标签: definitions

Basictermsanddefinitionsfornewantennadesigners

Abstract:Thisdocumentcollectsanddefinestechnicaltermscommonlyusedwithanalog-to-digitalconverters(ADCs)anddigital-to-analogconverters(DACs).Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSKeywords:glossary,ADCs,DACs,analogdigitalconverters,digitaltoanalogconverters,timedelay,jitter,Dec13,2000binary,DNL,INL,SNR,dynamicrange,sinad,sfdr,enob,gain,offset,distortion,lsb,monotonic,nyquist,quantization,THDAPPLICATIONNOTE641ADCandDACGlossaryAbstract:Thisdocumentcollectsanddefinestechnicaltermscommonlyusedwithanalog-to-digitalconverters(ADCs)anddigital-to-analogconverters(DACs).AcquisitionTimeAcquisitiontimeistheintervalbetweenthereleaseoftheholdstate(imposedbytheinputcircuitryofatrack-and-hold)andtheinstantatwhichthevoltageonthesamplingcapacitorsettlestowithin1LSBofanewinputvalue.Theequationforacquisitiontime……

NSK_CrystalUnits_TermsandDefinitionsCrystalUnits:TermsandDefinitionsThepiezoelectriceffectsisdefinedthatpressureappliedonquartzcrystalgeneratesvoltageandvoltageappliedacrossacrystalquartzproducesmechanicalvibration.Thefrequencyofthesevibrationisdeterminedbyseveralfactors:a)Thephysicaldimensionsofthepieceofquartzcrystalwafer.b)Theplaneorcutofthepieceinrelationtothecrystallineaxesofthequartz.c)Theambienttemperature.d)Theoperatingcircuit.1.EquivalentCircuitAlthoughthetheoreticalanalysisofthispiezoelectriceffectisarelativelycomplexelectro-mechanicalfunction,itcanbeshownasasimpleequivalentcircuit.||[pic]|Theequivalentcrystalcircuitisusefulinexplainingtheelectrical……