标签: quantization

Mostofthesignalsdirectlyencounteredinscienceandengineeringarecontinuous:lightintensitythatchangeswithdistance;voltagethatvariesovertime;achemicalreactionratethatdependsontemperature,etc.Analog-to-DigitalConversion(ADC)andDigital-to-AnalogConversion(DAC)aretheprocessesthatallowdigitalcomputerstointeractwiththeseeverydaysignals.Digitalinformationisdifferentfromitscontinuouscounterpartintwoimportantrespects:itissampled,anditisquantized.Bothoftheserestricthowmuchinformationadigitalsignalcancontain.Thischapterisaboutinformationmanagement:understandingwhatinformationyouneedtoretain,andwhatinformationyoucanaffordtolose.Inturn,thisdictatestheselectionofthesamplingfrequency,numberofbits,andtypeofanalogfilteringneededforconvertingbetweentheanaloganddigitalrealms.CHAPTERADCandDAC3Mostofthesignalsdirectlyencounteredinscienceandengineeringarecontinuous:lightintensitythatchangeswithdistance;voltagethatvariesovertime;achemicalreactionratethatdependsontemperature,etc.Analog-to-DigitalConversion(ADC)andDigital-to-AnalogConversion(DAC)aretheprocessesthatallowdigitalcomputerstointeractwiththeseeverydaysignals.Digitalinformationisdifferentfromitscontinuouscounterpartintwoimportantrespects:itissampled,anditisquantized.Bothoftheserestricthowmuchinformationadigitalsignalcancontain.Thischapterisaboutinformationmanagement:understandingwhatinformationyouneedtoretain,andwhatinformationyoucanaffordtolose.In……

Abstract:Thefollowingarticledescribestherelationshipbetweensmall-signalandlarge-signalinputsandthenoise+distortionperformanceofadataconverteranditsimpactonthesensitivityandACperformanceofadigitalreceiversystem.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSBASESTATIONS/WIRELESSINFRASTRUCTURECOMMUNICATIONSCIRCUITSHIGH-SPEEDSIGNALPROCESSINGKeywords:noise,small-signal,large-signal,digitalreceiver,sensitivity,noisefigure,NF,noisefloor,thermal+Mar13,2003quantizationnoise,interference,automaticgaincontrol,AGC,signal-to-noiseratio,SNR,receiverblocker,signal-to-noiseanddistortion,SIAPPLICATIONNOTE1929UnderstandingADCNoiseforSmallandLargeSignalInputsforReceiverApplicationsAbstract:Thefollowingarticledescribestherelationshipbetweensmall-signalandlarge-signalinputsandthenoise+distortionperformanceofadataconverteranditsimpactonthesensitivityandACperformanceofadigitalreceiversystem.Introduction……

Abstract:Thefollowingapplicationnoteprovidesaninsightintothemathematicaldefinitionsofquantizationandthermalnoise,parameterswhichcansignificantlyaffectthesignal-to-noiseratio(SNR)andsignal-to-noiseplusdistortion(SINAD)specificationsofanalog-to-digitalconverters(ADCs)inRFreceiverapplications.ItconcludesbycomparingtheirimpactontheeffectivenoisefigureforaNyquistandoversamplingADC.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSBASESTATIONS/WIRELESSINFRASTRUCTUREHIGH-SPEEDSIGNALPROCESSINGKeywords:quantizationnoise,thermalnoise,noisefigure,ADC,analogtodigitalconverter,NyquistADC,Sep09,2002oversampling,signaltonoiseratio,SNR,signaltonoiseanddistortion,SINAD,noisepowerdensity,RF,receiver,highspeedADCs,analogdigitalconverAPPLICATIONNOTE1197HowQuantizationandThermalNoiseDetermineanADC'sEffectiveNoiseFigureAbstract:Thefollowingapplicationnoteprovidesaninsightintothemathematicaldefinitionsofquantizationandthermalnoise,parameterswhichcansignificantlyaffectthesignal-to-noiseratio(SNR)andsignal-to-noiseplusdistortion(SINAD)specificationsofanalog-to-digitalconverte……

