标签: divider

摘要：本设计指南中，电路采用10位ADC、电阻分压器以及外部基准，能够将ADC的实际精度提高至13位。本文展示了通过电压缩放，将10位ADC扩展至13位设计实例。文中分别描述了MAX15910位ADC、MAX5420电阻分压器以及MAX6141电压基准的特性。通过调整基准电压提高ADC精度FrancoContadiniMar04,2012摘要：本设计指南中，电路采用10位ADC、电阻分压器以及外部基准，能够将ADC的实际精度提高至13位。本文展示了通过电压缩放，将10位ADC扩展至13位设计实例。文中分别描述了MAX15910位ADC、MAX5420电阻分压器以及MAX6141电压基准的特性。为了提高灵活性，数据采集板应适合不同的输入电压范围，利用同一采集电路处理低幅度信号时往往需要增加几位分辨率，从而提高了系统成本。利用本应用笔记给出的简单电路，可以采用低成本10位ADC将实际精度提高至13位。图1ADC的1个LSB(最低有效位)为FSR/2n，其中n表示位数。FSR(满量程)取决于电压基准幅度。采用外部基准的MAX159是低功耗、108ksps串行ADC，封装于MAX-8，其输入范围为0至VDD+50mV。较宽的输入范围允许利用基准缩放技术来适应不同的输入范围。低成本、3端电压基准的输出通过数字可编程电阻分压器(MAX5420)进行缩放调节，分压器可提供精确的分压比(1、2、4、8)。分压比精度为0.025%至0.5%，取决于所选择的器件等级(A、B、C)。分压比由数字输入D1和D0决定，具体如下：表1.DIGITALINPUTSD1D0DIVIDERRATIO0010121……

摘要：本设计指南中，电路采用10位ADC、电阻分压器以及外部基准，能够将ADC的实际精度提高至13位。本文展示了通过电压缩放，将10位ADC扩展至13位设计实例。文中分别描述了MAX15910位ADC、MAX5420电阻分压器以及MAX6141电压基准的特性。通过调整基准电压提高ADC精度FrancoContadiniMar04,2012摘要：本设计指南中，电路采用10位ADC、电阻分压器以及外部基准，能够将ADC的实际精度提高至13位。本文展示了通过电压缩放，将10位ADC扩展至13位设计实例。文中分别描述了MAX15910位ADC、MAX5420电阻分压器以及MAX6141电压基准的特性。为了提高灵活性，数据采集板应适合不同的输入电压范围，利用同一采集电路处理低幅度信号时往往需要增加几位分辨率，从而提高了系统成本。利用本应用笔记给出的简单电路，可以采用低成本10位ADC将实际精度提高至13位。图1ADC的1个LSB(最低有效位)为FSR/2n，其中n表示位数。FSR(满量程)取决于电压基准幅度。采用外部基准的MAX159是低功耗、108ksps串行ADC，封装于MAX-8，其输入范围为0至VDD+50mV。较宽的输入范围允许利用基准缩放技术来适应不同的输入范围。低成本、3端电压基准的输出通过数字可编程电阻分压器(MAX5420)进行缩放调节，分压器可提供精确的分压比(1、2、4、8)。分压比精度为0.025%至0.5%，取决于所选择的器件等级(A、B、C)。分压比由数字输入D1和D0决定，具体如下：表1.DIGITALINPUTSD1D0DIVIDERRATIO0010121……

