CLC114资料

CLC114Quad,LowPowerVideoBufferFebruary2001

CLC114

Quad,LowPowerVideoBuffer

GeneralDescription

TheCLC114isahighperformance,closeloopquadbufferintendedforpowersensitiveapplications.Requiringonly30mWofquiescentpowerdissipationperchannel(±5Vsupplies),theCLC114offersasmallsignalbandwidthof200MHz(0.5Vpp)andaslewrateof450V/µs.

Designedspecificallyforhighdensitycrosspointswitchandanalogmultiplexerapplications,theCLC114offersexcellentlinearityandwidechannelisolation(62dB@10MHz).Drivingatypicalcrosspointswitchload,theCLC114offersdifferen-tialgainandphaseperformanceof0.08%and0.1%gainflatnessthrough30MHzistypically0.1dB.

Withitspatentedclosedlooptopology,theCLC114hassignificantperformanceadvantagesoverconventionalopenloopdesigns.Applicationsrequiringlowoutputimpedanceandtrueunitygainstabilitythroughveryhighfrequencies(activefilters,dynamicloadbuffering,etc.)WillbenefitfromtheCLC114’ssuperiorperformance.

Constructedusinganadvanced,complementarybipolarpro-cessandNational’sprovenhighspeedarchitectures,theCLC114isavailableinseveralversionstomeetavarietyofrequirements.

EnhancedSolutions(Military/Aerospace)SMDNumber:5962-92339

*Spacelevelversionsalsoavailable.

*Formoreinformation,visithttp://www.national/com/mil

nnnn450V/usslewrate

Lowpower,30mWperchannel(±5Vsup.)62dBchannelisolation(10MHz)

Specifiedforcrosspointswitchloads

Applications

nnnnnn

VideocrosspointswitchdriverVideodistributionbufferVideoswitchingbuffer

VideosignalingmultiplexingInstrumentationampsActivefilters

SmallSignalPulseResponse

Features

nClosedloop,quadbuffer

n200MHzsmallsignalbandwidth

DS012738-10

TypicalApplication

DS012738-21

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CLC114ConnectionDiagram

DS012738-3

Pinout

OrderingInformation

Package14-PinPlasticDIP14-PinPlasticSOIC

TemperatureRange

Industrial−40˚Cto+85˚C−40˚Cto+85˚C

PartNumberCLC114AJPCLC114AJE

PackageMarkingCLC114AJPCLC114AJE

NSCDrawingN14AM14A,B

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CLC114AbsoluteMaximumRatings(Note1)

IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheNationalSemiconductorSalesOffice/Distributorsforavailabilityandspecifications.SupplyVoltage(VCC)IOUTOutputisshortcircuitprotectedtoground,butmaximumreliabilitywillbemaintainedifIOUTdoesnotexceed...InputVoltage

MaximumJunctionTemperature

OperatingTemperatureRangeStorageTemperatureRange

LeadTemperature(Soldering10sec)ESDRating−40˚Cto+85˚C−65˚Cto+150˚C

+300˚C500V

±7V

OperatingRatings

ThermalResistancePackageMDIPSOIC

(θJC)65˚C/W55˚C/W

(θJA)115˚C/W125˚C/W

30mA±VCC+150˚C

ElectricalCharacteristics

(VCC=±5V,RL=100Ω;UnlessSpecified)Symbol

Parameter

ConditionsCLC114AIVOUT<0.5VPPVOUT<2VPPGainFlatness

GFPLGFPHGFRXTTRS1TRS2TS1TS01OSSRHD2HD3SNFGAILINVIODVIOIBNDIBNPSRRICCRINCINROVOIO

SettlingTimeto0.1%to0.01%OvershootSlewRate

2ndHarmonicDistortion3rdHarmonicDistortionEquivalentInputNoiseNoiseFloorSmallSignalGainIntegralEndpointLinearityOutputOffsetVoltage(Note3)AverageTemperatureCoefficientInputBiasCurrent(Note3)AverageTemperatureCoefficientPowerSupplyRejectionRatioSupplyCurrent,Total(Note3)InputResistanceInputCapacitanceOutputImpedanceOutputVoltageRangeOutputCurrent

