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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 LM6142/LM614417MHzRail-to-RailInput-OutputOperationalAmplifiers Check forSamples: LM6142 ,LM6144 1FEATURES DESCRIPTION Using patent pending new circuittopologies,the2At VS = 5V.Typ Unless Noted. LM6142/LM6144 providesnew levelsofperformance• Rail-to-railInputCMVR −0.25Vto5.25V inapplicationswhere low voltagesuppliesor power

  • Rail-to-RailOutput Swing 0.005Vto4.995V limitationspreviouslymade compromise necessary. Operatingon suppliesof 1.8V to over 24V, the• Wide Gain-Bandwidth:17MHz at50kHz (typ) LM6142/LM6144 is an excellentchoice forbattery• Slew Rate: operated systems, portable instrumentationand – Small Signal,5V/μs others. – Large Signal,30V/μs The greaterthan rail-to-railinput voltage range
  • Low Supply Current650μA/Amplifier eliminatesconcern over exceeding the common- mode voltagerange. The rail-to-railoutput swing• Wide Supply Range 1.8Vto24V providesthemaximum possibledynamic rangeatthe• CMRR 107dB output.Thisisparticularlyimportantwhen operating
  • Gain 108dB withR L = 10k on lowsupplyvoltages.
  • PSRR 87dB High gain-bandwidthwith 650μA/Amplifiersupply currentopens new batterypowered applications APPLICATIONS where previoushigherpower consumptionreduced batterylifetounacceptablelevels.The abilitytodrive• BatteryOperated Instrumentation largecapacitiveloadswithoutoscillatingfunctionally• Depth Sounders/FishFinders removes thiscommon problem.
  • Barcode Scanners
  • WirelessCommunications
  • Rail-to-Railin-outInstrumentationAmps Connection Diagrams Figure1.8-PinCDIP Figure2.8-PinPDIP/SOIC Top View Top View Figure3.14-PinPDIP/SOIC Top View Pleasebe aware thatan importantnoticeconcerningavailability,standardwarranty,and use incriticalapplicationsof Texas Instrumentssemiconductorproductsand disclaimerstheretoappearsattheend ofthisdatasheet. 2Alltrademarksarethepropertyoftheirrespectiveowners. PRODUCTION DATA informationiscurrentas ofpublicationdate. Copyright© 2000–2013,Texas InstrumentsIncorporatedProductsconform to specificationsper the terms of the Texas Instrumentsstandardwarranty.Productionprocessingdoes not necessarilyincludetestingofallparameters.

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com These deviceshave limitedbuilt-inESD protection.The leadsshouldbe shortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamage totheMOS gates. AbsoluteMaximum Ratings(1)(2) ESD Tolerance(3) 2500V DifferentialInputVoltage 15V VoltageatInput/OutputPin (V+)+ 0.3V,(V−)− 0.3V SupplyVoltage(V+ − V−) 35V CurrentatInputPin ±10mA CurrentatOutputPin(4) ±25mA CurrentatPower SupplyPin 50mA Lead Temperature(soldering,10 sec) 260°C StorageTemp. Range −65°C to+150°C JunctionTemperature(5) 150°C (1) AbsoluteMaximum Ratingsindicatelimitsbeyond whichdamage tothedevicemay occur.OperatingRatingsindicateconditionsfor whichthedeviceisintendedtobe functional,butspecificperformanceisnotguaranteed.Forguaranteedspecificationsand thetest conditions,see theElectricalCharacteristics. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexas InstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Human body model,1.5kΩ inserieswith100pF. (4) Appliestobothsingle-supplyand split-supplyoperation.Continuousshortcircuitoperationatelevatedambienttemperaturecan resultin exceedingthemaximum allowedjunctiontemperatureof150°C. (5) The maximum power dissipationisa functionofTJ(MAX),θJA,and TA.The maximum allowablepower dissipationatany ambient temperatureisPD = (TJ(MAX) − TA)/θJA.Allnumbers applyforpackagessoldereddirectlyintoa PC board. OperatingRatings(1) SupplyVoltage 1.8V≤ V+ ≤ 24V TemperatureRange LM6142, LM6144 −40°C ≤ TA ≤ +85°C ThermalResistance(θJA) P Package,8-PinPDIP 115°C/W D Package,8-PinSOIC 193°C/W D Package,14-PinSOIC 126°C/W (1) AbsoluteMaximum Ratingsindicatelimitsbeyond whichdamage tothedevicemay occur.OperatingRatingsindicateconditionsfor whichthedeviceisintendedtobe functional,butspecificperformanceisnotguaranteed.Forguaranteedspecificationsand thetest conditions,see theElectricalCharacteristics. 5.0VDC ElectricalCharacteristics(1) Unlessotherwisespecified,alllimitsguaranteedforTA = 25°C, V+ = 5.0V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextremes. Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) VOS InputOffsetVoltage 0.3 1.0 2.5 mV 2.2 3.3 max TCV OS InputOffsetVoltage 3 μV/°C AverageDrift IB InputBiasCurrent 170 250 300 nA max0V ≤ VCM ≤ 5V 180 280 526 526 (1) ElectricalTablevaluesapplyonlyforfactorytestingconditionsatthetemperatureindicated.Factorytestingconditionsresultinvery limitedself-heatingofthedevicesuch thatTJ = TA.No guaranteeofparametricperformanceisindicatedintheelectricaltablesunder conditionsoftheinternalselfheatingwhere TJ > TA. (2) Typicalvaluesrepresentthemost likelyparametricnorm. (3) Alllimitsareguaranteedby testingorstatisticalanalysis.

