标签: parasitic

寄生电容潜藏在电路的每个角落，当调整电路中容性负载过重时，仔细选择运算放大器成为关键，以实现电压转换率、电流输出能力、功耗、反馈环路稳定性的最优化。可考虑用现有的小封装功率增强型放大器驱动重容性负载，也可采用电流反馈放大器如LT1397实现超宽带电路。TinyAmpliersDriveHeavyCapacitiveLoadsatSpeedDesignNote429KeeganLearyandBrianHamiltonIntroductionWithapackagethathasathermalresistanceof135°C/W,Parasiticcapacitancelurksbehindeverycornerofanthismuchcontinuouspowerwouldresultina148°Criseelectroniccircuit.FETgates,cabling,groundandpowerindietemperature.Iftheambienttemperatureis85°C,planesalladdtotheFaradbottomline.Whenthecapaci-thisbringsthedietoapackage-melting233°C!tiveloadgetsheavyinhighspeedcircuits,carefulopampToisolateCLOADfromtheamplier,adesigncoulduseselectionisparamountforoptimizingslewrate,currentaseriesresistor,RS.Thistechniqueultimatelylimits……

本文讲述了寄生电容在升压变压器设计中的影响。ApplicationNote39February1990ParasiticCapacitanceEffectsinStep-UpTransformerDesignBrianHuffmanOneofthemostcriticalcomponentsinastep-updesignFigure2showsthehighfrequencycurrentpathsofthelikeFigure1isthetransformer.Transformershavepara-parasiticcapacitors.Intheanalysisofoperationassumesiticcomponentsthatcancausethemtodeviatefromtheinputandoutputvolta……

Abstract:Thisarticleprovidesageneraloverviewofthe1-Wiretechnology,itscommunicationconceptand,asabenefitofthelowpincount,unusualpackageoptions.Themainsectiondiscusses1-Wiredevicesbytheirfeaturesetandexplainsthetypicalapplications.Thearticleendswithpracticalinformationonhowtoevaluate1-Wiredevices,explainsdevicecustomizationoptions,andreferencesresourcesthatassistcustomersinintegrating1-Wiretechnologyintheirsystems.Overviewof1-WireTechnologyandItsUseBy:BernhardLinke,PrincipalMemberTechnicalStaffJun19,2008Abstract:Thisarticleprovidesageneraloverviewofthe1-Wiretechnology,itscommunicationconceptand,asabenefitofthelowpincount,unusualpackageoptions.Themainsectiondiscusses1-Wiredevicesbytheirfeaturesetandexplainsthetypicalapplications.Thearticleendswithpracticalinformationonhowtoevaluate1-Wiredevices,explainsdevicecustomizationoptions,andreferencesresourcesthatassistcustomersinintegrating1-Wiretechnologyintheirsystems.WhatIs1-WireTechnology?Thebasisof1-Wiretechnologyisaserialprotocolusingasingledatalineplusgroundreferenceforcommunication.A1-Wiremasterinitiatesandcontrolsthecommunicationwit……

Abstract:ThispaperdescribessmallcashsystemsandtheuseofiButton®SHAdevices,specifically,theDS1963SandDS1961S,astheelectronicallyreadabletokensinwhichthecashisstored.Twoscenariosarepresented.InscenarioA,boththetokensandthecoprocessorareDS1963SiButtons.InscenarioB,theDS1963SfunctionsascoprocessorinasystemthatusestheDS1961Sastokensorcarriersofelectroniccash.WhitePaper1SHADevicesUsedinSmallCashSystemswww.maxim-ic.comINTRODUCTIONPayingforproductsinthestoreiseasyandconvenient,providedthatthestoreaccepts"plasticmoney"andtheconveniencefeedoesn'tcuttoodeeplyintotheprofitofthemerchant.Naturally,forsmallpurchasesplasticisnotaccepted,whichthrowsthecustomerbackintotheageofpapermoneyandcoins.Traditionalvendingmachinesoperateoncoinsonly.Aspricesforproductsandservicesincreasetheprobabilityofhavingtherightselectionofcoinsonhanddecreases.The……

Abstract:Self-startingisanecessarybutsometimesdifficulttask,whetheritismotivatinghumans,startingcoldautomobiles,orprovidingpower-on-reset(POR)forICs.PORsensuresystemsstartinknownandsafestates.Wewilldiscussseveralmisapplicationsofthistechnologyandhowdesignerscanavoidstartupproblems.Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>Automotive>APP4606Keywords:Self-start,opamp,buriedzener,bandgap,parasiticdevice,triac,electrostaticdischarge,ESD,PTAT,proportionaltoabsolutetemperature,Schottkydiode,poweronreset,POR,voltagereferenceDec14,2011TUTORIAL4606Self-StartingCanBeHardtoDo―UnderstandingPower-on-ResetRequirementsinRegulatorsandBandgapsBy:BillLaumeister,StrategicApplicatio……