Abstract:Analog-to-digitalconverter(ADC)datasheetsandapplicationtypicallyrecommenddrivingtheirinputswithalowsourceimpedance.ThisapplicationnoteexplainsthepossibleeffectssuchasincreasedgainerroranddistortionwhenusinghighimpedancetodriveanADCwithoutabuffer.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSKeywords:ADC,analogtodigitalconverter,voltagedivider,distortion,gainerror,highimpedance,lowMar25,2003impedance,samplingcapacitor,timeconstant,a/dconvertersAPPLICATIONNOTE1948AnalysisofADCSystemDistortionCausedbySourceResistanceAbstract:Analog-to-digitalconverter(ADC)datasheetsandapplicationtypicallyrecommenddrivingtheirinputswithalowsourceimpedance.ThisapplicationnoteexplainsthepossibleeffectssuchasincreasedgainerroranddistortionwhenusinghighimpedancetodriveanADCwithoutabuffer.Analog-to-digitalconverter(ADC)usershavebeeninstructedbyendlessdatasheetsandapplicationnotestodrivetheirADCswithalowsourceimpedance.However,thesei……

Abstract:ThisapplicationnotedescribesthedesignofaPC-based,14-bitdataacquisitionsystem.Ittakesasystemapproach,includesallthenecessarybuildingblocks:analog,digital,hardware,andsoftware.Itdiscusseseachstep,testingsystemsseparatelybeforeintegratingthem,anddetailingpitfallslearnedalongtheway.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSAMPLIFIERANDCOMPARATORCIRCUITSKeywords:DAQ,dataacquisition,windows-based,pc-based,ADC,analogtodigitalconverter,ADCs,Jun28,2002converters,RS232,AVR,resistordivider,resistivedivider,signalconditioning,rs-232APPLICATIONNOTE1138PracticalDataAcquisitionusingaWindows-basedPowerMeterAbstract:ThisapplicationnotedescribesthedesignofaPC-based,14-bitdataacquisitionsystem.Ittakesasystemapproach,includesallthenecessarybuildingblocks:analog,digital,hardware,andsoftware.Itdiscusseseachstep,testingsystemsseparatelybeforeintegratingthem,anddetailingpitfallslearnedalongtheway.Manyarticleshavebeenwrittenaboutthebuildingblocksinatypicaldataacq……

摘要：本应用笔记描述了一个基于PC的14位数据采集系统的设计。它需要一个系统的方法，包括所有必要的积木：模拟，数字，硬件和软件。分别讨论每一个步骤，测试系统整合，并详细介绍沿途了解到的陷阱之前。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSAMPLIFIERANDCOMPARATORCIRCUITSKeywords:DAQ,dataacquisition,windows-based,pc-based,ADC,analogtodigitalconverter,ADCs,Jun28,2002converters,RS232,AVR,resistordivider,resistivedivider,signalconditioning,rs-232APPLICATIONNOTE1138PracticalDataAcquisitionusingaWindows-basedPowerMeterAbstract:ThisapplicationnotedescribesthedesignofaPC-based,14-bitdataacquisitionsystem.Ittakesasystemapproach,includesallthenecessarybuildingblocks:analog,digital,hardware,andsoftware.Itdiscusseseachstep,testingsystemsseparatelybeforeintegratingthem,anddetailingpitfallslearnedalongtheway.Manyarticleshavebeenwrittenaboutthebuildingblocksinatypicaldataacq……

摘要：电荷泵往往供电低功耗和低成本的应用程序需要的最佳选择。本应用笔记讨论了集成的电荷泵，并解释如何计算功耗电荷泵。Maxim>DesignSupport>AppNotes>Automotive>APP725Maxim>DesignSupport>AppNotes>Power-SupplyCircuits>APP725Keywords:powersupply,voltageconverter,dc-dcconverters,chargepumps,switchedcapacitorregulator,regulatedchargepump,unregulatedchargepump,voltagedivider,voltagedoubler,regulatedinverter,buck-boost,regulator,chargepumppowerdissipationJul22,2009APPLICATIONNOTE725DC-DCConversionWithoutInductorsAbstract:Chargepumpsareoftenthebestchoiceforpoweringanapplicationthatrequiresbothlowpowerandlowcost.Thisapplicationnotediscussesintegratedchargepumpsandexplainshowtocalculatepowerdissip……

