime-domainresponse.Becausepushingthecutofffrequencylowerslowsthestepresponse,thesystemmayfailtorecognizesignificantchangesintime.TheFigure1circuitallowslowercutofffrequencies……

摘要：这一综合性的文章涵盖了模拟滤波器的所有方面。它首先解决的基本类型：第一代和第二阶滤波器，高通和低通滤波器，陷波和全通滤波器，高阶滤波器。本教程解释了不同的实现，如巴特沃斯滤波器，切比雪夫滤波器，贝塞尔滤波器，椭圆滤波器，状态变量滤波器和开关电容滤波器的特点。Maxim>AppNotes>FilterCircuits(Analog)Keywords:analogfilterdesign,secondorderfilters,highpass,highpass,lowpass,lowpass,filters,notch,Oct06,2008allpass,highorder,filters,Butterworth,Chebychev,Bessel,elliptic,statevariable,filterAPPLICATIONNOTE733AFilterPrimerAbstract:Thiscomprehensivearticlecoversallaspectsofanalogfilters.Itfirstaddressesthebasictypes:first-andsecond-orderfilters,highpassandlowpassfilters,notchandall-passfilters,andhigh-orderfilters.Thetutorialthenexplainsthecharacteristicsofthedifferentimplementations,suchasButterworthfilters,Chebychevfilters,Besselfilters,ellipticfilters,state-variablefilters,andswitched-capacitorfilters.IntroductionEaseofusemakesintegrated,swit……

摘要：这种电路派生纯正弦波从晶体控制时钟源所使用的环形计数器来删除最高振幅有害的谐波，和过滤结果与8阶低通、开关电容椭圆筛选器（MAX7400）。Maxim>AppNotes>FilterCircuits(Analog)SignalGenerationCircuitsKeywords:sinewavegenerators,low-distortionsignalgenerators,crystal-stabilizedoscillators,ringcounters,weighted-resistanceDec21,2010networks,lowpassellipticfilters,switched-capacitorfiltersAPPLICATIONNOTE4547Low-CostCircuitConvertsClocktoLow-DistortionSinewaveAbstract:Thiscircuitderivesapuresinewavefromacrystal-controlledclocksourcebyusingaringcountertoremovethehighest-amplitudeunwantedharmonics,andfilteringtheresultwithan8th-orderlowpass,switched-capacitorellipticfilter(MAX7400).AsimilarversionofthisarticleappearedintheOctober2007issueofPDmagazine.Asimple,low-costcircuit(Figure1)usestheexistingclockinad……

lowpassfiltersrealizableasallpasssums-designviaanewflatdelayfilter¤¨§!#"$&%'¤§()¤§102(3§54&¨§5687@9ACBED#!(FHGPIQR§S§UT5VR§WDXR§#Y`(!X"abcfehgpirq#sutwvxthygd1vxthRRwevX1gfxgtwtRxgWfvx!Rthgddgxc$twey(xfgtwRhihthjEkHtwghtwlmh$i!vx!g¤nodpAqfqwris!qthuvxuhtwxmyz${|}~|iv$}uh$ivrn¤qii$HV1(wWxwmH¤1(¨§(R§H¨(¤(¨(°x±Rjd#8¨WH(ddj(¤1(¨°§d(¤u1°°WR¨¨jR§jRdx(1§1§(xh1RVRw$@¤(x°Rd(¨hdi¨dx±h(¤dRw#¤h#whxj(°X¤¨h#wxxH¨(±Rh8W§R1hd¤(¤(¤x@dW(iH(°§1¤1¤dR§¤wRxR(@Wxxd1¤@Q1(xx(Qw1Rh1¨Wh°xh¨1¨w#°wR#§(R§H(!¤mw(#h¨1#h!(hh¨(!Q¤@WRX(x2°wRXH¤(j#(¤¤m$dj(°xR@¨°h¨QHw¤HW±RR°x8¨8°H×Q¨Q#¤h1àwá8!àwèéjêféêêféááìfêèíáXféjáXíhhà88f8éèèwè8¤8íhwè#òhéjíáRóí¨è¨iéá¨ihQ¤#êêhwh¤èiéèH÷ù¤êEQhêúhèò8áèífèhí(áH¤è@êEíhfàüháfiéRíéíméRéêéhê¤xíéêêféjáá#ìfêè(íáwó¤óéià÷ùCèhòéjímháxhê¨dfhwèáW¤ééíèò@jVéjhhêéèh§á¨iàwhà$ó¤hê¤èhHèíéàwèféjêéjhhêéè¤háHéêêféááHìiê¤èíáQéjhihéí8èihféjá……

摘要：一种常见的观点认为，数字电路的工作只是自然，但模拟电路是很难实现的。有真相，旧的信仰模拟接口是一个专家的课题，需要培训。，而且，它总是更好，以避免一个问题，而不是试图解决以后。这正是为什么我们应该采取的一些基本概念，有经验的模拟设计工程师作为反射执行的优势。本应用笔记提供了一些基本的提醒有关放大器和滤波器为您和概念设计过程中考虑。Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4993Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4993Maxim>Designsupport>Appnotes>AnalogSwitchesandMultiplexers>APP4993Keywords:digitalpotentiometer,lowpassfilter,filter,low-passfilter,lowpassfilte,antialiasing,sampleddatasystem,folded,Nyquist,dataconverters,spectrum,harmonics,FFT,ADC,convolution,DAC,opamps,RC,LC,ButterworthMar08,2011APPLICATIONNOTE4993ReducetheChancesofHumanError:Part2,SuperAmpsandFiltersforAnalogInterfaceBy:BillLaumeister,StrategicApplicationsEngineerAb……