DAC0808
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DAC08088-BitD/AConverterGeneralDescriptionTheDAC0808isan8-bitmonolithicdigital-to-analogcon-verter(DAC)featuringafullscaleoutputcurrentsettlingtimeof150nswhiledissipatingonly33mWwith±5Vsupplies.Noreferencecurrent(IREF)trimmingisrequiredformostapplicationssincethefullscaleoutputcurrentistypically±1LSBof255IREF/256.Relativeaccuraciesofbetterthan±0.19%assure8-bitmonotonicityandlinearitywhilezeroleveloutputcurrentoflessthan4µAprovides8-bitzeroaccuracyforIREF≥2mA.ThepowersupplycurrentsoftheDAC0808isindependentofbitcodes,andexhibitsessen-tiallyconstantdevicecharacteristicsovertheentiresupplyvoltagerange.TheDAC0808willinterfacedirectlywithpopularTTL,DTLorCMOSlogiclevels,andisadirectreplacementfortheMC1508/MC1408.Forhigherspeedapplications,seeDAC0800datasheet.FeaturesnRelativeaccuracy:±0.19%errormaximumnFullscalecurrentmatch:±1LSBtyp
nFastsettlingtime:150nstypnNoninvertingdigitalinputsareTTLandCMOScompatiblenHighspeedmultiplyinginputslewrate:8mA/µsnPowersupplyvoltagerange:±4.5Vto±18V
nLowpowerconsumption:33mW@
±5V
BlockandConnectionDiagrams
DS005687-1Dual-In-LinePackage
DS005687-2TopViewOrderNumberDAC0808SeeNSPackageM16AorN16A
May1999DAC08088-BitD/AConverter
©2001NationalSemiconductorCorporationDS005687www.national.comBlockandConnectionDiagrams(Continued)
OrderingInformationACCURACYOPERATINGTEMPERATURERANGENPACKAGE(N16A)(Note1)SOPACKAGE(M16A)8-bit0˚C≤TA≤+75˚CDAC0808LCNMC1408P8DAC0808LCM
Note1:Devicesmaybeorderedbyusingeitherordernumber.
Small-OutlinePackageDS005687-13D
AC0808
www.national.com2AbsoluteMaximumRatings(Note2)
IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheNationalSemiconductorSalesOffice/Distributorsforavailabilityandspecifications.
PowerSupplyVoltageVCC+18VDC
VEE−18VDC
DigitalInputVoltage,V5–V12−10VDCto+18VDC
AppliedOutputVoltage,VO−11VDCto+18VDC
ReferenceCurrent,I145mA
ReferenceAmplifierInputs,V14,V15VCC,VEE
PowerDissipation(Note4)1000mW
ESDSusceptibility(Note5)TBD
StorageTemperatureRange−65˚Cto+150˚CLeadTemp.(Soldering,10seconds)Dual-In-LinePackage(Plastic)260˚CDual-In-LinePackage(Ceramic)300˚CSurfaceMountPackageVaporPhase(60seconds)215˚CInfrared(15seconds)220˚C
OperatingRatingsTemperatureRangeTMIN≤TA≤TMAX
DAC08080≤TA≤+75˚C
ElectricalCharacteristics(VCC=5V,VEE=−15VDC,VREF/R14=2mA,andalldigitalinputsathighlogiclevelunlessotherwisenoted.)SymbolParameterConditionsMinTypMaxUnitsErRelativeAccuracy(ErrorRelative(Figure4)%
toFullScaleIO)
DAC0808LC(LM1408-8)±0.19%
SettlingTimetoWithin1⁄2LSBTA=25˚C(Note7),150ns
(IncludestPLH)(Figure5)
tPLH,tPHLPropagationDelayTimeTA=25˚C,(Figure5)30100ns
TCIOOutputFullScaleCurrentDrift±20ppm/˚C
MSBDigitalInputLogicLevels(Figure3)
VIHHighLevel,Logic“1”2VDC
VILLowLevel,Logic“0”0.8VDC
MSBDigitalInputCurrent(Figure3)
HighLevelVIH=5V00.040mA
LowLevelVIL=0.8V−0.003−0.8mA
I15ReferenceInputBiasCurrent(Figure3)−1−3µA
OutputCurrentRange(Figure3)
VEE=−5V02.02.1mA
VEE=−15V,TA=25˚C02.04.2mA
IOOutputCurrentVREF=2.000V,
R14=1000Ω,(Figure3)1.91.992.1mA
OutputCurrent,AllBitsLow(Figure3)04µA
OutputVoltageCompliance(Note3)Er≤0.19%,TA=25˚C
VEE=−5V,IREF=1mA−0.55,+0.4VDC
VEEBelow−10V−5.0,+0.4VDC
SRIREFReferenceCurrentSlewRate(Figure6)48mA/µs
OutputCurrentPowerSupply−5V≤VEE≤−16.5V0.052.7µA/V
SensitivityPowerSupplyCurrent(AllBits(Figure3)
Low)ICC2.322mA
IEE−4.3−13mA
PowerSupplyVoltageRangeTA=25˚C,(Figure3)
VCC4.55.05.5VDC
VEE−4.5−15−16.5VDC
PowerDissipation
DAC0808www.national.com3ElectricalCharacteristics(Continued)
(VCC=5V,VEE=−15VDC,VREF/R14=2mA,andalldigitalinputsathighlogiclevelunlessotherwisenoted.)SymbolParameterConditionsMinTypMaxUnitsAllBitsLowVCC=5V,VEE=−5V33170mW
VCC=5V,VEE=−15V106305mW
AllBitsHighVCC=15V,VEE=−5V90mW
VCC=15V,VEE=−15V160mW
Note2:AbsoluteMaximumRatingsindicatelimitsbeyondwhichdamagetothedevicemayoccur.DCandACelectricalspecificationsdonotapplywhenoperatingthedevicebeyonditsspecifiedoperatingconditions.
Note3:Rangecontrolisnotrequired.Note4:ThemaximumpowerdissipationmustbederatedatelevatedtemperaturesandisdictatedbyTJMAX,θJA,andtheambienttemperature,TA.Themaximum
allowablepowerdissipationatanytemperatureisPD=(TJMAX−TA)/θJAorthenumbergivenintheAbsoluteMaixmumRatings,whicheverislower.Forthisdevice,
TJMAX=125˚C,andthetypicaljunction-to-ambientthermalresistanceofthedual-in-lineJpackagewhentheboardmountedis100˚C/W.Forthedual-in-lineN
package,thisnumberincreasesto175˚C/WandforthesmalloutlineMpackagethisnumberis100˚C/W.
Note5:Humanbodymodel,100pFdischargedthrougha1.5kΩresistor.Note6:Allcurrentswitchesaretestedtoguaranteeatleast50%ofratedcurrent.Note7:Allbitsswitched.Note8:Pin-outnumbersfortheDAL080Xrepresentthedual-in-linepackage.Thesmalloutlinepackagepinoutdiffersfromthedual-in-linepackage.
