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Electronic Devices for Analog Signal Processing PDF

264 Pages·2012·3.12 MB·English
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Springer Series in Advanced Microelectronics 33 TheSpringerSeriesinAdvancedMicroelectronicsprovidessystematicinformation on all the topics relevant for the design, processing, and manufacturingof micro- electronic devices. The books, each prepared by leading researchers or engineers in their fields, cover the basic and advanced aspects of topics such as wafer processing, materials, device design, device technologies, circuit design, VLSI implementation, and subsystem technology. The series forms a bridge between physicsandengineeringandthevolumeswillappealtopracticingengineersaswell asresearchscientists SeriesEditors: Dr.KiyooItoh HitachiLtd.,CentralResearchLaboratory,1-280Higashi-Koigakubo Kokubunji-shi,Tokyo185-8601,Japan ProfessorThomasLee Department of Electrical Engineering, Stanford University, 420 Via Palou Mall, CIS-205Stanford,CA94305-4070,USA ProfessorTakayasuSakurai CenterforCollaborativeResearch,UniversityofTokyo,7-22-1Roppongi Minato-ku,Tokyo106-8558,Japan ProfessorWillyM.C.Sansen ESAT-MICAS,KatholiekeUniversiteitLeuven,KasteelparkArenberg10 3001Leuven,Belgium ProfessorDorisSchmitt-Landsiedel Lehrstuhlfu¨rTechnischeElektronik,TechnischeUniversita¨tMu¨nchen Theresienstrasse90,Geba¨udeN3,80290Mua¨nchen,Germany Forfurthervolumes: http://www.springer.com/series/4076 Yu. K. Rybin Electronic Devices for Analog Signal Processing 123 Yu.K.Rybin TomskPolytechnicUniversity ElectroPhysicalDepartment Leninstreet30 634050Tomsk Russia [email protected] ISSN1437-0387 ISBN978-94-007-2204-0 e-ISBN978-94-007-2205-7 DOI10.1007/978-94-007-2205-7 SpringerDordrechtHeidelbergLondonNewYork LibraryofCongressControlNumber:2011940132 ©SpringerScience+BusinessMediaB.V.2012 Nopartofthisworkmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformorby anymeans,electronic,mechanical,photocopying,microfilming,recordingorotherwise,withoutwritten permissionfromthePublisher,withtheexceptionofanymaterialsuppliedspecificallyforthepurpose ofbeingenteredandexecutedonacomputersystem,forexclusiveusebythepurchaserofthework. Printedonacid-freepaper SpringerispartofSpringerScience+BusinessMedia(www.springer.com) Abstract This book deals with modern devices for analog signal processing. A particular attentionispaidtothemainelementofsuchdevices:integraloperationalamplifiers (op-amps) and electronic devices based on them, including scaling, summing, integrating,andfilteringlineardevices.Theprinciplesofconstructionofnonlinear devicesin op-ampsarepresentedalongwith variouscircuitsolutionsforlimiting, rectification,andpiecewiselinearconversionofinputsignals.Sinewaveandpulse oscillatorsareanalyzed.Someexamplesofapplyingthesedevicestoprocessingof signalsfromresistance,inductive,optical,andtemperaturesensorsarepresented. This book is intended for engineers and post graduated students, learning the course“InstrumentMaking”andforadvancedlearningofthecourses“Electronics part III” and “Electronicsand MicroprocessorHardware,” but is can be also used by other students and engineers dealing with the design of electronic devices and systems. This book has been prepared at the Chair “Computer Measuring Systems and Metrology”oftheTomskPolytechnicUniversity. v Introduction This book considers electronic devices applied to process analog signals in in- strument making, automation, measurements, and other branches of technology. They perform various transformations of electrical signals: scaling, integration, logarithming,etc.Suchdevicesareconsideredintutorialsonelectronics.Theneed intheirdeeperstudyiscaused,ontheonehand,bythegreatdemandsofextending the range of input signals, as well as increasing the accuracy and speed of such devices,whichusuallyreceiveinsufficientattention.Ontheotherhand,newdevices arisepermanently,whicharenotconsideredinelectronictutorialsyet,butalready widelyappliedinpractice. Chapter 1 concerns the principles of design of modern operational amplifiers (op-amps). This choice is caused by the fact that an op-amp is now one of the most popular and versatile semiconductor components of almost any electronic device. Since the advent of operational amplifiers, their circuits and fabrication technologyhavebeenpermanentlyimproved.Theeffortsofdeveloperswereaimed atthedesignandfabricationofdifferentop-amptypeswithvariouscharacteristics. As a result, the parameters of amplifiers with the traditional structure (voltage- controlled amplifiers) have been improved and new current-controlled op-amps, rail-to-rail amplifiers, clamping amplifiers, and specialized amplifiers of sensor signals appeared. The information about these amplifiers is mostly concentrated in scientific journals and manufacturers’ materials, but