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 5.0VDC ElectricalCharacteristics(1)(continued) Unlessotherwisespecified,alllimitsguaranteedforTA = 25°C, V+ = 5.0V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextremes. Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) IOS InputOffsetCurrent 3 30 30 nA 80 80 max R IN InputResistance,C M 126 M Ω CMRR Common Mode 0V ≤ VCM ≤ 4V 107 84 84 RejectionRatio 78 78 0V ≤ VCM ≤ 5V 82 66 66 dB min79 64 64 PSRR Power Supply 5V ≤ V+ ≤ 24V 87 80 80 RejectionRatio 78 78 VCM InputCommon-Mode −0.25 0 0 V VoltageRange 5.25 5.0 5.0 AV LargeSignal R L = 10k 270 100 80 V/mV VoltageGain 70 33 25 min VO OutputSwing R L = 100k 0.005 0.01 0.01 V 0.013 0.013 max 4.995 4.98 4.98 V 4.93 4.93 min R L = 10k 0.02 V max

4.97 V min

R L = 2k 0.06 0.1 0.1 V 0.133 0.133 max 4.90 4.86 4.86 V 4.80 4.80 min ISC OutputShort Sourcing 13 10 8 mA CircuitCurrent 4.9 4 minLM6142 35 35 mA max Sinking 24 10 10 mA 5.3 5.3 min 35 35 mA max ISC OutputShort Sourcing 8 6 6 mA CircuitCurrent 3 3 minLM6144 35 35 mA max Sinking 22 8 8 mA 4 4 min 35 35 mA max IS SupplyCurrent Per Amplifier 650 800 800 μA 880 880 max Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com 5.0VAC ElectricalCharacteristics(1) UnlessOtherwiseSpecified,AllLimitsGuaranteedforTA = 25°C, V+ = 5.0V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextremes. Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) SR Slew Rate 8 VPP @ V+ 12V 25 15 13 V/μs R S > 1 kΩ 13 11 min GBW Gain-BandwidthProduct f= 50 kHz 17 10 10 MHz 6 6 min φm Phase Margin 38 Deg Amp-to-Amp Isolation 130 dB en Input-Referred f= 1 kHz nV16VoltageNoise √Hz in Input-Referred f= 1 kHz pA0.22CurrentNoise √Hz T.H.D. TotalHarmonicDistortion f= 10 kHz,R L = 10 kΩ, 0.003 % (1) ElectricalTablevaluesapplyonlyforfactorytestingconditionsatthetemperatureindicated.Factorytestingconditionsresultinvery limitedself-heatingofthedevicesuch thatTJ = TA.No guaranteeofparametricperformanceisindicatedintheelectricaltablesunder conditionsoftheinternalselfheatingwhere TJ > TA. (2) Typicalvaluesrepresentthemost likelyparametricnorm. (3) Alllimitsareguaranteedby testingorstatisticalanalysis. 2.7VDC ElectricalCharacteristics(1) UnlessOtherwiseSpecified,AllLimitsGuaranteedforTA = 25°C, V+ = 2.7V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextreme Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) VOS InputOffsetVoltage 0.4 1.8 2.5 mV 4.3 5 max IB InputBiasCurrent 150 250 300 nA 526 526 max IOS InputOffsetCurrent 4 30 30 nA 80 80 max R IN InputResistance 128 M Ω CMRR Common Mode 0V ≤ VCM ≤ 1.8V 90 dB RejectionRatio min0V ≤ VCM ≤ 2.7V 76 PSRR Power Supply 3V ≤ V+ ≤ 5V 79 RejectionRatio VCM InputCommon-Mode −0.25 0 0 V min VoltageRange 2.95 2.7 2.7 V max AV LargeSignal R L = 10k 55 V/mV VoltageGain min VO OutputSwing R L = 100kΩ 0.019 0.08 0.08 V 0.112 0.112 max 2.67 2.66 2.66 V 2.25 2.25 min (1) ElectricalTablevaluesapplyonlyforfactorytestingconditionsatthetemperatureindicated.Factorytestingconditionsresultinvery limitedself-heatingofthedevicesuch thatTJ = TA.No guaranteeofparametricperformanceisindicatedintheelectricaltablesunder conditionsoftheinternalselfheatingwhere TJ > TA. (2) Typicalvaluesrepresentthemost likelyparametricnorm. (3) Alllimitsareguaranteedby testingorstatisticalanalysis.

