电压基准LM1992993993999英文手册解析.docx
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电压基准LM1992993993999英文手册解析.docx
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电压基准LM1992993993999英文手册解析
TLH5717
LM199LM299LM399LM3999PrecisionReference
December1994
LM199LM299LM399LM3999PrecisionReference
GeneralDescription
TheLM199seriesareprecisiontemperature-stabilizedmonolithiczenersofferingtemperaturecoefficientsafactoroftenbetterthanhighqualityreferencezenersConstruct-edonasinglemonolithicchipisatemperaturestabilizercircuitandanactivereferencezenerTheactivecircuitryreducesthedynamicimpedanceofthezenertoabout05Xandallowsthezenertooperateover05mAto10mAcur-rentrangewithessentiallynochangeinvoltageortempera-turecoefficientFurtheranewsubsurfacezenerstructuregiveslownoiseandexcellentlongtermstabilitycomparedtoordinarymonolithiczenersThepackageissuppliedwithathermalshieldtominimizeheaterpowerandimprovetem-peratureregulation
TheLM199seriesreferencesareexceptionallyeasytouseandfreeoftheproblemsthatareoftenexperiencedwithordinaryzenersThereisvirtuallynohysteresisinreferencevoltagewithtemperaturecyclingAlsotheLM199isfreeofvoltageshiftsduetostressontheleadsFinallysincetheunitistemperaturestabilizedwarmuptimeisfast
TheLM199canbeusedinalmostanyapplicationinplaceofordinaryzenerswithimprovedperformanceSomeidealapplicationsareanalogtodigitalconverterscalibrationstandardsprecisionvoltageorcurrentsourcesorprecisionpowersuppliesFurtherinmanycasestheLM199canre-placereferencesinexistingequipmentwithaminimumofwiringchanges
TheLM199seriesdevicesarepackagedinastandardher-meticTO-46packageinsideathermalshieldTheLM199isratedforoperationfromb55Ctoa125CwhiletheLM299isratedforoperationfromb25Ctoa85CandtheLM399isratedfrom0Ctoa70C
TheLM3999ispackagedinastandardTO-92packageandisratedfrom0Ctoa70C
Features
YGuaranteed00001%CtemperaturecoefficientYLowdynamicimpedance05X
YInitialtoleranceonbreakdownvoltage2%YSharpbreakdownat400mA
YWideoperatingcurrent500mAto10mAYWidesupplyrangefortemperaturestabilizerYGuaranteedlownoise
YLowpowerforstabilization300mWat25CYLongtermstability20ppm
Y
Provenreliabilitylow-stresspackaginginTO-46inte-grated-circuithermeticpackageforlowhysteresisafterthermalcycling33millionhoursMTBFatTAea25C(TJea86C
YCertifiedlongtermstabilityavailableY
MIL-STD-883compliant
ConnectionDiagrams
MetalCanPackage(TO-46
TLH5717–14
TopView
LM199LM299LM399(SeeTableonfourthpage
NSPackageNumberH04D
PlasticPackageTO-92
TLH5717–10
BottomView
LM3999(SeeTableonfourthpage
NSPackageNumberZ03A
FunctionalBlockDiagrams
LM199LM299LM399
TLH5717–15
LM3999
TLH5717–11
C1995NationalSemiconductorCorporation
RRD-B30M115PrintedinUSA
AbsoluteMaximumRatings
SpecificationsforMilitaryAerospaceproductsarenotcontainedinthisdatasheetRefertothefollowingReli-abilityElectricalTestSpecificationsdocumentsRETS199XforLM199RETS199AXforLM199ATemperatureStabilizerVoltageLM199LM299LM39940VLM399936VReverseBreakdownCurrent20mAForwardCurrent