DCNoLoad

NoLoad,Quiescent2VPP,20MHz2VPP,20MHz

PeakingPeakingRolloff

Crosstalk(AllHostile)RiseandFallTime

VOUT<0.5VPPDCto30MHz30MHzto200MHzDCto60MHz10MHz0.5VStep2VStep2VStep2VStep0.5VStep

0.00.00.1621.8510203450−50−58−1550.970.4Typ+25˚C20095

Max/MinRatings

(Note2)−40˚C

+25˚C

+85˚

Units

AmbientTemperature

FrequencyDomainResponseSSBWLSBW

-3dBBandwidth

>135>70<0.3<1.3<0.8>58<2.8<7<15<30<15>180<−34<−50<−153>0.95<1.0<±8.2<±40<±10<±62>48<17.0>0.3<3.5<5.0>±3.6>12

>135>70<0.2<0.7<0.8>58<2.8<7<15<30<10>200<−38<−50<−153>0.96<0.6<±5.0

–

>120>70<0.3<0.7<1.0>60<3.0<8<20<40<15>180<−38<−45<−153>0.96<0.5<±8.0<±30<±4<±25>46<16.0>2.0<3.5<3.5>±3.8>25

MHzMHzdBdBdBdBnsnsnsns%V/µsdBcdBcdBm1HzV/V%mVµV/˚CµAnA/˚CdBmAMΩpFΩVmA

TimeDomainResponse

DistortionAndNoiseResponse

>1MHz

100ΩLoad

Static,DCPerformance

±1V,FullScale

±0.5±9.0±1.0±6.0

5612.01.51.82.5

<±5

–

>48<16.5>1.0<3.0<3.5>±3.8>20

MiscellaneousPerformance

±4.0

25

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CLC114ElectricalCharacteristics

Symbol

Parameter

(Continued)

(VCC=±5V,RL=100Ω;UnlessSpecified)

Conditions

Typ

Max/MinRatings

(Note2)

Units

PerformanceDrivingaCrosspointSwitch

GainFlatnessVOUT<2VPPGainFlatnessDifferentialGainDifferentialPhase2ndHarmonicDistortion3rdHarmonicDistortionCrosstalk(AllHostile)

VOUT<2VPPDCto5MHzDCto30MHZ3.58&4.43MHz3.58&4.43MHz5MHz,2V

PP±0.02±0.1

0.080.1−60−43−58−43585442

dBdB%degdBcdBcdBcdBcdBdBdB

30MHz,2VPP5MHz,2VPP30MHz,2V5MHz10MHz30MHz

PPNote1:“AbsoluteMaximumRatings”arethosevaluesbeyondwhichthesafetyofthedevicecannotbeguaranteed.Theyarenotmeanttoimplythatthedevicesshouldbeoperatedattheselimits.Thetableof“ElectricalCharacteristics”specifiesconditionsofdeviceoperation.

Note2:Min/maxratingsarebasedonproductcharacterizationandsimulation.Individualparametersaretestedasnoted.Outgoingqualitylevelsaredeterminedfromtestedparameters.

Note3:AJ-level:spec.is100%testedat+25˚C.

TestLoad

DS012738-22

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CLC114TypicalPerformanceCharacteristics

GainandPhasevs.Load

OutputImpedance

DS012738-4

DS012738-5

InputImpedancePSRR

DS012738-6

DS012738-7

RecommendedRSvs.LoadCapacitance|S21|vs.CLwithRecommendedRSDS012738-9

DS012738-8

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CLC114TypicalPerformanceCharacteristics

SmallSignalPulseResponse

(Continued)

LargeSignalPulseResponse

DS012738-10

DS012738-11

Short-TermSettlingTimeIntegralLinearityError

DS012738-12

DS012738-13

OutputCurrentvs.TemperatureTypicalD.C.Errorsvs.Temperature

DS012738-14

DS012738-15

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CLC114TypicalPerformanceCharacteristics

EquivalentInputNoise

(Continued)

2ndand3rdHarmonicDistortion

DS012738-16DS012738-17

2-Tone,3rdOrderIntermodulationIntercept

DS012738-18

ApplicationDivision

Operation

TheCLC114isaquad,lowpower,highspeed,unitygainbuffer.Theclosedlooptopologyprovidesaccuracynotfoundinopenloopdesigns.Theinputstageincorporatesaslewenhancementcircuitwhichallowslowquiescentpowerwith-outsacrificingACperformance.PCBoardLayoutandCrosstalk

Highfrequencydevicesdemandagoodprintedcircuitboardlayoutforoptimumperformance.TheCLC114,withpowergainto200MHz,isnoexception.Agroundplaneandpowersupplybypassingwithgoodhighfrequencyceramiccapaci-torsincloseproximitytothesupplypinsisessential.Secondharmonicdistortioncanbeimprovedbyensuringequalcur-rentreturnpathsforboththepositiveandnegativesupplies.Thiscanbeaccomplishedbygroundingthebypasscapaci-torsatthesamepointinthegroundplanewhilekeepingthepowersupplysideofthebypasscapacitorswithin0.1”oftheCLC114supplypins.

