LMC7111_14 NSC | Alldatasheet
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 LMC7111TinyCMOS OperationalAmplifierwithRail-to-RailInputandOutput Check forSamples: LMC7111 1FEATURES DESCRIPTION The LMC7111 is a micropower CMOS operational 2• Tiny5-PinSOT-23 Package Saves Space amplifieravailablein the space saving SOT-23• Very Wide Common Mode InputRange package.This makes the LMC7111 idealforspace
- Specifiedat2.7V,5V,and 10V and weightcriticaldesigns.The wide common-mode input range makes it easy to design battery• TypicalSupply Current25 μA at5V monitoringcircuitswhich sense signalsabove theV+
- 50 kHz Gain-Bandwidth at5V supply.The main benefitsof the Tiny package are
- SimilartoPopularLMC6462 most apparentin smallportableelectronicdevices, such as mobile phones, pagers, and portable• Output toWithin20 mV ofSupply Railat100k computers.The tinyamplifierscan be placedon aLoad board where they are needed, simplifyingboard• Good CapacitiveLoad Drive layout.
APPLICATIONS
- MobileCommunications
- PortableComputing
- CurrentSensing forBatteryChargers
- VoltageReferenceBuffering
- Sensor Interface
- StableBias forGaAs RF Amps Connection Diagram Figure1. 8-PinPDIP Figure2. 5-PinSOT-23 Top View Top View Figure3.ActualSize Pleasebe aware thatan importantnoticeconcerningavailability,standardwarranty,and use incriticalapplicationsof Texas Instrumentssemiconductorproductsand disclaimerstheretoappearsattheend ofthisdatasheet. 2Alltrademarksarethepropertyoftheirrespectiveowners. PRODUCTION DATA informationiscurrentas ofpublicationdate. Copyright© 1999–2013,Texas InstrumentsIncorporatedProductsconform to specificationsper the terms of the Texas Instrumentsstandardwarranty.Productionprocessingdoes not necessarilyincludetestingofallparameters.
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com These deviceshave limitedbuilt-inESD protection.The leadsshouldbe shortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamage totheMOS gates. AbsoluteMaximum Ratings (1)(2) ESD Tolerance(3) SOT-23 Package 2000V DifferentialInputVoltage ±SupplyVoltage VoltageatInput/OutputPin (V+)+ 0.3V,(V−)− 0.3V SupplyVoltage(V+ − V−) 11V CurrentatInputPin ±5 mA CurrentatOutputPin (4) ±30 mA CurrentatPower SupplyPin 30 mA Lead Temp. (Soldering,10 sec.) 260°C StorageTemperatureRange −65°C to+150°C JunctionTemperature(5) 150°C (1) AbsoluteMaximum Ratingsindicatelimitsbeyond whichdamage tothedevicemay occur.OperatingRatingsindicateconditionsfor whichthedeviceisintendedtobe functional,butspecificperformanceisnotensured.Forensuredspecificationsand thetest conditions,see theElectricalCharacteristics. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTISalesOffice/Distributorsforavailabilityand specifications. (3) Human Body Model is1.5kΩ inserieswith100 pF. (4) Appliestobothsingle-supplyand split-supplyoperation.Continuousshortcircuitoperationatelevatedambienttemperaturecan resultin exceedingthemaximum allowedjunctiontemperatureat150°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 2.5V≤ V+ ≤ 11V JunctionTemperatureRange LMC7111AI, LMC7111BI −40°C ≤ TJ ≤ +85°C ThermalResistance(θJA) 8-PinPDIP 115°C/W 5-PinSOT-23 325°C/W (1) AbsoluteMaximum Ratingsindicatelimitsbeyond whichdamage tothedevicemay occur.OperatingRatingsindicateconditionsfor whichthedeviceisintendedtobe functional,butspecificperformanceisnotspecified.Forensuredspecificationsand thetest conditions,see theElectricalCharacteristics. 2.7VDC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 2.7V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) VOS InputOffsetVoltage V+ = 2.7V 0.9 3 7 mV 5 9 max TCV OS InputOffsetVoltage 2.0 μV/°CAverageDrift IB InputBiasCurrent See (3) 0.1 1 1 pA 20 20 max IOS InputOffsetCurrent See (3) 0.01 0.5 0.5 pA 10 10 max R IN InputResistance >10 TeraΩ +PSRR PositivePower Supply 2.7V≤ V+ ≤5.0V, 60 55 55 dB RejectionRatio V− = 0V,VO = 2.5V 50 50 min −PSRR NegativePower Supply −2.7V≤ V− ≤−5.0V, 60 55 55 dB RejectionRatio V− = 0V,VO = 2.5V 50 50 min (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. (3) BiasCurrentspecifiedby designand processing.