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 2.7VDC ElectricalCharacteristics(1)(continued) UnlessOtherwiseSpecified,AllLimitsGuaranteedforTA = 25°C, V+ = 2.7V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextreme Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) IS SupplyCurrent Per Amplifier 510 800 800 μA 880 880 max 2.7VAC ElectricalCharacteristics(1) UnlessOtherwiseSpecified,AllLimitsGuaranteedforTA = 25°C, V+ = 2.7V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextreme Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) GBW Gain-BandwidthProduct f= 50 kHz 9 MHz φm Phase Margin 36 Deg G m Gain Margin 6 dB (1) ElectricalTablevaluesapplyonlyforfactorytestingconditionsatthetemperatureindicated.Factorytestingconditionsresultinvery limitedself-heatingofthedevicesuch thatTJ = TA.No guaranteeofparametricperformanceisindicatedintheelectricaltablesunder conditionsoftheinternalselfheatingwhere TJ > TA. (2) Typicalvaluesrepresentthemost likelyparametricnorm. (3) Alllimitsareguaranteedby testingorstatisticalanalysis. 24V ElectricalCharacteristics(1) UnlessOtherwiseSpecified,AllLimitsGuaranteedforTA = 25°C, V+ = 24V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextreme Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) VOS InputOffsetVoltage 1.3 2 3.8 mV 4.8 4.8 max IB InputBiasCurrent 174 nA max IOS InputOffsetCurrent 5 nA max R IN InputResistance 288 M Ω CMRR Common Mode 0V ≤ VCM ≤ 23V 114 dB RejectionRatio min0V ≤ VCM ≤ 24V 100 PSRR Power Supply 0V ≤ VCM ≤ 24V 87 RejectionRatio VCM InputCommon-Mode −0.25 0 0 V min VoltageRange 24.25 24 24 V max AV LargeSignal R L = 10k 500 V/mV VoltageGain min VO OutputSwing R L = 10 kΩ 0.07 0.15 0.15 V 0.185 0.185 max 23.85 23.81 23.81 V 23.62 23.62 min (1) ElectricalTablevaluesapplyonlyforfactorytestingconditionsatthetemperatureindicated.Factorytestingconditionsresultinvery limitedself-heatingofthedevicesuch thatTJ = TA.No guaranteeofparametricperformanceisindicatedintheelectricaltablesunder conditionsoftheinternalselfheatingwhere TJ > TA. (2) Typicalvaluesrepresentthemost likelyparametricnorm. (3) Alllimitsareguaranteedby testingorstatisticalanalysis. Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com 24V ElectricalCharacteristics(1)(continued) UnlessOtherwiseSpecified,AllLimitsGuaranteedforTA = 25°C, V+ = 24V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω toV+/2. Boldfacelimitsapplyatthetemperatureextreme Symbol Parameter Conditions Typ (2) LM6144AI LM6144BI Units LM6142AI LM6142BI Limit(3) Limit(3) IS SupplyCurrent Per Amplifier 750 1100 1100 μA 1150 1150 max GBW Gain-BandwidthProduct f= 50 kHz 18 MHz

