标签: resolution

TMS320x2833x,2823xHighResolutionPulseWidthModulator(HRPWM)RG(Rev.B).pdf

videobasics……

bandwidthversusvedioresolution……

understandinganalogvideosignals……

Thischapterpresentsfourspecificaspectsofimageprocessing.First,waystocharacterizethespatialresolutionarediscussed.Thisdescribestheminimumsizeanobjectmustbetobeseeninanimage.Second,thesignal-to-noiseratioisexamined,explaininghowfaintanobjectcanbeandstillbedetected.Third,morphologicaltechniquesareintroduced.Thesearenonlinearoperationsusedtomanipulatebinaryimages(whereeachpixeliseitherblackorwhite).Fourth,theremarkabletechniqueofcomputedtomographyisdescribed.Thishasrevolutionizedmedicaldiagnosisbyprovidingdetailedimagesoftheinteriorofthehumanbody.CHAPTERSpecialImagingTechniques25Thischapterpresentsfourspecificaspectsofimageprocessing.First,waystocharacterizethespatialresolutionarediscussed.Thisdescribestheminimumsizeanobjectmustbetobeseeninanimage.Second,thesignal-to-noiseratioisexamined,explaininghowfaintanobjectcanbeandstillbedetected.Third,morphologicaltechniquesareintroduced.Thesearenonlinearoperationsusedtomanipulatebinaryimages(whereeachpixeliseitherblackorwhite).Fourth,theremarkabletechniqueofcomputedtomographyisdescribed.Thishasrevolutionizedmedicaldiagnosisbyprovidingdetailedimagesoftheinteriorofthehumanbody.SpatialResolutionSupposewewanttocomparetwoimagings……

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:TheEffectiveNumberofBitsCalculator(ENOB)aidsinthedesignandanalysisofdataconverterapplicationcircuits.ItcalculatesENOB,SINAD,resolution,signalbandwidth,oversamplerates,DNL,clockjitter,analognoise,andTHD.ThecalculatorcanbeusedwithaHP®50gcalculatororafreePCemulator.Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP5061Maxim>DesignSupport>TechnicalDocuments>Tutorials>DigitalPotentiometers>APP5061Maxim>DesignSupport>TechnicalDocuments>Tutorials>MeasurementCircuits>APP5061Keywords:EffectiveNumberBits,Calculator,ENOB,DataConverter,SINAD,Resolution,Signal,OversampleRates,DNL,Clock,Jitter,AnalogNoise,THD,ADC,DAC,AnalogDesign,DigitalAccuracy,HP50g,INL,TotalHarmonicDistortionAug09,2011TUTORIAL5061EffectiveNumberofBitsCalculatorTutorialBy:BillLaumeister,StrategicApplicationsEngineerAbstract:TheEffectiv……

Abstract:TheAccuracyCalculator(ACCU)aidsinthedesignandanalysisofdata-converterapplicationcircuits.ItcalculatestheDCaccuracyofanidealdataconverter.TheprogramisforusewithaHP®50gcalculatororfreePCemulator.Maxim>DesignSupport>AppNotes>A/DandD/AConversion/SamplingCircuits>APP5060Maxim>DesignSupport>AppNotes>DigitalPotentiometers>APP5060Keywords:ADC,DAC,Accuracy,Calculator,analogdigital,designanalysis,dataconverter,applicationcircuits,DCaccuracy,HP50g,Resolution,bits,PPM,INL,LSB,AnalogCircuitDesign,HP50gPrograms,ACCUAug09,2011APPLICATIONNOTE5060ADC/DACAccuracyCalculatorTutorialBy:BillLaumeister,StrategicApplicationsEngineerAbstract:TheAccuracyCalculator(ACCU)aidsinthedesignandanalysisofdata-converterapplicationcircuits.ItcalculatestheDCaccuracyofanidealdataconverter.Theprogram……

摘要：数位计算器（ENOB），艾滋病在数据转换器应用电路的设计和分析的有效。它计算的ENOB，SINAD，分辨率，信号带宽，过采样率，DNL的，时钟抖动，模拟噪声和THD。该计算器可用于惠普®50克计算器或免费的PC模拟器。Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP5061Maxim>DesignSupport>TechnicalDocuments>Tutorials>DigitalPotentiometers>APP5061Maxim>DesignSupport>TechnicalDocuments>Tutorials>MeasurementCircuits>APP5061Keywords:EffectiveNumberBits,Calculator,ENOB,DataConverter,SINAD,Resolution,Signal,OversampleRates,DNL,Clock,Jitter,AnalogNoise,THD,ADC,DAC,AnalogDesign,DigitalAccuracy,HP50g,INL,TotalHarmonicDistortionAug09,2011TUTORIAL5061EffectiveNumberofBitsCalculatorTutorialBy:BillLaumeister,StrategicApplicationsEngineerAbstract:TheEffectiv……

摘要：精度计算器（累加器）在数据转换器应用电路的设计和分析。它计算出一个理想的数据转换器的直流精度。该方案是使用与HP®50G计算器或免费的PC模拟器。Maxim>DesignSupport>AppNotes>A/DandD/AConversion/SamplingCircuits>APP5060Maxim>DesignSupport>AppNotes>DigitalPotentiometers>APP5060Keywords:ADC,DAC,Accuracy,Calculator,analogdigital,designanalysis,dataconverter,applicationcircuits,DCaccuracy,HP50g,Resolution,bits,PPM,INL,LSB,AnalogCircuitDesign,HP50gPrograms,ACCUAug09,2011APPLICATIONNOTE5060ADC/DACAccuracyCalculatorTutorialBy:BillLaumeister,StrategicApplicationsEngineerAbstract:TheAccuracyCalculator(ACCU)aidsinthedesignandanalysisofdata-converterapplicationcircuits.ItcalculatestheDCaccuracyofanidealdataconverter.Theprogram……

LCDresolution15AnnexC……

Digitallyenhancedhighresolutionpipelinedanalog-to-digitalconversion……