LM199LM299LM3991mA
LM3999
b01mA
ReferencetoSubstrateVoltageV(RS(Note140V
b01V
OperatingTemperatureRangeLM199b55Ctoa125CLM299
b25Ctoa85CLM399LM3999
b0Ctoa70CStorageTemperatureRangeb55Ctoa150C
SolderingInformation
TO-92package(10seca260CTO-46package(10sec
a300C
ElectricalCharacteristics(Notes25
Parameter
Conditions
LM199HLM299HLM399HUnitsMinTypMaxMinTypMaxReverseBreakdownVoltage05mAsIRs10mA68
6957166
69573VReverseBreakdownVoltage05mAsIRs10mA69612mVChangewithCurrentReverseDynamicImpedanceIRe1mA
05
105
15
XReverseBreakdownb55CsTAsa85CLM19900000300001%CTemperatureCoefficient
a85CsTAsa125C(
0000500015%Cb25CsTAs85CLM299000003
00001
%C0CsTAsa70C
LM399
000003
00002%CRMSNoise10Hzsfs10kHz
720
750
mVLongTermStabilityStabilized22CsTAs28C2020
ppm
1000HoursIRe1mAg01%TemperatureStabilizerTAe25CStillAirVSe30V851485
15
mASupplyCurrentTAeb55C
22
28TemperatureStabilizer9
40
9
40
VSupplyVoltage
Warm-UpTimeto005%VSe30VTAe25C
33sec
InitialTurn-onCurrent
9sVSs40TAea25C(Note3
140
200
140200
mA
ElectricalCharacteristics(Note2
Parameter
Conditions
LM3999Z
UnitsMinTypMaxReverseBreakdownVoltage06mAsIRs10mA66
69573VReverseBreakdownVoltage06mAsIRs10mA620mVChangewithCurrentReverseDynamicImpedanceIRe1mA0622XReverseBreakdown0CsTAs70C0000200005
%CTemperatureCoefficientRMSNoise10Hzsfs10kHz
7mVLongTermStabilityStabilized22CsTAs28C20ppm1000HoursIRe1mAg01%TemperatureStabilizerTAe25CStillAirVSe30V
12
18mATemperatureStabilizer36VSupplyVoltage
Warm-UpTimeto005%VSe30VTAe25C5secInitialTurn-OnCurrent
9sVSs40TAe25C
140
200
mA
2
ElectricalCharacteristics(Notes25
Parameter
Conditions
LM199AHLM299AHLM399AHUnitsMinTypMaxMinTypMaxReverseBreakdownVoltage05mAsIRs10mA68
6957166
69573VReverseBreakdownVoltage05mAsIRs10mA69612mVChangewithCurrentReverseDynamicImpedanceIRe1mA
05
105
15
XReverseBreakdownb55CsTAsa85CLM199A000002000005%CTemperatureCoefficient
a85CsTAsa125C(
0000500010%Cb25CsTAs85CLM299A000002
000005
%C0CsTAsa70C
LM399A
000003
00001%CRMSNoise10Hzsfs10kHz
720
750
mVLongTermStabilityStabilized22CsTAs28C2020
ppm
1000HoursIRe1mAg01%TemperatureStabilizerTAe25CStillAirVSe30V851485
15
mASupplyCurrentTAeb55C
22
28TemperatureStabilizer9
40
9
40
VSupplyVoltage
Warm-UpTimeto005%VSe30VTAe25C
33sec
InitialTurn-onCurrent
9sVSs40TAea25C(Note3
140
200
140200
mA
ElectricalCharacteristics(Notes25
Parameter
Conditions
LM199AH-20LM299AH-20LM399AH-50Units
MinTypMaxMinTypMaxReverseBreakdownVoltage05mAsIRs10mA68
6957166
69573VReverseBreakdownVoltage05mAsIRs10mA
69612mVChangeWithCurrent
ReverseDynamicImpedanceIRe1mA05
105
15
XReverseBreakdownb55CsTAs85
LM199A
000002000005%CTemperatureCoefficient
85CsTAs125C
(
0000500010%Cb25CsTAs85CLM299A000002
000005%C
0CsTAs70CLM399A00000300001%C