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 TypicalPerformance Characteristics TA = 25°C, R L = 10 kΩ UnlessOtherwiseSpecified Supply Currentvs.Supply Voltage OffsetVoltagevs.Supply Voltage Figure4. Figure5. Bias Currentvs.Supply Voltage OffsetVoltagevs.VCM Figure6. Figure7. OffsetVoltagevs.VCM OffsetVoltagevs.VCM Figure8. Figure9. Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com TypicalPerformance Characteristics(continued) TA = 25°C, R L = 10 kΩ UnlessOtherwiseSpecified Bias Currentvs.VCM Bias Currentvs.VCM Figure10. Figure11. Bias Currentvs.VCM Open-Loop TransferFunction Figure12. Figure13. Open-Loop TransferFunction Open-Loop TransferFunction Figure14. Figure15.

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 TypicalPerformance Characteristics(continued) TA = 25°C, R L = 10 kΩ UnlessOtherwiseSpecified Output Voltagevs.Source Current Output Voltagevs.Source Current Figure16. Figure17. Output Voltagevs.Source Current Output Voltagevs.Sink Current Figure18. Figure19. Output Voltagevs.Sink Current Output Voltagevs.Sink Current Figure20. Figure21. Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com TypicalPerformance Characteristics(continued) TA = 25°C, R L = 10 kΩ UnlessOtherwiseSpecified Gain and Phase vs.Load Gain and Phase vs.Load Figure22. Figure23. Distortion+ Noise vs.Frequency GBW vs.Supply Figure24. Figure25. Open Loop Gain vs.Load, 3V Supply Open Loop Gain vs.Load, 5V Supply Figure26. Figure27.

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 TypicalPerformance Characteristics(continued) TA = 25°C, R L = 10 kΩ UnlessOtherwiseSpecified Open Loop Gain vs.Load, 24V Supply UnityGain Frequency vs.VS Figure28. Figure29. CMRR vs.Frequency Crosstalkvs.Frequency Figure30. Figure31. PSRR vs.Frequency Noise Voltagevs.Frequency Figure32. Figure33. Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com TypicalPerformance Characteristics(continued) TA = 25°C, R L = 10 kΩ UnlessOtherwiseSpecified Noise Currentvs.Frequency NF vs.R Source Figure34. Figure35.

