REF30xx 50-ppm/°C Max, 50-μA, CMOS Voltage …

1 350300250200150100500 Dropout Voltage (mV)051015202530 Load Current (mA)5 !ADS7822 VCCCSDOUTDCLOCKVREF+In InGND++1 F to 10 F ""1 F to"10 F" F"VINV+VSMicrocontrollerREF3033 GNDC opyright 2016, Texas Instruments IncorporatedProductFolderOrderNowTechnic alDocumentsTools &SoftwareSupport &CommunityReferenceDesignAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand ,REF3020,REF3025,REF3030,REF3033,REF3040 SBVS032H MARCH2002 REVISEDFEBRUARY2018 REF30xx50-ppm/ C Max, 50- A, CMOSV oltageReferencein SOT-23-311 Features1 microSizePackage:SOT-23-3 Low Dropout:1 mV HighOutputCurrent:25 mA Low IQ: 42 A (Typical) ExcellentSpecifiedDrift Performance: 50 ppm/ C (Maximum)From0 C to 70 C 75 ppm/ C (Maximum)From 40 C to +125 C2 Applications Temperatureand PressureTransmitters Portable,Battery-PoweredEquipment DataAcquisitionSystems MedicalEquipment HandheldTestEquipment3 DescriptionThe REF30xxis a precision,low-power,low-dropoutvoltage,r eferencefamilyavailablein a tiny and initialaccuracywhileoperatingat a quiescentcurrentof 42 A (typical).

2 The low powerconsumptionand the relativelyhighprecisionmakethe REF30xxveryattractivefor loop-poweredindustrialapplicationssuchas REF30xxiseasyto use in intrinsicallysafeand explosion-proofapplicationsbecauseit doesnot requirea loadcapacitorto be REF30xxis specifiedoverthe extendedindustrialtemperaturerangeof 40 Cto +125 REF30xxoperateswith supplieswithin1 mV use the low dropout,smallsize,and low powerconsumptionof the REF30xxin portableand (NOM)REF30xxSOT-23(3) LoadCurrent2 REF3012,REF3020,REF3025,REF3030,REF3033, REF3040 SBVS032H MARCH2002 :REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporatedTableof Contents1 Pin Configurationand Applicationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (November2015)to RevisionHPage ChangedsectionheaderFrom:REF33xx(REF3312 ,REF3318,REF3320,REF3325,REF3330,REF3333 )To: REF30xx (REF3012,REF3020,REF3025,REF3 030,REF30333,REF3040)in Addedturnonsettlingtime TYPvalueof 120 s (deletedby mistakein the previousrevision).

3 6 AddedNOTEto theApplicationand (August2008)to RevisionGPage AddedDeviceInformation,ESDR atings,RecommendedOperatingConditions, AddedDetailedDescription,Applicationsand Implementation,Power-SupplyRecommendatio ns,Layout,Deviceand DocumentationSupport, andMechanical,Packaging,and Changedtext Deletedthermalresistanceparameterin ElectricalCharacteristics;see new MovedtemperatureparametersfromElectrical Characteristicsto to scale3 REF3012,REF3020,REF3025,REF3030,REF3033, MARCH2002 REVISEDFEBRUARY2018 ProductFolderLinks:REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporated5 DeviceComparisonTablePARTNUMBERVOLTAGE(V ) Pin Configurationand FunctionsDBZP ackage3-PinSOT-23 Top ViewPin Ground4 REF3012,REF3020,REF3025,REF3030,REF3033, REF3040 SBVS032H MARCH2002.

4 REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporated(1)Stre ssesbeyondthoselistedunderAbsoluteMaximu mRatingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions. Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)Shortcircuitt o (unlessotherwisenoted)(1)MINMAXUNITS upplyvoltage,V+ to V (2)ContinuousOperatingtemperature 40125 CJunctiontemperature150 CStoragetemperature,Tstg 65150 C(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.(2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a (ESD)ElectrostaticdischargeHuman-bodymod el(HBM),per ANSI/ESDA/JEDECJS-001(1) 4000 VCharged-devicemodel(CDM),per JEDEC specificationJESD22-C101(2) 1500(1)For IL> 0, seeTypicalCharacteristics.