摘要：DS4402或DS4404可调电流DAC用于调整的DC-DC转换器的输出电压的幅度。本文介绍如何正确地选择在一个DC-DC转换器的反馈分压器网络的电阻值时，DS4402或DS4404在设计就业。Maxim>AppNotes>COMMUNICATIONSCIRCUITSOSCILLATORS/DELAYLINES/TIMERS/COUNTERSPOWER-SUPPLYCIRCUITSKeywords:DC/DCConverter,resistivefeedbackdividernetwork,currentDAC,full-scalecurrent,sourceMay30,2007current,sinkcurrent,outputvoltagemarginAPPLICATIONNOTE4055UsingtheDS4402/DS4404toMargintheOutputVoltageofaDC-DCConverterAbstract:ADS4402orDS4404adjustable-currentDACisusedtoadjustthemarginofaDC-DCconverter'soutputvoltage.ThisarticledescribeshowtoproperlyselecttheresistorvaluesinaDC-DCconverter'sfeedbackdividernetworkwhenaDS4402orDS4404isemployedinthedesign.TheAdjustablePowerSupplyTheDS4402/DS4404DACscontaintwo/fourICadjustablecurrentsourcescapableofsinkingandsourcingcurr……

摘要：一个DS4412可调电流DAC用于调整的DC-DC转换器的输出电压幅度。本文介绍如何正确地选择一个DC-DC转换器的反馈分压器网络的电阻值时，DS4412在设计就业。Maxim>AppNotes>COMMUNICATIONSCIRCUITSMICROPROCESSORSUPERVISORCIRCUITSMISCELLANEOUSCIRCUITSVOLTAGEREFERENCESKeywords:DC-DCconverter,resistivefeedbackdividernetwork,currentDAC,full-scalecurrent,sourceFeb20,2008current,sinkcurrent,outputvoltagemarginAPPLICATIONNOTE4197UsingtheDS4412toMargintheOutputVoltageofaDC-DCConverterAbstract:ADS4412adjustable-currentDACisusedtoadjustthemarginofaDC-DCconverter'soutputvoltage.ThisarticledescribeshowtoproperlyselecttheresistorvaluesofaDC-DCconverter'sfeedbackdividernetworkwhenaDS4412isemployedinthedesign.TheAdjustablePowerSupplyTheDS4412containstwoICadjustablecurrentsourcescapableofsinkingandsourcingcurrent.Atypicalapplicationforthese……

摘要：一个DS4424可调电流DAC用于调整的DC-DC转换器的输出电压幅度。本文介绍如何正确地选择一个DC-DC转换器的反馈分压器网络的电阻值时，DS4424在设计就业。Maxim>AppNotes>DIGITALPOTENTIOMETERSKeywords:DC-DCconverter,resistivefeedbackdividernetwork,currentDAC,full-scalecurrent,sourceSep22,2008current,sinkcurrent,outputvoltagemargin,powersupply,testmargining,DC-DCconverterfeedbackmarginingAPPLICATIONNOTE4280UsingtheDS4424toMargintheOutputVoltageofaDC-DCConverterAbstract:ADS4424adjustable-currentDACisusedtoadjustthemarginofaDC-DCconverter'soutputvoltage.ThisarticledescribeshowtoproperlyselecttheresistorvaluesofaDC-DCconverter'sfeedbackdividernetworkwhentheDS4424isemployedinthedesign.IntroductionTheDS4424adjustable-currentDACissimilartotheDS4404adjustable-currentDACwithtwomajordifferences.First,theDS4424has127settingseachfor……