RMSNoise10Hzsfs10kHz
720750mVLongTermStabilityStabilized22CsTAs28C820950ppm1000HoursIRe1mAg01%TemperatureStabilizerTAe25CStillAirVSe30V851485
15
mASupplyCurrentTAe55C
22
28TemperatureStabilizer9
40
9
40
VSupplyVoltage
Warm-UpTimeto005%VSe30VTAe25C
33sInitialTurn-onCurrent
9sVSs40TAe25C(Note3
140
200
140
200
mA
Note1ThesubstrateiselectricallyconnectedtothenegativeterminalofthetemperaturestabilizerThevoltagethatcanbeappliedtoeitherterminalofthereferenceis40Vmorepositiveor01Vmorenegativethanthesubstrate
Note2Thesespecificationsapplyfor30Vappliedtothetemperaturestabilizerandb55CsTAsa125CfortheLM199b25CsTAsa85CfortheLM299and0CsTAsa70CfortheLM399andLM3999
Note3ThisinitialcurrentcanbereducedbyaddinganappropriateresistorandcapacitortotheheatercircuitSeetheperformancecharacteristicgraphstodeterminevalues
Note4DonotwashtheLM199withitspolysulfonethermalshieldinTCE
Note5AmilitaryRETSelectricaltestspecificationisavailablefortheLM199H883LM199AH883andLM199AH-20883onrequest
3
OrderingInformation
Initial0Ctoa70C
b25Ctoa85C
b55Ctoa125C
NSTolerance
Package2%LM299AHLM199AHLM199AH883H04D5%LM399HLM299H
LM199HLM199H883
H04DLM399AH5%
LM3999ZZ03AGuaranteedLongLM399AH-50
LM299AH-20
LM199AH-20LM199AH-20883
H04D
TermStability
CertifiedLongTermDrift
TheNationalSemiconductorLM199AH-20LM299AH-20andLM399AH-50areultra-stableZenerreferencesspecial-lyselectedfromtheproductionrunsofLM199AHLM299AHLM399AHandtestedtoconfirmalong-termsta-bilityof2020or50ppmper1000hoursrespectivelyThedevicesaremeasuredevery168hoursandthevoltageofeachdeviceisloggedandcomparedinsuchawayastoshowthedeviationfromitsinitialvalueEachmeasurementistakenwithaprobable-worst-casedeviationofg2ppmcomparedtotheReferenceVoltagewhichisderivedfromseveralgroupsofNBS-traceablereferencessuchasLM199AH-20’s1N827’sandsaturatedstandardcellsso
thatthedeviationofanyonegroupwillnotcausefalseindi-cationsIndeedthiscomparisonprocesshasrecentlybeenautomatedusingaspeciallypreparedcomputerprogramwhichiscustom-designedtorejectnoisydata(andrequirearepeatreadingandtorecordtheaverageofthebest5of7readingsjustasasagaciousstandardsengineerwillrejectunbelievablereadings
ThetypicalcharacteristicfortheLM199AH-20isshownbe-lowThiscomputerizedprint-outformofeachreference’sstabilityisshippedwiththeunit
TypicalCharacteristics
NationalSemiconductorCertifiedLongTermDrift
LM199AH-20HrsDrift
Part6849
168b20Limits
336b24LM199AH-20140mV504b36LM299AH-20140mV672b34LM399AH-20
350mV
840b401008
b36
TestingConditionsHeaterVoltage30VZenerCurrent1mAAmbientTemp25C
TLH5717–12
4
TypicalPerformanceCharacteristics
ReverseCharacteristics
ReverseVoltageChange
DynamicImpedance
ZenerNoiseVoltageStabilizationTimeHeaterCurrent
InitialHeaterCurrent
HeaterCurrent(ToLimitThisSurgeSeeNextGraph
HeaterSurgeLimitResistorvsMinim
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