5 Minimumsupplyvoltagefor REF3012is V . TA= 25 C, VIN= 5 V, and ILOAD= 0 mA (unlessotherwisenoted)MINNOMMAXUNITVINI nputvoltageVREF+ (1) 40125 C(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorand IC (1)REF30xxUNITDBZ(SOT-23)3 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bot)Junction-to-case(bottom)thermalre sistanceN/A C/W5 REF3012,REF3020,REF3025,REF3030,REF3033, MARCH2002 REVISEDFEBRUARY2018 ProductFolderLinks:REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporated(1)The minimumsupplyvoltagefor the REF3012is TA= 25 C, VIN= 5 V, and ILOAD= 0 mA (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNITREF3012( )(1) = Hz to 10 Hz14 VPPf = 10 Hz to 10 kHz42 VrmsLine V VIN V60190 V/VREF3020( ) = Hz to 10 Hz23 VPPf = 10 Hz to 10 kHz65 VrmsLine regulationVREF+ 50 mV VIN V110290 V/VREF3025( V) = Hz to 10 Hz28 VPPf = 10 Hz to 10 kHz80 VrmsLine regulationVREF+ 50 mV VIN V120325 V/VREF3030( V) = Hz to 10 Hz33 VPPf = 10 Hz to 10 kHz94 VrmsLine regulationVREF+ 50 mV VIN V120375 V/VREF3033( V) = Hz to 10 Hz36 VPPf = 10 Hz to 10 kHz105 VrmsLine regulationVREF+ 50 mV VIN V130400 V/VREF3040( )

6 = Hz to 10 Hz45 VPPf = 10 Hz to 10 kHz128 VrmsLine regulationVREF+ 50 mV VIN V160410 V/V6 REF3012,REF3020,REF3025,REF3030,REF3033, REF3040 SBVS032H MARCH2002 :REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporatedElectri calCharacteristics(continued)at TA= 25 C, VIN= 5 V, and ILOAD= 0 mA (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNIT(2)Box methodusedto determineovertemperaturedrift.(3)Typical valueof load regulationreflectsmeasurementsusinga forceand sensecontacts;seeLoadRegulationsection.( 4)Thermalhysteresisprocedureexplainedin (REF3012,REF3020,REF3025,REF3030,REF3033 3,REF3040)dVOUT/dTOutputvoltagetemperatu redrift(2)0 C TA 70 C2050ppm/ C 30 C TA +85 C2860 40 C TA +85 C3065 40 C TA +125 C3575 Long-termstability0000hto 1000h24ppm1000hto 2000h15 VO( IL)Loadregulation(3)0 mA < ILOAD< 25 mA, VIN= VREF+500 mV(1)3100 V/mAdTThermalhysteresis(4)25100ppmVIN VOUTD ropoutvoltage150mVISCS hort-circuitcurrent45mATurnonsettlingtim eTo CL= 1 F120 sPOWERSUPPLYIQQ uiescentcurrent4250 A 40 C TA +125 C596543210 Load Regulation ( V/mA)!

7 Temperature ( C)-40-200206040801001201406050403020100I ( A)!QTemperature ( C) Voltage (V)-40-20020604080100120140 Temperature ( C)3530252015105 Maximum Load Current (mA)-40-20020604080100120140 Temperature ( C)50454035302520151050 Number of Units510 15 20 25 30403545 50 556560 Drift (ppm/ C)1009080706050403020100 Number of Units510 15 20 25 30403545 50 556560 Drift (ppm/ C)7 REF3012,REF3020,REF3025,REF3030,REF3033, MARCH2002 REVISEDFEBRUARY2018 ProductFolderLinks:REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018, TA= 25 C, VIN= 5 V, and REF3025usedfor typicalcharacteristics(unlessotherwiseno ted)0 C to 70 CFigure1. TemperatureDrift 40 C to +125 CFigure2. TemperatureDriftFigure3. OutputVoltagevs TemperatureFigure4. MaximumLoadCurrentvs TemperatureFigure5.