Crosstalk(undesiredsignalcouplingbetweenbufferchan-nels)isstronglydependentonboardlayout.Closelyspacedsignaltracesonthecircuitboardwilldegradecrosstalkdue

7

tointerfacecapacitance.Forthisreasonitisrecommendedthatunusedpackagepins(2,4,6,11)beconnectedtothegroundplaneforbetterchannelisolationatthedevicepins.Similarly,crosstalkcanbeimprovedbyusingagroundedguardtracebetweensignaltraces.Thiswillreducethedis-tributedcapacitancebetweensignallines.

Followingaretwographsdepictingtheeffectsofcrosstalk.All-hostilecrosstalkismeasuredbydrivingthreeofthefourbufferssimultaneouslywhileobservingthefourth,undriven,channel.Figure2,“All-hostileCrosstalkIsolation”,showsthiseffectasafunctionofinputsignalfrequency.RListheresistiveloadforeachdrivenchannel.Figure3,“MostSus-ceptibleChannel-to-ChannelPulseCoupling”,describesoneeffectofcrosstalkwhenonechannelisdrivenwitha2VPPstep(tr=5ns)whiletheoutputoftheundrivenchannelismeasured.FromFigure2itcanbeobservedthatcrosstalkdecreasesasthesignalfrequencyisreduced.Similarly,thepulsecouplingcrosstalkwilldecreaseastherisetimein-creases.

EvaluationBoard

AnevaluationboardfortheCLC114isavailable.ThisboardmaybeorderedaspartCLC730023.

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CLC114ApplicationDivision

UnusedBuffer

(Continued)

DifferentialGainandPhase

TheCLC114wasdesignedtominimizedeferentialgainandphaseerrorswhendrivingthedistributedcapacitanceofavideocrosspointswitch.Refertothesection“PerformanceDrivingaCrosspointSwitch”fortypicalvalues.

Itisrecommendedthattheinputsofanyunusedbuffersbetiedtogroundthrough50Ωresistors.

DS012738-19

FIGURE1.RecommendedCircuit

DS012738-21

FIGURE2.All-HostileCrosstalkIsolation

DS012738-23

FIGURE3.MostsusceptibleChannel-to-ChannelPulseCoupling

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CLC114PhysicalDimensions

inches(millimeters)unlessotherwisenoted

14-PinSOIC

NSPackageNumberM14A

14-PinSOIC

NSPackageNumberM14B

9

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CLC114Quad,LowPowerVideoBufferPhysicalDimensions

inches(millimeters)unlessotherwisenoted(Continued)

14-PinMDIP

NSPackageNumberN14A

LIFESUPPORTPOLICY

NATIONAL’SPRODUCTSARENOTAUTHORIZEDFORUSEASCRITICALCOMPONENTSINLIFESUPPORTDEVICESORSYSTEMSWITHOUTTHEEXPRESSWRITTENAPPROVALOFTHEPRESIDENTANDGENERALCOUNSELOFNATIONALSEMICONDUCTORCORPORATION.Asusedherein:1.Lifesupportdevicesorsystemsaredevicesorsystemswhich,(a)areintendedforsurgicalimplantintothebody,or(b)supportorsustainlife,andwhosefailuretoperformwhenproperlyusedinaccordancewithinstructionsforuseprovidedinthelabeling,canbereasonablyexpectedtoresultinasignificantinjurytotheuser.

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2.Acriticalcomponentisanycomponentofalifesupportdeviceorsystemwhosefailuretoperformcanbereasonablyexpectedtocausethefailureofthelifesupportdeviceorsystem,ortoaffectitssafetyoreffectiveness.

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Tel:81-3-5639-7560Fax:81-3-5639-7507

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