摘要：自启动是必要的，但有时是困难的任务，无论是激励人类，开始感冒汽车，或提供上电复位（POR），集成电路（IC）。PORS确保系统中已知的和安全的状态开始。我们将讨论几个误用这项技术，设计者可以如何避免启动的问题。Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>Automotive>APP4606Keywords:Self-start,opamp,buriedzener,bandgap,parasiticdevice,triac,electrostaticdischarge,ESD,PTAT,proportionaltoabsolutetemperature,Schottkydiode,poweronreset,POR,voltagereferenceDec14,2011TUTORIAL4606Self-StartingCanBeHardtoDo―UnderstandingPower-on-ResetRequirementsinRegulatorsandBandgapsBy:BillLaumeister,StrategicApplicatio……

摘要：自启动是必要的，但有时是困难的任务，无论是激励人类，开始感冒汽车，或提供上电复位（POR），集成电路（IC）。PORS确保系统中已知的和安全的状态开始。我们将讨论几个误用这项技术，设计者可以如何避免启动的问题。Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>Automotive>APP4606Keywords:Self-start,opamp,buriedzener,bandgap,parasiticdevice,triac,electrostaticdischarge,ESD,PTAT,proportionaltoabsolutetemperature,Schottkydiode,poweronreset,POR,voltagereferenceDec14,2011TUTORIAL4606Self-StartingCanBeHardtoDo―UnderstandingPower-on-ResetRequirementsinRegulatorsandBandgapsBy:BillLaumeister,StrategicApplicatio……

摘要：自启动是必要的，但有时是困难的任务，无论是激励人类，开始感冒汽车，或提供上电复位（POR），集成电路（IC）。PORS确保系统中已知的和安全的状态开始。我们将讨论几个误用这项技术，设计者可以如何避免启动的问题。Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP4606Maxim>DesignSupport>TechnicalDocuments>Tutorials>Automotive>APP4606Keywords:Self-start,opamp,buriedzener,bandgap,parasiticdevice,triac,electrostaticdischarge,ESD,PTAT,proportionaltoabsolutetemperature,Schottkydiode,poweronreset,POR,voltagereferenceDec14,2011TUTORIAL4606Self-StartingCanBeHardtoDo―UnderstandingPower-on-ResetRequirementsinRegulatorsandBandgapsBy:BillLaumeister,StrategicApplicatio……

ParasiticinductanceofabypasscapacitorsignalintegrityByHowardJohnson,PhDParasiticinductanceofabypasscapacitorYoucanestimatetheparasiticseriesinductanceofabypasscapacitorinamultilayerboardwithsolidpowerandgroundplanes.UseanapproximationfortheinductanceL1duetothechiplayout(Figure1,greenshadedregion).Then,assumingthatyouhaveconnectedand-groundbouncethatyourchipexperiencesbutnotthenoisecoupledontothepowerandgroundplanes.Thechippower-supplycurrentsflowingthroughtheimpedancesofL2andL1generatemostofthehigh-frequencypower-andground-planenoiseemanatingfromthestructureinFigure1.Power-andground-planenoiseinthefrequencyregionthatthebypasscapacitorscontrolisthereforeproportionaltoL2L1.TocomputeL2(blueregion),assum……

ParasiticInductanceofMultilayerCeramicCapacitorsTECHNICALINFORMATIONPARASITICINDUCTANCEOFMULTILAYERCERAMICCAPACITORSbyJeffreyCain,Ph.D.AVXCorporationAbstract:Theparasiticinductanceofmultilayerceramiccapacitors(MLCCs)isbecomingmoreimportantinthedecouplingofhighspeeddigitalsystems.ThereexistsconflictingdataandstatementsontheparasiticinductanceoftheMLCC.Thisworkshowsthemeasurementtechniquesoftheinductanceparameters,focusingmainlyonthefixturingneededtoaccuratelymeasurethechips.Theeffectsofvariouscompensationandcalibrationmethodswillalsobedemonstrated.AcomprehensivetablewillbeshownthatincludestheparasiticinductanceforarangeofMLCCsfrom0402through1210.PARASITICINDUCTANCEOFMULTILAYERCERAMICCAPACITORSbyJeffreyCain,Ph.D.AVXCorporati……

摘要：DC-DC转换器的电场和磁场的极好来源。他们的EMI频谱开始在开关频率和经常超过100MHz的扩展。在印刷电路板（PCB）布局，以尽量减少电容式联轴器和磁性联轴器护理必须行使。电路的寄生电容和寄生电感，必须进行评估，因此，早在设计阶段可适当权衡。Maxim>AppNotes>AUTOMOTIVEGENERALENGINEERINGTOPICSPOWER-SUPPLYCIRCUITSPROTOTYPINGANDPCBOARDLAYOUTKeywords:printedcircuitboard,PCBlayout,parasiticinductance,parasiticcapacitance,EMI,DC-DC,dcdc,Mar01,2001converters,convertors,groundplane,groundloopAPPLICATIONNOTE735LayoutConsiderationsforNon-IsolatedDC-DCConvertersAbstract:DC-DCconvertersareanexcellentsourceofelectricfieldsandmagneticfields.TheirEMIspectrumbeginsattheswitchingfrequencyandoftenextendsover100MHz.Tominimizecapacitivecouplingsandmagneticcouplingscaremustbeexercisedinprintedcircuitboard(PCB)layout.Parasiticcapacitanceandparasiticinductanceofthecircuitmustbeevaluatedsothatthepropertrade-offcanbemadeearl……