标签: digitally

PowerIntegrations_innoswitch3-proDigitallyControllableOff-LineCVCCQRFlybackSwitcher.pdf

PowerIntegrations_innoswitch3-proDigitallyControllableOff-LineCVCCQRFlybackSwitcher.rar

为提供高精度反混叠性能，LTC1564作为重构滤波器在消除数模转换器(DAC)输出中不需要的高频频谱时作用明显。一种简单、紧凑、经济和高性能的数字信号处理和发生系统硬件仅需要一个LTC1564、一个ADC和一个DAC。advertisementLTC1564:ADigitallyTunedAntialiasing/ReconstructionFilterSimplifiesHighPerformanceDSPDesign……

Abstract:ThisarticlediscussesapplicationcircuitsforMaximforce/sensedigital-to-analogconverters(DACs).Applicationsinclude:selectablefixed-gainDAC,programmablegainDAC,photodiodebiascontrol,amperometricsensorcontrol,digitallyprogrammablecurrentsource,Kelvinloadsensing,temperaturesensing,andhighcurrentDACoutput.AbriefdescriptionofthevariousDACoutputconfigurationsisalsogiven.Maxim>DesignSupport>AppNotes>A/DandD/AConversion/SamplingCircuits>APP807Maxim>DesignSupport>AppNotes>DigitalPotentiometers>APP807Maxim>DesignSupport>AppNotes>InterfaceCircuits>APP807Keywords:DACapplicationcircuits,Force/senseDAC,DAC,digitaltoanalogconvertor,selectableDACgain,programmableDACgain,digitalpotentiometers,photodiodecontrol,amperometricsensorbiascontrol,digitallyprogrammablecurrentsource,tempsenseOct02,2001APPLICATIONNOTE807Force/SenseDACApplicationsAbstract:ThisarticlediscussesapplicationcircuitsforMaximforce/sensedigital-to-analogconverters(DACs).Applicationsi……

摘要：本文讨论了应用电路的格言力/感的数模转换器（Dac）。应用程序包括：DAC可选择固定增益DAC、可编程增益DAC、光电二极管偏置控制、安培传感器控制、数字可编程电流源、开尔文负载传感、温度传感，和高电流输出。此外提供了各种DAC输出配置的简短说明。Maxim>DesignSupport>AppNotes>A/DandD/AConversion/SamplingCircuits>APP807Maxim>DesignSupport>AppNotes>DigitalPotentiometers>APP807Maxim>DesignSupport>AppNotes>InterfaceCircuits>APP807Keywords:DACapplicationcircuits,Force/senseDAC,DAC,digitaltoanalogconvertor,selectableDACgain,programmableDACgain,digitalpotentiometers,photodiodecontrol,amperometricsensorbiascontrol,digitallyprogrammablecurrentsource,tempsenseOct02,2001APPLICATIONNOTE807Force/SenseDACApplicationsAbstract:ThisarticlediscussesapplicationcircuitsforMaximforce/sensedigital-to-analogconverters(DACs).Applicationsi……

数字可调电压的引用是在许多应用程序非常有用。例如，可以使用需要的绝对精度时细调参考电压或调整到最大限度模拟向数字转换的动态范围的模拟输入信号的全面的电压范围相匹配的参考电压。您可以轻松创建一个可调节电压参考结合数字电位器(罐)。使用数字锅的数字变量方面控制灵活和有用的电路中参考结果调整电压。此处提供了三种基本电路拓扑。第一次达到粗的调整宽电压范围，第二种罚款一个窄的电压范围，和第三个调整细宽电压范围内的调整。这些简单的电路可以直接使用，或可以构成更复杂的控制系统的基础。Maxim>AppNotes>DIGITALPOTENTIOMETERSKeywords:DigitallyAdjustableVoltageReferencesJul01,2001APPLICATIONNOTE629DigitallyAdjustableVoltageReferencesAdigitallyadjustablevoltagereferenceisusefulinmanyapplications.Forinstance,itcanbeusedtofinelytunethereferencevoltagewhenabsoluteaccuracyisrequiredortoadjustthereferencevoltagetomatchthefull-scalevoltagerangeofananalog-inputsignaltomaximizethedynamicrangeofananalog-to-digitalconversion.Youcaneasilycreateonebycombininganadjustablevoltagereferencewithadigitalpotentiometer(pot).Usingthedigitallyvariableaspectofthedigitalpottocontroltheadjustmentvoltageonthereferenceresultsinaflexibleand……

图1电路的生产使用精确的可变频率正弦波波作为一个通用的参考信号。它包括一个8阶椭圆形，开关电容低通滤波器器（IC3）微处理器IC2产生的100kHz方波时钟。（任何其他方便的方波源也是可以接受的。）微控制器的时钟由10MHz的振荡器模块。一个电压监控器（IC1），确保在电源故障时的正确操作。IC3的设置在1/100的时钟频率，滤波器的截止频率。Maxim>AppNotes>AutomotiveFilterCircuits(Analog)SignalGenerationCircuitsKeywords:digitallycontrolledsine-wavegenerator,sinewave,circuits,IC3Jun27,2003APPLICATIONNOTE2081DigitallyControlledSine-WaveGeneratorAsimilarversionofthisarticleappearedintheMay15,2003issueofEDNmagazine.ThecircuitofFigure1producesanaccuratevariable-frequencysinewaveforuseasageneral-purposereferencesignal.Itincludesan8th-orderelliptic,switched-capacitorlowpassfilter(IC3)thatisclockedwitha100kHzsquarewavegeneratedbymicrocontrollerIC2.(Anyotherconvenientsquarewavesourceisalsoacceptable.)Themicrocontrollerisclockedbya10MHzoscillatormodule.Avo……

CharacterizingDigitallyModulatedSignalswithCCDFCurvesCharacterizingDigitallyModulatedSignalswithCCDFCurvesApplicationNoteTableofContents1.IntroductionWhenareCCDFcurvesused?2.WhatareCCDFcurves?StatisticaloriginofCCDFcurvesWhynotcrestfactor?3.CCDFincommunicationsModulationformatsModulationfilteringMultiple-frequencysignalsPhasesaffectmulti-tonesignalsSpread-spectrumsystemsNumberofactivecodesinspreadspectrumOrthogonalcodingeffectsMulti-carriersignals4.CCDFincomponentdesignCompressionofsignalbynonlinearcomponentsCorrelatingtheamplifiercurveswiththeCCDFplotCompressionaffectsotherkeymeasurementsApplications5.Summary6.References7.Symbolsandacronyms2IntroductionDigitalmodulationhascreatedarevolutioninRFandmicrowavecommunications.Cellular……

Digitallyenhancedhighresolutionpipelinedanalog-to-digitalconversion……