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25years.pdf

25years

国内外语言学习
2012-07-26 0人阅读 0 0 0 暂无简介 举报

简介:本文档为《25yearspdf》,可适用于IT/计算机领域

President'sMessageTwentyfiveyearsago,asafledglingcompanyinbusinesslessthantwoyearsAnalogDevicesstartedpublishingAnalogDialogueWenotedthatmanycompanypublica­tionsfellfarshortofwhatengineers,scientists,andtechniciansneededaserious,reliable,wellwritten,applicationsorientedmediumappearingwithadegreeofregularityandcontinuitythatwouldinformreadersofthenewestandbestavailabletechnologiesandhowtheymightbeappliedinpracticalwaystoguideourreadersthroughthetreacherousswampsofelectronicdesignWequicklybecameawareofthemagnitudeofinvestmentoftalentandmoneyrequiredtosustainregularpublicationofahighqualitycorpo­ratetechnicaljournallarge,evenforamoresubstantialandwellanchoredcom­panyNeverthelesswefeltthenthattheavailabilityofsuchapublicationtoourexistingandprospectivecustomersinthegrowinginternationalmarketforprecisionelectronicswasacriticalnecessityfortheindustryandthatmeetingitwouldhandsomelyrewardusformakingtheinvestmentAndsoithasturnedoutAsoneofthefewcorporatetechnicaljournalswithalongrecordofcontinuouspublication,AnalogDialoguehasvirtuallybecomeaninstitu­tionThemostcommoncommentfoundonthereplycardsthatcomebacktouswithcommentsis"Thankyou!Andkeepupthegoodwork"Thatispreciselyourintentionandnotonlytokeepitupbut,withyourhelp,toseektoimprovetheDialogueWhilemanyindividualsthroughoutADIhavecontributedtothesuccessofAnalogDialogue,theconsistenthighqual­ityandpractical,usefulcontentofthispublicationareduealmostsolelytothededicationandcommitmentofitseditorandpublisher,DanSheingoldFornearlyyears,hisfarreachingknowledgeofsignalprocessingtechnologyandhisunusualtalentforlucidandinterestingexpressionofcomplextechnicalissueshavebeenavaluableresource,notonlyforAnalogDevicesbutequallyfortheindustryweserveItisappropriatethatwededicatethisthanniversaryeditiontoDantocommemoratealifetimeoffruitful,productivework~RaystataChairmanoftheBoardandPresidentAnalogDevices,IncTheBffitof•Aforumfortheexchangeofcircuits,systems,andsoftwareforrealworldsignalprocessingto(thAnniversaryBonusEditio)AALOGDEVICESISBN···©AnalogDevices,IncIiiTABLEOFCONTENTSIssueItemPageTableofcontents(chronological)illPrefaceandintroductionV"Ajournalfortheexchangeofoperationalamplifiertechnology"OperationalintegratorsRayStataUser'sguidetoapplyingandmeasuringopampspecificationsRayStata'Ajournalfortheexchangeofanalogtechnology"NoiseandoperationalamplifiercircuitsLSmith,DSheingoldSettlingtimeofoperationalamplifiersRDemrow"AforumfortheexchangeofcircuittechnologyAnalogandDigital,MonolithicandDiscrete"NewapproachestodataacquisitionsystemdesignTOAndersonOpampsaselectrometersortheworldoffAGoodcircuitpracticegetsbestresultsfromisolationamplifiersUnderstandingsampleholdmodulesASanchezVersatilenewmodule:Y(ZfX)matlowcost()FPouliot,LCountsRTIvsRTOHowtocomputethedriftofinstrumentationamplifiersRootsumofsquares,trigonometricapproximationsDSheingoldAbitmonolithicCMOSdJaconverter(AD)JCecil,GWhitmoreHighspeedopampsrevisitedWhat"highspeed"meanstotheuserJFishmanKeystolongerlifeforCMOSprotectionagainstabuseGWhitmoreMonolithicICvoltageregulator(AD)PBrokawVersatilemonolithicVlforIffconverter(AD)DKress,BGilbertAccuratelasertrimmedeasytousemultiplier(AD)BGilbertMonolithicICRMStoDCconverter(AD)LCounts,BGilbert,DKressAnalogsignalhandlingforhighspeedandaccuracyPBrokawfAKICtemperaturetocurrenttransducer(AD)MTimko,GSuttlerApplicationideasformultiplyingDACsJNewellCircuitideasforICconvertersWJung,JRiskin,LCountsCompletebitchipICAIDconverterMTimko,PHolloway'Aforumfortheexchangeofcircuitsystemformeasurementcontrol"MACSYMCompleteMeasurementAndControlSYsteMIWold,FPouliotVeryhighspeeddataacquisition(highresolutionvideoconverters)EGravesThenewgenerationofportisolationamplifiers()FGoodenough'Aforumfortheexchangeofcircuitssystemsformeasurement,control,test"ComputerizedtestsystemforlineardevicesFPouliot,ARyanBehindtheswitchsymbolusingCMOSswitcheseffectivelyGWhitmoreTestingaidconvertersautomaticallywiththeLTSOTWilhelmUnderstandinginterferencetypenoisewithoutblackmagicARichShieldingandguardinghowtoexcludeinterferencetypenoiseARichLevelindependentautomaticgaincontrolwiththeLOGDAC"JWynneBestofAnalogDialogueiiiIssueItemPage,Aforumfortheexchangeofcircuits,ystemsandsoftwareforrealworldsignalprocessing'DigitalFIRfLlterswithouttearsBWindsor,PToldalagiAvoidingpassivecomponentpitfallsDGrant,SWurcerGroundrulesforhighspeedcircuitsDBrockman,AWilliamsDCamplifiernoiserevisitedARyan,TScrantonFast,simpleapproximationoffunctionsusingNewtonRaphsonMJohnsonAcompletemonolithicY(Zrxrandlogfunctionchip(AD)LCounts,CKitchin,SShermanIEEEchips:fastfloatingpointmultiplier,ALU(ADSPO,)BWindsor,DFairFast,flexibleCMOSsinglechip~PforDSP(ADSP)MNell,BFineMonolithicdigitallyprogrammabledelaygenerator(AD)JBarrowComplementarybipolaropamps:superbdcprecisionfastsettlingSensortoserialcommunicationswithascrewdriver(BSeries)NBernsteinAsktheApplicationsEngineer:TrimmingJBryantAsktheApplicationsEngineer:VFConvertersJBryantMonolithicdctoMHzlogampchipisstableaccurate(AD)BGilbert,BClarkeGroundingforlowandhighfrequencycircuitsPBrokaw,JBarrowFastestlObitADCssuperiordynamicperformance(AD)CLane,DDuffApplicationdecidesoptimalprocessorarchitectureBFine,DFair,AsktheApplicationsEngineer:NoisetopicsJBryant,LCountsElectronicadjustmentmadeeasywiththeTRIMDAC"WHeinzer,JBuxtonRAMDACupgradeenhancesVGAgraphics(CEGIDAC)"BSchweberIndexVlljvBestofAnalogDialoguePREFACEANDINTRODUCTIONThisspecialissueofAnalogDialogueisofferedasabonustoourfaithfulreadersandanencouragementtonewreadersWehavereprintedhereasmallbutrepresentativeportionofthematerialthathasappearedduringthefirstyearsofthispublication'sexistenceOurmotivesarecelebratory,historical,andpracticalWeareofcoursecelebratingtwentyfiveyearsofunbrokenpublication,whichresultedinsomesixtyissuesofAnalogDialogueTheyhaveinformed,enlightened,andoccasionallyeducatedmorethanagenerationofengineersandscientistsaboutproducts,practice,andideasforhighperformancesignalprocessingbyanalog,digital,andmixedmeansThetotalityofthepagesofAnalogDialogueisreallyahistoryoftechnologyatAnalogDevicesitdocumentsouroutstandingsuccessesandlesssuccessfulefforts,includingthose(bothworthyandunworthy)thathavesubsequentlyfallen,moreorlessquietly,intooblivionForthebenefitoffuturegenerations,wefeltthatasmallernumberofselectedpagesexemplifyingourmoresuccessfuleffortswouldbemorelikelytobereadinthecontextofexistingrealityThearticleschosenforthisissueareprincipallythosethatscoredamongthehighest(ordescribeproductsthatscoredthehighest)inreturnsfromasurveyofourNorthAmericanreadersAsidefromhistoryandnostalgia,ofwhatvalueisthispublicationThismajorvirtue:itcontainsalargecollectionofarticlesrelatingtopracticenoise,settlingtime,bypassing,shielding