摘要：线性数字电位器，可用于任意电压曲线和波形。为数字电位器的替代名称是一个“字符串”数字-模拟转换器（DAC）。测井盆是线性锅产生对数响应的应用，如音频的艺术。Maxim>AppNotes>A/DandD/AConversion/SamplingCircuitsAudioCircuitsDigitalPotentiometersGeneralEngineeringTopicsKeywords:digitalpots,potentiometer,voltagedivider,sensorconditioning,ratiometric,precisionresistor,Dec11,2008resistance,ratio,singlepowersupply,temperaturecoefficient,lowdrift,linear,log,logarithmic,arbitrarywaveformcurve,stringDAC,audioAPPLICATIONNOTE4346Pots,Pans,Logs,andLinearDigitalPotsCreateArbitraryVoltageCurvesBy:BillLaumeisterAbstract:Lineardigitalpotentiometerscanbeusedtomakearbitraryvoltagecurvesandwaveforms.Analternativenameforadigitalpotisa"string"digital-to-analogconverter(DAC).Loggingpotsistheartofmakingalinearpotproducealogarithmicresponsefora……

摘要：DS4424可调节电流DAC用于调整直流-直流转换器的输出电压的边距。本文介绍如何正确选择的直流-直流转换器的反馈分隔线网络电阻值时DS4424受雇于设计。Maxim>AppNotes>DIGITALPOTENTIOMETERSKeywords:DC-DCconverter,resistivefeedbackdividernetwork,currentDAC,full-scalecurrent,sourceSep22,2008current,sinkcurrent,outputvoltagemargin,powersupply,testmargining,DC-DCconverterfeedbackmarginingAPPLICATIONNOTE4280UsingtheDS4424toMargintheOutputVoltageofaDC-DCConverterAbstract:ADS4424adjustable-currentDACisusedtoadjustthemarginofaDC-DCconverter'soutputvoltage.ThisarticledescribeshowtoproperlyselecttheresistorvaluesofaDC-DCconverter'sfeedbackdividernetworkwhentheDS4424isemployedinthedesign.IntroductionTheDS4424adjustable-currentDACissimilartotheDS4404adjustable-currentDACwithtwomajordifferences.First,theDS4424has127settingseachfor……

摘要：铁路分裂是一个人造的虚拟接地作为参考电压。它是用来设置信号匹配运算放大器的“甜蜜点”。运算放大器具有最线性，无失真的品质，甜蜜点。通常情况下，甜蜜点附近发生单电源轨和地面之间的中心。在信号的情况下，虚拟的地面控制复或开关信号时，通道的DC错误。Maxim>AppNotes>AudioCircuitsGeneralEngineeringTopicsPower-SupplyCircuitsKeywords:OpAmps,VirtualGround,RailSplitter,multiplexer,MUX,voltagedivider,sensorconditioning,Dec19,2008precisionresistor,digitalpots,potentiometer,resistance,singlepowersupply,center,matching-bias,reference,channeloffset,settlingtime,errorAPPLICATIONNOTE4344RailSplitter,fromAbrahamLincolntoVirtualGroundBy:BillLaumeisterAbstract:Railsplittingiscreatinganartificialvirtualgroundasareferencevoltage.Itisusedtosetthesignaltomatchtheopamp's"sweetspot."Anopamphasthemostlinear-anddistortion-freequalitiesatthatsweetspot.Typically,thesweetspotoccursnearthecenterbetweenthesinglepowerrailandground.Inthecase……

powerdividerLietal./JZhejiangUnivSCIENCEA20067(1):1-41JournalofZhejiangUniversitySCIENCEAISSN1009-3095http://www.zju.edu.cn/jzusE-mail:jzus@zju.edu.cnScienceLetters:Apowerdividerbasedonanewkindofcompositeright/left-handedtransmissionline(CRLHTL)unit*LIJiu-sheng(李九生)1,ZOUYong-zhuo(邹勇卓)1,HESailing(何赛灵)1,2(1CentreforOpticalandElectromagneticResearch,StateKeyLaboratoryofModernOpticalInstrumentation,ZhejiangUniversity,Hangzhou310027,China)(DivisionofElectromagneticTheory,AlfvenLaboratory,RoyalInstituteofTechnology,S-10044,Stockholm,Sweden)2E-mail:cherishli@coer.zju.edu.cnReceivedSept.13,2005;revisionacceptedOct.26,2005Abstract:Anewpowerdivider,composedofanovelcompositeright/left-handed(CRLH)tr……