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 LM6142/LM6144 APPLICATION IDEAS The LM6142 bringsa new levelofease ofuse toop amp systemdesign. With greaterthan rail-to-railinputvoltagerange concernover exceedingthe common-mode voltagerange is eliminated. Rail-to-railoutputswing providesthe maximum possibledynamic range at the output.This is particularly importantwhen operatingon lowsupplyvoltages. The highgain-bandwidthwithlow supplycurrentopens new batterypowered applications,where highpower consumption,previouslyreducedbatterylifetounacceptablelevels. To takeadvantageofthesefeatures,some ideasshouldbe keptinmind. ENHANCED SLEW RATE Unlikemost bipolarop amps, theuniquephase reversalprevention/speed-upcircuitintheinputstagecausesthe slewratetobe verymuch a functionoftheinputsignalamplitude. Figure36 shows how excess inputsignal,isroutedaround the inputcollector-basejunctions,directlyto the currentmirrors. The LM6142/LM6144 inputstageconvertsthe inputvoltagechange to a currentchange.Thiscurrentchange drivesthecurrentmirrorsthroughthecollectorsofQ1 –Q2, Q3 –Q4 when theinputlevelsarenormal. Figure36. Iftheinputsignalexceeds theslew rateoftheinputstage,thedifferentialinputvoltagerisesabove two diode drops.Thisexcesssignalbypassesthenormalinputtransistors,(Q1–Q4),and isroutedincorrectphase through thetwo additionaltransistors,(Q5,Q6),directlyintothecurrentmirrors. Thisreroutingofexcesssignalallowstheslew-ratetoincreaseby a factorof10 to1 ormore.(See Figure37.) As theoverdriveincreases,theop amp reactsbetterthana conventionalop amp. Largefastpulseswillraisethe slew-ratetoaround30V to60V/μs. Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com Figure37. Slew Rate vs.Δ VIN VS = ±5V Thiseffectismost noticeableathighersupplyvoltagesand lowergainswhere incomingsignalsarelikelytobe large. Thisnew inputcircuitalsoeliminatesthephase reversalseen inmany op amps when theyareoverdriven. Thisspeed-upactionadds stabilitytothesystemwhen drivinglargecapacitiveloads. DRIVING CAPACITIVE LOADS Capacitiveloadsdecreasethe phase margin of allop amps. Thisiscaused by the outputresistanceof the amplifierand theloadcapacitanceformingan R-C phase lagnetwork.Thiscan leadtoovershoot,ringingand oscillation.Slew ratelimitingcan alsocause additionallag.Most op amps witha fixedmaximum slew-ratewilllag furtherand furtherbehindwhen drivingcapacitiveloadseven thoughthedifferentialinputvoltageraises.Withthe LM6142, the lagcauses the slew rateto raise.The increasedslew-ratekeeps the outputfollowingthe input much better.Thiseffectivelyreducesphase lag.Afterthe outputhas caughtup withthe input,the differential inputvoltagedropsdown and theamplifiersettlesrapidly. These featuresallowtheLM6142 todrivecapacitiveloadsas largeas 1000pF atunitygainand notoscillate. The scope photos(Figure38 and Figure39) above show theLM6142 drivinga l000pFload.InFigure38,the uppertraceiswithno capacitiveloadand thelowertraceiswitha 1000pF load.Here we areoperatingon ±12V supplieswitha 20 VPP pulse.Excellentresponseisobtainedwitha C f ofl0pF.InFigure39,thesupplieshave been reducedto±2.5V,thepulseis4 VPP and C f is39pF.The bestvalueforthecompensationcapacitorisbest establishedaftertheboardlayoutisfinishedbecause thevalueisdependenton boardstraycapacity,thevalue ofthefeedbackresistor,theclosedloopgainand,tosome extent,thesupplyvoltage. Anothereffectthatiscommon toallop amps isthephase shiftcaused by thefeedbackresistorand theinput capacitance.Thisphase shiftalsoreducesphase margin.Thiseffectistakencareofatthesame timeas the effectofthecapacitiveloadwhen thecapacitorisplacedacrossthefeedbackresistor. The circuitshown inFigure40 was used forthesescope photos. Figure38.

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013 Figure39. Figure40. TypicalApplications FISH FINDER/ DEPTH SOUNDER. The LM6142/LM6144 isan excellentchoiceforbatteryoperatedfishfinders.The low supplycurrent,highgain- bandwidthand fullrailtorailoutputswingoftheLM6142 providesan idealcombinationforuse inthisand similar applications. ANALOG TO DIGITAL CONVERTER BUFFER The highcapacitiveloaddrivingability,rail-to-railinputand outputrangewiththeexcellentCMR of82 dB, make theLM6142/LM6144 a good choiceforbufferingtheinputsofA toD converters.

3 OP AMP INSTRUMENTATION AMP WITH RAIL-TO-RAIL INPUT AND OUTPUT

UsingtheLM6144, a 3 op amp instrumentationamplifierwithrail-to-railinputsand railtorailoutputcan be made. These featuresmake theseinstrumentationamplifiersidealforsinglesupplysystems. Some manufacturersuse a precisionvoltagedividerarrayof5 resistorstodividethecommon-mode voltageto getan inputrange ofrail-to-railor greater.The problemwiththismethod isthatitalsodividesthesignal,so to even getunitygain,theamplifiermust be run athighclosedloopgains.Thisraisesthenoiseand driftby the internalgainfactorand lowerstheinputimpedance.Any mismatch intheseprecisionresistorsreducestheCMR as well.UsingtheLM6144, alloftheseproblemsareeliminated. Inthisexample,amplifiersA and B actas bufferstothedifferentialstage(Figure41).These buffersassurethat the inputimpedance isover 100M Ω and theyeliminatethe requirementforprecisionmatched resistorsinthe inputstage.They alsoassurethatthe differenceamp isdrivenfrom a voltagesource.Thisisnecessaryto maintaintheCMR setby thematchingofR1 –R2 withR3 –R4. Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:LM6142 LM6144

