常用运放电路集锦

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Op

Amp

Circuit

Collection

AN-31

NationalSemiconductor

ApplicationNote31

February1978OpAmpCircuitCollection

SECTION1󰁛BASICCIRCUITS

InvertingAmplifier

VOUTebR2R1VIN

RINeR1

TL󰁋H󰁋7057–1Non-InvertingAmplifier

VOUTeR1aR2R1VIN

TL󰁋H󰁋7057–2

DifferenceAmplifier

VOUTe󰀣R1aR2R3aR4JR4R1V2bR2R1V1

ForR1eR3andR2eR4

VOUTeR2R1(V2bV1)

R1UR2eR3UR4TL󰁋H󰁋7057–3

ForminimumoffseterrorduetoinputbiascurrentInvertingSummingAmplifier

VOUTebR4󰀣V1R1aV2R2aV3R3J

R5eR1UR2UR3UR4

Forminimumoffseterrorduetoinputbiascurrent

TL󰁋H󰁋7057–4

Non-InvertingSummingAmplifier

󰀁RSe1kfor1%accuracy

TL󰁋H󰁋7057–5InvertingAmplifierwithHighInputImpedance

󰀁SourceImpedancelessthan100kgiveslessthan1%gainerror󰀟

TL󰁋H󰁋7057–6FastInvertingAmplifierwithHighInputImpedance

TL󰁋H󰁋7057–7Non-InvertingACAmplifier

VOUTeR1aR2R1VIN

RINeR3

R3eR1UR2TL󰁋H󰁋7057–8

C1995NationalSemiconductorCorporationRRD-B30M115󰁋PrintedinU󰀟S󰀟A󰀟

PracticalDifferentiator

fce12qR2C1

fhe12qR1C1e12qR2C2

fcmfhmfunitygainTL󰁋H󰁋7057–9Integrator

VOUTeb1R1C1󰀣t2t1VINdt

fce12qR1C1

R1eR2

ForminimumoffseterrorduetoinputbiascurrentTL󰁋H󰁋7057–10

FastIntegrator

TL󰁋H󰁋7057–11CurrenttoVoltageConverter

VOUTelINR1

󰀁ForminimumerrorduetobiascurrentR2eR1

TL󰁋H󰁋7057–12

CircuitforOperatingtheLM101

withoutaNegativeSupply

TL󰁋H󰁋7057–13CircuitforGeneratingthe

SecondPositiveVoltage

TL󰁋H󰁋7057–14

2

NeutralizingInputCapacitance

toOptimizeResponseTime

CNsR1R2CS

TL󰁋H󰁋7057–15IntegratorwithBiasCurrentCompensation

󰀁Adjustforzerointegratordrift󰀟

Currentdrifttypically0󰀟1󰀷n󰁋A󰀂Coverb55󰀂Cto125󰀂Ctemperaturerange󰀟

TL󰁋H󰁋7057–16

VoltageComparatorforDriving

DTLorTTLIntegratedCircuits

TL󰁋H󰁋7057–17

ThresholdDetectorforPhotodiodes

TL󰁋H󰁋7057–18Double-EndedLimitDetector

VOUTe4󰀟6Vfor

VLTsVINsVUT

VOUTe0Vfor

VINkVLTorVINlVUTTL󰁋H󰁋7057–19

MultipleApertureWindowDiscriminator

TL󰁋H󰁋7057–20

3

OffsetVoltageAdjustmentforInvertingAmplifiers

UsingAnyTypeofFeedbackElement

RANGEegV󰀣R2R1J

TL󰁋H󰁋7057–21OffsetVoltageAdjustmentforNon-InvertingAmplifiers

UsingAnyTypeofFeedbackElement

RANGEegV󰀣R2R1J

GAINe1aR5R4aR2

TL󰁋H󰁋7057–22

OffsetVoltageAdjustmentforVoltageFollowers

RANGEegV󰀣R3R1J

TL󰁋H󰁋7057–23OffsetVoltageAdjustmentforDifferentialAmplifiers

R2eR3aR4

RANGEegV󰀣R5R4J󰀣R1R1aR3J

GAINeR2R1TL󰁋H󰁋7057–24

OffsetVoltageAdjustmentforInverting

AmplifiersUsing10kXSourceResistanceorLess

R1e2000R3UR4

R4UR3s10kX

RANGEegV󰀣R3UR4R1JTL󰁋H󰁋7057–25

4

SECTION2󰁛SIGNALGENERATION

LowFrequencySineWaveGeneratorwithQuadratureOutput

TL󰁋H󰁋7057–26

HighFrequencySineWaveGeneratorwithQuadratureOutput

foe10kHz

TL󰁋H󰁋7057–27

5

Free-RunningMultivibrator

󰀁Chosenforoscillationat100Hz

TL󰁋H󰁋7057–28WeinBridgeSineWaveOscillator

R1eR2

C1eC2󰀁Eldema1869

fe12qR1C110V󰀷14mABulb

TL󰁋H󰁋7057–29

FunctionGenerator

TL󰁋H󰁋7057–30

PulseWidthModulator

TL󰁋H󰁋7057–31

6

BilateralCurrentSource

IOUTeR3VINR1R5

R3eR4aR5

R1eR2TL󰁋H󰁋7057–32BilateralCurrentSource

IOUTeR3VINR1R5

R3eR4aR5

R1eR2

TL󰁋H󰁋7057–33

WeinBridgeOscillatorwithFETAmplitudeStabilization

R1eR2

C1eC2

fe12qR1C1TL󰁋H󰁋7057–34

7

LowPowerSupplyforIntegratedCircuitTesting

TL󰁋H󰁋7057–35󰀁VOUTe1V󰁋kX

TL󰁋H󰁋7057–91

PositiveVoltageReference

TL󰁋H󰁋7057–36PositiveVoltageReference

TL󰁋H󰁋7057–37

8

NegativeVoltageReference

TL󰁋H󰁋7057–38NegativeVoltageReference

TL󰁋H󰁋7057–39

PrecisionCurrentSink

IOeVINR1

VINt0V

TL󰁋H󰁋7057–40PrecisionCurrentSource

TL󰁋H󰁋7057–41

SECTION3󰁛SIGNALPROCESSING

Differential-InputInstrumentationAmplifier

R4R2eR5R3

AVeR4R2

TL󰁋H󰁋7057–42

9

VariableGain󰀷Differential-InputInstrumentationAmplifier

󰀁Gainadjust

AVe10b4R6

TL󰁋H󰁋7057–43

InstrumentationAmplifierwithg100VoltCommonModeRange

R3eR4

R1eR6e10R3

AVeR7R6

󰀁󰀄MatchingdeterminescommonR1eR5e10R2moderejection󰀟R2eR3

TL󰁋H󰁋7057–44

10

InstrumentationAmplifierwithg10VoltCommonModeRange

R1eR4

R2eR5

R6eR7

󰀄󰀁MatchingDeterminesCMRR

AVeR6R2󰀣1a2R1R3J

TL󰁋H󰁋7057–45

HighInputImpedanceInstrumentationAmplifier

R1eR4󰀥R2eR3

AVe1aR1R2󰀁󰀄MatchingdeterminesCMRR

󰀍MaybedeletedtomaximizebandwidthTL󰁋H󰁋7057–46

BridgeAmplifierwithLowNoiseCompensation

󰀁Reducesfeedthroughofpowersupplynoiseby20dBandmakessupplybypassingunnecessary󰀟

󰀄Trimforbestcommonmoderejection

󰀍Gainadjust

TL󰁋H󰁋7057–47

11