is almost lacking in the educationalliterature. Chapter 2 is devoted to the consideration of features of linear and nonlinear operationswithsignals.Theexperienceinteachingtheelectronicsshowsthatreader notalwaysareabletodeterminecorrectlythefunctionperformedbyanelectronic device, fail to select the method for its analysis, and, as a consequence, obtain mistakenresults.Therefore,thischapterconsiderstheprincipaldifferencesoflinear andnonlineartransformationsbyinvokingtheconceptsofthespectrumofinputand convertedsignals. Chapter 3 presents linear functional devices based on op-amps: inverting, noninverting,summing,andinstrumentalamplifierswiththenormalizedgain.These devices are now widely used for the primary processing of measuring, acoustic, vii viii Introduction and video information, where they execute the functions of matching, precision amplification,couplingwithinformationtransmissionlines,etc. Chapter 4 is devoted to nonlineardevices. Itconcernsthe generalissues of the theory of nonlinear devices in op-ampsand the practical circuits of such devices: comparators,logarithmators,rectifiers,limiters,functionalsignalconverters. Chapters 5 and 6 consider sine wave and pulse oscillators. The range of applicability of such oscillators is extremely wide. They are used in devices for exciting sensors of physical parameters, in meters of frequency characteristics of amplifiers and filters, in devices for transformation of signal spectra, in clocking andsynchronizationdevices,etc.Aswasmentionedinbook(HorowitzP.,HillW. The Art of Electronics. Second Edition. Cambridge University Press, England, 1998), a device without generator either is capable of nothing or is designed to beconnectedtootherdevice(which,mostprobably,includesagenerator).Despite this, such devices receive insufficient attention in the educational literature. Their considerationisoftenfragmentaryanddoesnotfavortheunderstandingofprocesses occurringin them. Chapter 5 considers sine wave oscillators and the main known approachestotheanalysisoftheprocessesofself-oscillationexcitationandsettling inthem.Inparticular,theanalysisbythemethodofcomplexamplitudes,themethod of differential equations, the method of phase plane, and the two port method is discussed. The preferableareas of applicationof these methodsare demonstrated. Thewell-knownamplitudeandphasebalanceconditionsarecriticized.Chapter6is devotedtopulseoscillators.Itiswell-knownthatpulsedsignalsandtheirderivatives havesomefeatures:partswithfastandslowchange,widespectrum.Pulsedsignals are generated by specific oscillating systems, for which the general conditions of self-oscillationexcitationareobtained. Chapter 7 is devotedto the considerationof practicalcircuits forprocessingof signals from sensors of physical parameters: resistance, inductive, semiconductor sensorsandcouplingofsensorswithelectronicdevices. This book is organizednontraditionally.Its main goalis notonly to give some knowledge on modern electronic devices, but also to inspire students to the more detailedstudyofthesedevices,understandingoftheiroperation,abilitytoanalyze circuits,synthesizenewdevices,andassessthepossibilitiesoftheirapplicationfor solutionofparticularpracticalproblems. As was already mentioned, the course is divided into seven chapters. Each chapter includes the theoretical material, questions, and tests to check how the studentshavelearnedthetheoreticalmaterialintheprocessofindependentcognitive work,aswellashowreadyheorsheistopracticalandlaboratoryworks.Themost difficultquestionsaremarkedbyasterisk(cid:2) andcanbegiventoadvancedreaders. Paragraphswayofwritingbyitalicsareveryimportantfortheunderstandingof thestudiedmaterialandtogethertheycanserveabriefsummaryofasection.The textmarkedbyitalicindicatesnewornon-traditionalconcepts.Calculatedexamples areindicatedby(cid:2). Contents 1 ModernOperationalAmplifiers............................................ 1 1.1 Introduction............................................................ 1 1.2 ApplicationofOperationalAmplifiers ............................... 2 1.3 AmplifierswithPotentialInput....................................... 3 1.4 ElectricalModelsofOperationalAmplifiers......................... 8 1.5 AnalysisoftheEffectofSignalSourceandLoad ................... 13 1.6 AmplifierswithCurrentInput......................................... 14 1.7 AmplifierswithCurrentOutput....................................... 19 1.8 Current-DifferencingAmplifiers...................................... 24 1.9 Rail-to-RailAmplifiers................................................ 26 1.10 InstrumentalAmplifiers............................................... 27 1.11 ClampingAmplifiers .................................................. 27 1.12 IsolationAmplifiers ................................................... 