LM6142,LM6144 SNOS726D –JUNE 2000–REVISED MARCH 2013 www.ti.com Figure41. The gainissetby theratioofR2/R1 and R3 shouldequalR1 and R4 equalR2. Making R4 slightlysmallerthan R2 and addinga trimpotequaltotwicethedifferencebetween R2 and R4 willallowtheCMR tobe adjustedfor optimum. With both railto railinputand outputranges,the inputsand outputsare onlylimitedby the supplyvoltages. Remember thateven withrail-to-railoutput,theoutputcan notswingpastthesuppliesso thecombined common mode voltageplusthesignalshouldnotbe greaterthanthesuppliesorlimitingwilloccur. SPICE MACROMODEL A SPICE macromodel of this and many other Texas Instruments op amps is available http://www.ti.com/ww/en/analog/webench/index.shtml?DCMP=hpa_sva_webench&HQS=webench-bb .

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LM6142,LM6144 www.ti.com SNOS726D –JUNE 2000–REVISED MARCH 2013

REVISION HISTORY

Changes from RevisionC (March 2013)toRevisionD Page Copyright© 2000–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 17 ProductFolderLinks:LM6142 LM6144

www.ti.com 1-Nov-2015 Addendum-Page 1 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp (°C) Device Marking (4/5) Samples LM6142AIM NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 LM614 2AIM LM6142AIM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM614 2AIM LM6142AIMX NRND SOIC D 8 2500 TBD Call TI Call TI -40 to 85 LM614 2AIM LM6142AIMX/NOPB ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM614 2AIM LM6142BIM NRND SOIC D 8 95 TBD Call TI Call TI -40 to 85 LM614 2BIM LM6142BIM/NOPB ACTIVE SOIC D 8 95 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM614 2BIM LM6142BIMX NRND SOIC D 8 2500 TBD Call TI Call TI -40 to 85 LM614 2BIM LM6142BIMX/NOPB ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM614 2BIM LM6142BIN/NOPB ACTIVE PDIP P 8 40 Green (RoHS & no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 85 LM6142 BIN LM6144AIM NRND SOIC D 14 55 TBD Call TI Call TI -40 to 85 LM6144 AIM LM6144AIM/NOPB ACTIVE SOIC D 14 55 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM6144 AIM LM6144AIMX NRND SOIC D 14 TBD Call TI Call TI -40 to 85 LM6144AIMX/NOPB ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM6144 AIM LM6144BIM NRND SOIC D 14 55 TBD Call TI Call TI -40 to 85 LM6144 BIM LM6144BIM/NOPB ACTIVE SOIC D 14 55 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM6144 BIM LM6144BIMX NRND SOIC D 14 2500 TBD Call TI Call TI -40 to 85 LM6144 BIM LM6144BIMX/NOPB ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 LM6144 BIM

www.ti.com 1-Nov-2015 Addendum-Page 2 Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp (°C) Device Marking (4/5) Samples LM6144BIN/NOPB ACTIVE PDIP NFF 14 25 Green (RoHS & no Sb/Br) CU SN Level-1-NA-UNLIM -40 to 85 LM6144BIN (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) (mm) (mm) (mm) (mm) W (mm) Pin1 Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 2-Sep-2015 Pack Materials-Page 1

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM6142AIMX SOIC D 8 2500 367.0 367.0 35.0 LM6142AIMX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LM6142BIMX SOIC D 8 2500 367.0 367.0 35.0 LM6142BIMX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LM6144AIMX/NOPB SOIC D 14 2500 367.0 367.0 35.0 LM6144BIMX SOIC D 14 2500 367.0 367.0 35.0 LM6144BIMX/NOPB SOIC D 14 2500 367.0 367.0 35.0 PACKAGE MATERIALS INFORMATION www.ti.com 2-Sep-2015 Pack Materials-Page 2

www.ti.com N14A (Rev G)

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