Abstract:TheglossaryprovidesadetaileddescriptionofACperformancetermsrelatedtohigh-speeddataconverterssuchasADCsandDACs.Italsogivessomeinsightintothetestconditionstheseparametersarespecifiedfor.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSHIGH-SPEEDSIGNALPROCESSINGKeywords:aliasing,aperture,INL,crosstalk,coherentsampling,common-mode,DNL,dithering,ENOB,flash,Mar22,2001frequencybin,glitchenergy,latency,monotonicity,intermodulation,SNR,NPR,quantization,SFDR,SINAD,spectralleakage,THD,VSWRAPPLICATIONNOTE740GlossaryofFrequentlyUsedHigh-SpeedDataConverterTermsAbstract:TheglossaryprovidesadetaileddescriptionofACperformancetermsrelatedtohigh-speeddataconverterssuchasADCsandDACs.Italsogivessomeinsightintothetestconditionstheseparametersarespecifiedfor.Aliasing/Anti-AliasingInsamplingtheory,aninputsignal(fIN)mustbesampledwithatleasttwiceitsfrequency(Nyquistcrit……

摘要：本应用笔记提供了量化和热噪声，它可以显着影响信号信噪比（SNR）和信号与噪声加失真比（SINAD）规格的模拟参数的数学定义的洞察力-数字转换器（ADC）的RF接收器应用。最后通过比较为奈奎斯特采样ADC的有效噪声系数的影响。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSBASESTATIONS/WIRELESSINFRASTRUCTUREHIGH-SPEEDSIGNALPROCESSINGKeywords:quantizationnoise,thermalnoise,noisefigure,ADC,analogtodigitalconverter,NyquistADC,Sep09,2002oversampling,signaltonoiseratio,SNR,signaltonoiseanddistortion,SINAD,noisepowerdensity,RF,receiver,highspeedADCs,analogdigitalconverAPPLICATIONNOTE1197HowQuantizationandThermalNoiseDetermineanADC'sEffectiveNoiseFigureAbstract:Thefollowingapplicationnoteprovidesaninsightintothemathematicaldefinitionsofquantizationandthermalnoise,parameterswhichcansignificantlyaffectthesignal-to-noiseratio(SNR)andsignal-to-noiseplusdistortion(SINAD)specificationsofanalog-to-digitalconverte……

摘要：下面的文章介绍了小信号和大信号输入和数据转换器的噪声+失真性能和数字接收系统的灵敏度和AC性能的影响之间的关系。Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSBASESTATIONS/WIRELESSINFRASTRUCTURECOMMUNICATIONSCIRCUITSHIGH-SPEEDSIGNALPROCESSINGKeywords:noise,small-signal,large-signal,digitalreceiver,sensitivity,noisefigure,NF,noisefloor,thermal+Mar13,2003quantizationnoise,interference,automaticgaincontrol,AGC,signal-to-noiseratio,SNR,receiverblocker,signal-to-noiseanddistortion,SIAPPLICATIONNOTE1929UnderstandingADCNoiseforSmallandLargeSignalInputsforReceiverApplicationsAbstract:Thefollowingarticledescribestherelationshipbetweensmall-signalandlarge-signalinputsandthenoise+distortionperformanceofadataconverteranditsimpactonthesensitivityandACperformanceofadigitalreceiversystem.Introduction……

摘要：本应用笔记提供了一个视频数字化的概述，并产生频谱边带。文章分析到模拟视频转换成数字视频后面的过程，并解释如何视频重建需要适当的过滤技术。提供的例子，以避免或减少云纹效果和图片文物。Maxim>AppNotes>GeneralEngineeringTopicsKeywords:analog,video,reconstruction,moiré,picture,artifacts,digital,quantization,low,pass,filter,anti-alias,converter,ADC,DAC,Sep18,2008clock,sample,boxcar,Nyquist,Standard,Definition,SD,PAL,NTSC,High,HD,ATSC,MPEGAPPLICATIONNOTE4287ReconstructingAnalogVideowiththeMaximVideoFilterFamilyBy:BillLaumeisterAbstract:Thisapplicationnoteprovidesanoverviewofvideodigitization,andthespectrumandsidebandsproduced.Thearticleexaminestheprocessofconvertingdigitalvideobackintoanalogvideoandexplainshowvideoreconstructionrequiresproperfilteringtechniques.Examplesareprovidedtoavoidorminimizemoiréeffectsandpictureartifacts.IntroductionOnceanalogvideoiscapt……