,grounding,etcwhenoriginallypublished,theyprovidedarealcontributionthatwashardtofindinbooks,andeventodaytheycontaininformationbothtimelessandusefulThereisacontinuingdemandforreprintsofthesearticles,becausetheyareoftenreferredtointhepagesofAnalogDialogueandelsewhereHavingthempublishedtogetherinoneplacemakesthisausefulreferencevolume,whichwillmakeunnecessarythesearchforelusivebacknumbersofAnalogDialogue,especiallyastheygooutofprintThearticlespublishedherefallintoseveralcategories:Therearetheaforementionedpracticearticlesinaddition,therearearticlesontechniques,ideas,andapplicationsFinally,thereareseveralarticlesthatintroducedlandmarkproductsSincethisisaretrospectivepublication,wehavesoughttopresentallarticlesessentiallyastheyappearedatthetimefromtheoriginalartwork,ifavailable,withthebarestminimumofeditingHowever,wehavesoughttocorrectknownmistakesInordertoavoiddifficultieswithotherformsoforganization,thearticlesinthispublicationappearinchronologicalorder,startingwithvolumeI,numberButinorderforthebooktobeusefulasareferencesource,wehaveprovidedanextensiveIndexatthebackthiswillpermitthereadertofindmaterialrelatingtoaparticularinterestwhereveritappearsThecoverwasdesignedandexecutedbyShelleyECohaneofDesignEncounters,Hingham,MassachusettsItisaphotoofacolageassembledinasetofprinter'straysBestofAnalogDialogueABRIEFHISTORYAnalogDialogueoriginatedinasameansofcommunicatingwithourcustomersandprospectsatapracticaltechnicallevelItsaimistoinformreadersaboutnewproductsandtechnologies,applicationsideas,practicalapproachestoimplementation,andtoprovidetutorialsandothermaterialthatseemsnecessarytohelpourreaderssolvetheirproblemswithandthroughtheuseofourproductsandideasRatherthanoursimplyspewingforthinformationthatmightormightnotbeuseful,the"Dialogue"inourtitlemeansthatinputfromreadersisalwayswelcome,intheformofcomments,suggestions,proposedarticlesandwhenappropriate,manuscriptsTheundersignedhasbeenEditorsinceThroughhistorywithAnalogDevicesAnalogDevices,IncopeneditsdoorsforbusinessinwiththeobjectiveofsatisfyingtheneedsofagrowingmarketforhighperformanceanalogcomponentsWhileourinitialconcentrationwasalmostsolelyonoperationalamplifiermodulesAnalogDialogue'sfirstsubtitlewas"Ajournalfortheexchangeofoperationalamplifiertechnology"'bywewerealsomanufacturinganalogfunctioncircuitanddataconvertermodules"Ajournalfortheexchangeofanalogtechnology"andwehadopenedourfirstproprietaryICfabthroughourinvestmentinNovaDevices,whichlaterbecameAnalogDevicesSemiconductorBytheendofourfirstdecade"Aforumfortheexchangeofcircuittechnology:analoganddigital,monolithicanddiscrete",wehadbecomealeaderinmodulardataconvertersandhadproducedmonolithicallyavarietyofhighprecisionopamps,instrumentationamps,ananalogmultiplierandtwohighlysuccessfulICdaconvertersthelObitCMOSADSandthetwochip(compoundmonolithicintegration)bitADSInthefollowingdecade,theICinnovationscamethickandfastinadditiontoaplethoraofCMOS,IL,andBiMOSconverters,singlechipIChighlightsofthisperiodincludedtheADSSvoltprecisionvoltagereference,theADSVlfconverter,theADSlasertrimmedprecisionanalogmultiplier,andtheADSprecisiontemperaturetocurrentconverterThroughouracquisitionofComputerLabs,webecameamajorplayerinthevideoconvertermarketandinthesystemsarea,weofferedanumberofbreadboxsizedsystems"Aforumfortheexchangeofcircuitsandsystemsformeasurementandcontrol",includingtheMACSYMmeasurement­andcontrolcomputerandtheLTSseriesofbenchtoptesters"Aforumfortheexchangeofcircuitsandsystemsformeasurement,control,andtest"Morerecently,ourinnovativeofferingsincludedCMOSdigitalsignalprocessingbuildingblocks"Aforumfortheexchangeofcircuitsandsystemsforrealworldsignalprocessing"andapowerful,easytoprogramfamilyofsinglechipDSPs,aswellasahighlydevelopedASICtechnologyI"Aforumfortheexchangeofcircuits,systems,andsoftwareforrealworldsignalprocessing"Ourmanufacturingcapabilitiesgrewtoincludecomplementarybipolar,severalvarietiesandgenerationsofanalogBiMOS,andveryhighspeedprocessesTheflowofnewproductsforanaloganddigitalsignalprocessingcontinued,withhighresolutionsigmadeltatechnology,highspeedconvert­ersprecision,currentfeedback,andelectrometeropamps,widebandlogampsandseveralseriesofproductsspecificallydesignedforaudio,automotive,diskdrive,ATE,andothermarketsAsweevolve,wefind,moreandmore,thatourgreateststrengthhasbeenandwillbeourcustomersAnalogDevicesislookingforwardenthusiasticallytocontinuingtoshareproductsandideaswithyouforatleastanotherquartercenturyDanSheingoldEditor,AnalogDialogueBestofAnalogDialogueviDialogueAforumfortheexchangeofcircuitsandsystemsandsoftwareforrealworldsignalprocessing·(Volumesto)Thissubheadwouldappeartohaveenlargedourchartersubstantially,buttheintroductionofdigitalsignalprocessingtechnologieshasmerelyincludedthepurelydigitalinadditiontotheanalogandmixedsignalprocessingwe'vebeenpracticingsincetheearliestdays(Remember,signalsarealwaysanalogintherealworld,andmeasure­ment,control,andtestareallmanifestationsofsignalprocessing)Also,wehaveinfactbeendeeplyintosoftwareeversincetheintroductionofMACSYMII,withitsMACBASIClanguage,andthevariousmeasurementandcontrolsoftwarepackagesthatgowithourothersubsystemproductsThereallyradicaldepartureisthatthe"systems"inoursubheadnowincludearapidlygrowingnumberofapplicationspecificandcustomsystemsonmonolithicVlSIchipsaswellasDSPmicrocomputersDemandforthemSeemstobeincreasingmuchmorerapidlythanforboxesandboardsIssueintroducedtheeraofdigitalsignalprocessingatAnalogDevices,viaCMOSmultipliersandotherDSPICcomponentsTheword"software"appearedstartingwith,sinceDSPbyitsnaturerequiressoftwareandlateroursinglechipmicrocomputerswouldrequirevolumestobewrittenonapplicationprogramsandcross­softwarefordevelopmentsystemsThissectioncontainsrepresentativesofthediversityofarticlespub­lishedduringthisperiod,inclUdingthefirstarticlefromournewlyacquiredPMIDivision(formerlyPrecisionMonolithics,Inc)ontheTrimDAC'":•Practice:Avoidingpassivecomponentpitfalls,GroundrulesforhighspeedcircuitsDCamplifiernoiserevisited"AsktheApplica­tionsEngineer"ontrimming,VFconverters,andnoisetopicsGroundingforlowandhighfrequencycircuits•Applications:DigitalFIRfilterswithouttears,Fas,simpleapproxi­mationoffunctionsusingNewtonRaphson,Applicationdecidesoptimalprocessorarchitecture•Innovativeproducts:CompletemonolithicY(ZJ)()mandlogfunctionchip(AD)floatingpointmultiplierandALUchipsusingIEEE(ADSP,)fast,flexibleCMOSsingleehipmicroprocessorforDSP(ADSP)monolithicdigitallyprogrammabledelaygen­erator(AD)fastprecisionopampsincomplementarybipolarprocess(ADseries)sensortoserialcommunicationsmodules(Series)monolithicdctoMHzlogampchip(AD)fastestbitflashADCsinEClandCMOS(ADS)electronicadjustmentmadeeasywiththeTrimDAC'·andtheCEGIDAC'·greatlyenhancesVGAgraphics,eliminating"jaggies"andincreas­ingrangeofcolor

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