LM566

LM566CVoltageControlledOscillatorFebruary1995

LM566CVoltageControlledOscillator

GeneralDescription

TheLM566CNisageneralpurposevoltagecontrolledoscil-latorwhichmaybeusedtogeneratesquareandtriangularwaves??thefrequencyofwhichisaverylinearfunctionofacontrolvoltage??Thefrequencyisalsoafunctionofanexter-nalresistorandcapacitor??

TheLM566CNisspecifiedforoperationoverthe0??Ctoa70??Ctemperaturerange??

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Hightemperaturestability

Excellentsupplyvoltagerejection

10to1frequencyrangewithfixedcapacitor

Frequencyprogrammablebymeansofcurrent??voltage??resistororcapacitor

Applications

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Features

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Widesupplyvoltagerange??10Vto24VVerylinearmodulationcharacteristics

FMmodulationSignalgenerationFunctiongenerationFrequencyshiftkeyingTonegeneration

ConnectionDiagram

Dual-In-LinePackage

TypicalApplication

1kHzand10kHzTTLCompatibleVoltageControlledOscillator

TL??H??7854–2

OrderNumberLM566CNSeeNSPackageNumberN08E

TL??H??7854–3

C1995NationalSemiconductorCorporationTL??H??7854RRD-B30M115??PrintedinU??S??A??

AbsoluteMaximumRatings

IfMilitary??Aerospacespecifieddevicesarerequired??pleasecontacttheNationalSemiconductorSalesOffice??Distributorsforavailabilityandspecifications??PowerSupplyVoltage

PowerDissipation(Note1)

OperatingTemperatureRange??LM566CNLeadTemperature(Soldering??10sec??)

26V1000mW0??Ctoa70??C

a260??C

ElectricalCharacteristicsVCCe12V??TAe25??C??ACTestCircuit

Parameter

MaximumOperatingFrequencyVCOFree-RunningFrequency

InputVoltageRangePin5AverageTemperatureCoefficientofOperatingFrequencySupplyVoltageRejectionInputImpedancePin5VCOSensitivityFMDistortion

MaximumSweepRateSweepRangeOutputImpedancePin3Pin4

SquareWaveOutputLevelTriangleWaveOutputLevelSquareWaveDutyCycleSquareWaveRiseTimeSquareWaveFallTimeTriangleWaveLinearity

a1VSegmentat

Conditions

Min

R0e2kC0e2??7pFCOe1??5nFROe20kfOe10kHz

0??5

LM566CTyp1

Max

Units

MHz

b300a30%

??????VCC

200

10–20V

0??5

ForPin5??From

8–10V??fOe10kHz

g10Tviation

VCC

ppm????C

2

%??VMX

7??21??5

kHz??V%MHz

0??116??60??2110??15050

6??0

XXVp-pVp-p

60

%nsns%

RL1e10kRL2e10k

5??02??040

5??42??4502050

??????VCC

0??5

Note1??ThemaximumjunctiontemperatureoftheLM566CNis150??C??Foroperationatelevatedjunctiontemperatures??maximumpowerdissipationmustbederatedbasedonathermalresistanceof115??C??W??junctiontoambient??

ApplicationsInformation

TheLM566CNmaybeoperatedfromeitherasinglesupplyasshowninthistestcircuit??orfromasplit(g)powersup-ply??Whenoperatingfromasplitsupply??thesquarewaveoutput(pin3)isTTLcompatible(2mAcurrentsink)withtheadditionofa4??7kXresistorfrompin3toground??

A0??001mFcapacitorisconnectedbetweenpins5and6topreventparasiticoscillationsthatmayoccurduringVCOswitching??fOe

2??4(VabV5)ROCOVawhere

2KkROk20K

andV5isvoltagebetweenpin5andpin1??

2

SchematicDiagram

3

TL??H??7854–1TypicalPerformanceCharacteristics

OperatingFrequencyasaFunctionofTimingResistor

OperatingFrequencyasaFunctionofTimingCapacitor

NormalizedFrequencyasaFunctionofControlVoltage

PowerSupplyCurrentTemperatureStabilityVCOWaveforms

FrequencyStabilityvsLoadResistance(SquareWaveOutput)

FrequencyStabilityvsLoadImpedance(TriangleOutput)SquareWaveOutputCharacteristics

TriangleWaveOutputCharacteristics

TL??H??7854–4

ACTestCircuit

TL??H??7854–5

TL??H??7854–6

4

5

LM566CVoltageControlledOscillatorPhysicalDimensionsinches(millimeters)

MoldedDual-In-LinePackage(N)

OrderNumberLM566CNNSPackageNumberN08E

LIFESUPPORTPOLICY

NATIONAL’SPRODUCTSARENOTAUTHORIZEDFORUSEASCRITICALCOMPONENTSINLIFESUPPORTDEVICESORSYSTEMSWITHOUTTHEEXPRESSWRITTENAPPROVALOFTHEPRESIDENTOFNATIONALSEMICONDUCTORCORPORATION??Asusedherein??1??Lifesupportdevicesorsystemsaredevicesorsystemswhich??(a)areintendedforsurgicalimplantintothebody??or(b)supportorsustainlife??andwhosefailuretoperform??whenproperlyusedinaccordancewithinstructionsforuseprovidedinthelabeling??canbereasonablyexpectedtoresultinasignificantinjurytotheuser??

NationalSemiconductorCorporation1111WestBardinRoad2??Acriticalcomponentisanycomponentofalifesupportdeviceorsystemwhosefailuretoperformcanbereasonablyexpectedtocausethefailureofthelifesupportdeviceorsystem??ortoaffectitssafetyoreffectiveness??

NationalSemiconductorEuropeFax??(a49)0-180-5308586NationalSemiconductorHongKongLtd??13thFloor??StraightBlock??NationalSemiconductorJapanLtd??Tel??81-043-299-2309

LM566CVoltageControlledOscillatorPhysicalDimensionsinches(millimeters)

MoldedDual-In-LinePackage(N)

OrderNumberLM566CNNSPackageNumberN08E

LIFESUPPORTPOLICY

NATIONAL’SPRODUCTSARENOTAUTHORIZEDFORUSEASCRITICALCOMPONENTSINLIFESUPPORTDEVICESORSYSTEMSWITHOUTTHEEXPRESSWRITTENAPPROVALOFTHEPRESIDENTOFNATIONALSEMICONDUCTORCORPORATION??Asusedherein??1??Lifesupportdevicesorsystemsaredevicesorsystemswhich??(a)areintendedforsurgicalimplantintothebody??or(b)supportorsustainlife??andwhosefailuretoperform??whenproperlyusedinaccordancewithinstructionsforuseprovidedinthelabeling??canbereasonablyexpectedtoresultinasignificantinjurytotheuser??

NationalSemiconductorCorporation1111WestBardinRoad2??Acriticalcomponentisanycomponentofalifesupportdeviceorsystemwhosefailuretoperformcanbereasonablyexpectedtocausethefailureofthelifesupportdeviceorsystem??ortoaffectitssafetyoreffectiveness??

NationalSemiconductorEuropeFax??(a49)0-180-5308586NationalSemiconductorHongKongLtd??13thFloor??StraightBlock??NationalSemiconductorJapanLtd??Tel??81-043-299-2309

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