8 LoadRegulationvs TemperatureFigure6. QuiescentCurrentvs Voltage (V) (V) Voltage (V)051015202530 Load Current (mA)9080706050403020100 PSRR (dB)1101001k10k100kFrequency (Hz) Voltage (V) (V)200150100500-50 Line Regulation ( V/V)!Temperature ( C) Impedance (dB)1101001k10k100kFrequency (Hz)8 REF3012,REF3020,REF3025,REF3030,REF3033, REF3040 SBVS032H MARCH2002 :REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporatedTypical Characteristics(continued)at TA= 25 C, VIN= 5 V, and REF3025usedfor typicalcharacteristics(unlessotherwiseno ted)Figure7. LineRegulationvs TemperatureFigure8. OutputImpedancevs FrequencyFigure9. Power-SupplyRejectionRatiovs FrequencyNo LoadFigure10. OutputVoltagevs SupplyVoltageILOAD= 25 mAFigure11. OutputVoltagevs SupplyVoltageFigure12.

9 OutputVoltagevs LoadCurrent10ms/div20 mV/divI = 5 mALVOUTI = 0 mAL40ms/div20 mV/divVOUTI = 0 mALI = 6 mAL10ms/div500 mV/div50 mV/divVINVOUT10ms/div20 mV/divI = 1 mALVOUTI = 0 mAL40ms/divVINVOUT3 V/div1 V/div10 s/divmVIN5 V/div1 V/divVOUT9 REF3012,REF3020,REF3025,REF3030,REF3033, MARCH2002 REVISEDFEBRUARY2018 ProductFolderLinks:REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporatedTypical Characteristics(continued)at TA= 25 C, VIN= 5 V, and REF3025usedfor typicalcharacteristics(unlessotherwiseno ted)CL= 0, 3-V startupFigure13. StepResponseCL= 0, 5-V startupFigure14. StepResponseFigure15. LineTransientResponseCL= 0 Figure16. 0-mAto 1-mALoadTransientCL= 0 Figure17. 0-mAto 5-mALoadTransientCL= 1 FFigure18. 1-mAto 6-mALoadTransientAbsolute Output Voltage Drift (ppm)0200400600800 1000 1200 1400 1600 1800 2000 Time (hours)807060504030201008070605040302010 0 Absolute Output Voltage Drift (ppm)0100200300400500600700800900 1000 Time (hours)Absolute Output Voltage Drift (ppm)1200 130016001800 1900 2000 Time (hours)807060504030201001000 11001400 15001700100 s/divm20 mV/divVOUTI = 1 mALI = 25 mAL10 s/div10 REF3012,REF3020,REF3025,REF3030,REF3033, REF3040 SBVS032H MARCH2002 :REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporatedTypical Characteristics(continued)at TA= 25 C, VIN= 5 V, and REF3025usedfor typicalcharacteristics(unlessotherwiseno ted)CL= 1 FFigure19.

10 1-mAto 25-mALoadTransientFigure20. 10-HzNoiseFigure21. Long-TermStability:0 to 1000 HoursFigure22. Long-TermStability:1000to 2000 HoursFigure23. Long-TermStability:0 to 2000 HoursR1Q2Q1+Vbe1+Vbe2 Copyright 2016, Texas Instruments Incorporated11 REF3012,REF3020,REF3025,REF3030,REF3033, MARCH2002 REVISEDFEBRUARY2018 ProductFolderLinks:REF3012 REF3020 REF3025 REF3030 REF3033 REF3040 SubmitDocumentationFeedbackCopyright 2002 2018,TexasInstrumentsIncorporated8 a series, cmos , basictopologyis shownin Q2are biasedso that the currentdensityof Q1is greaterthanthat of Q2. Thedifferenceof the two base-emittervoltages,Vbe1 Vbe2, has a positivetemperaturecoefficientand is forcedacrossresistorR1. Thisvoltageis gainedup and addedto the base-emittervoltageofQ2, whichhas a resultingoutputvoltageis virtuallyindependentof the bandgapvoltage,as shownin Figure3, is due to the slightlynonlineartemperaturecoefficiento fthe base-emittervoltageof referencesfeaturesan extremelylow exceptionof theREF3012,whichhas a minimumsupplyrequirementof V, the REF30xxcan be operatedwith a supplyofonly1 mV abovethe outputvoltagein an loadedconditions,a typicaldropoutvoltageversusload is shownon the REF30xxfeaturesa low quiescentcurrentthat is extremelystableoverchangesin typicalroomtemperaturequiescentcurrentis 42 A, and the maximumquiescentcurrentovertemperatureis just 59 A.