28 1.13 Conclusions............................................................ 29 References..................................................................... 33 2 FunctionalTransformationsofSignals.................................... 35 2.1 Introduction............................................................ 35 2.2 LinearTransformationsofSignals.................................... 36 2.3 NonlinearTransformationsofSignals................................ 40 2.4 Conclusions............................................................ 42 References..................................................................... 44 3 LinearFunctionalUnitsinOperationalAmplifiers...................... 45 3.1 Introduction ........................................................... 45 3.2 GeneralCircuitDesignsofLinearDevices........................... 45 3.3 Scalers.................................................................. 49 3.3.1 InvertingAmplifiers........................................... 49 3.3.2 NoninvertingAmplifier ....................................... 53 3.3.3 AmplifiersBasedonInvertingandNoninvertingAmplifiers 54 3.4 IntegratingAmplifiers................................................. 60 3.4.1 InvertingIntegratingAmplifiers.............................. 60 ix x Contents 3.4.2 NoninvertingIntegratingAmplifier........................... 64 3.4.3 IntegratingAmplifierwithTwoInputs....................... 65 3.4.4 DoubleIntegratingAmplifier................................. 66 3.5 DifferentiatingAmplifier.............................................. 67 3.6 ActiveFiltersConstructedinOp-amps............................... 69 3.7 Conclusions............................................................ 77 References..................................................................... 80 4 NonlinearDevicesinOp-amps ............................................. 81 4.1 Introduction............................................................ 81 4.2 VoltageComparator ................................................... 83 4.3 LogarithmicAmplifier................................................. 84 4.4 OperationalRectifiers ................................................. 90 4.5 Full-WaveOperationalRectifiers..................................... 92 4.6 VoltageLimitersandOverloadProtectionCircuits.................. 99 4.7 Op-ampFunctionGenerators ......................................... 103 4.8 Conclusions............................................................ 108 References..................................................................... 110 5 SineWaveOscillators........................................................ 111 5.1 Introduction............................................................ 111 5.2 OscillatoryProcesses.................................................. 118 5.2.1 AnalysisbytheMethodofPhasePlane...................... 118 5.2.2 AnalysisbytheMethodofComplexAmplitudes ........... 123 5.2.3 AnalysisbytheMethodofDifferentialEquations........... 126 5.2.4 AnalysisbytheTwo-PortNetworkMethod ................. 130 5.3 FeaturesofOscillatingSystems....................................... 133 5.4 RCSine-WaveOscillators............................................. 134 5.4.1 PrinciplesoftheTheoryofRCOscillators................... 134 5.4.2 TheOscillationAmplitudeStabilizationand NonlinearDistortions ......................................... 141 5.5 LCSineWaveOscillators............................................. 148 5.5.1 Transformer-CoupledLCOscillators......................... 148 5.5.2 Three-PointOscillators........................................ 152 5.6 QuartzOscillators...................................................... 154 5.7 NegativeResistanceOscillators....................................... 155 5.8 SynthesisofOscillatingSystemsofRCOscillators ................. 160 5.9 Conclusions............................................................ 167 References..................................................................... 172 6 PulseOscillators.............................................................. 173 6.1 Introduction............................................................ 173 6.2 SelectedIssuesofTheoryofPulseOscillators....................... 174 6.2.1 TheConditionsforExcitationofPulsedOscillations ....... 176 6.3 Op-ampPulseOscillators ............................................. 184 6.4 PossibleCircuitsofOp-ampOscillators.............................. 194

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Electronic Devices for Analog Signal Processing is intended for engineers and post graduates and considers electronic devices applied to process analog signals in instrument making, automation, measurements, and other branches of technology. They perform various transformations of electrical signals
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