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 2.7VDC ElectricalCharacteristics(continued) Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 2.7V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) VCM InputCommon-Mode V+ = 2.7V −0.10 0.0 0.0 V VoltageRange ForCMRR ≥ 50 dB 0.40 0.40 min 2.8 2.7 2.7 V 2.25 2.25 max C IN Common-Mode Input 3 pFCapacitance VO OutputSwing V+ = 2.7V 2.69 2.68 2.68 V R L = 100 kΩ 2.4 2.4 min 0.01 0.02 0.02 V 0.08 0.08 max V+ = 2.7V 2.65 2.6 2.6 V R L = 10 kΩ 2.4 2.4 min 0.03 0.1 0.1 V 0.3 0.3 max ISC OutputShortCircuitCurrent Sourcing,VO = 0V 7 1 1 mA 0.7 0.7 min Sinking,VO = 2.7V 7 1 1 mA 0.7 0.7 min AVOL VoltageGain Sourcing 400 V/mv min Sinking 150 V/mv min IS SupplyCurrent V+ = +2.7V, 20 45 50 μA VO = V+/2 60 65 max 2.7VAC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 2.7V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) SR Slew Rate See (3) 0.015 V/μs GBW Gain-BandwidthProduct 40 kHz (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. (3) Connectedas VoltageFollowerwith1.0Vstepinput.Number specifiedistheslowerofthepositiveand negativeslewrates.Input referred,V+ = 2.7Vand R L = 100 kΩ connectedto1.35V.Amp excitedwith1 kHz toproduceVO = 1 VPP . 3V DC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 3V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) VCM InputCommon-Mode V+ = 3V −0.25 0.0 0.0 V VoltageRange ForCMRR ≥ 50 dB min 3.2 3.0 3.0 V 2.8 2.8 max (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com 3.3VDC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 3.3V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) VCM InputCommon-Mode V+ = 3.3V −0.25 −0.1 −0.1 V VoltageRange ForCMRR ≥ 50 dB 0.00 0.00 min 3.5 3.4 3.4 V 3.2 3.2 max (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. 5V DC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 5V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) VOS InputOffsetVoltage V+ = 5V 0.9 mV max TCV OS InputOffsetVoltage 2.0 μV/°CAverageDrift IB InputBiasCurrent See (3) 0.1 1 1 pA 20 20 max IOS InputOffsetCurrent See (3) 0.01 0.5 0.5 pA 10 10 max R IN InputResistance >10 TeraΩ CMRR Common Mode 0V ≤ VCM ≤ 5V 85 70 60 dB RejectionRatio min +PSRR PositivePower Supply 5V ≤ V+ ≤10V, 85 70 60 dB RejectionRatio V− = 0V,VO = 2.5V min −PSRR NegativePower Supply −5V ≤ V− ≤−10V, 85 70 60 dB RejectionRatio V− = 0V,VO = −2.5V min VCM InputCommon-Mode V+ = 5V −0.3 −0.20 −0.20 V VoltageRange ForCMRR ≥ 50 dB 0.00 0.00 min 5.25 5.20 5.20 V 5.00 5.00 max C IN Common-Mode Input 3 pFCapacitance VO OutputSwing V+ = 5V 4.99 4.98 4.98 Vmin R L = 100 kΩ 0.01 0.02 0.02 Vmax V+ = 5V 4.98 4.9 4.9 Vmin R L = 10 kΩ 0.02 0.1 0.1 Vmin ISC OutputShortCircuitCurrent Sourcing,VO = 0V 7 5 5 mA 3.5 3.5 min Sinking,VO = 3V 7 5 5 mA 3.5 3.5 min AVOL VoltageGain Sourcing 500 V/mv min Sinking 200 V/mv min IS SupplyCurrent V+ = +5V, 25 μA VO = V+/2 max (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. (3) BiasCurrentspecifiedby designand processing.
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 5V AC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 5V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) SR Slew Rate PositiveGoing Slew Rate(3) 0.027 0.015 0.010 V/μs GBW Gain-BandwidthProduct 50 kHz (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. (3) Connectedas VoltageFollowerwith1.0Vstepinput.Number specifiedistheslowerofthepositiveslewrate.The negativeslewrateis faster.Inputreferred,V+ = 5V and R L = 100 kΩ connectedto1.5V.Amp excitedwith1 kHz toproduceVO = 1 VPP . 10V DC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 10V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) VOS InputOffsetVoltage V+ = 10V 0.9 3 7 mV 5 9 max TCV OS InputOffsetVoltage 2.0 μV/°CAverageDrift IB InputBiasCurrent 0.1 1 1 pA 20 20 max IOS InputOffsetCurrent 0.01 0.5 0.5 pA 10 10 max R IN InputResistance >10 TeraΩ +PSRR PositivePower Supply 5V ≤ V+ ≤10V, 80 dB RejectionRatio V− = 0V,VO = 2.5V min −PSRR NegativePower Supply −5V ≤ V− ≤−10V, 80 dB RejectionRatio V− = 0V,VO = 2.5V min VCM InputCommon-Mode V+ = 10V −0.2 −0.15 −0.15 V VoltageRange ForCMRR ≥ 50 dB 0.00 0.00 min 10.2 10.15 10.15 V 10.00 10.00 max C IN Common-Mode Input 3 pFCapacitance ISC OutputShortCircuitCurrent(3) Sourcing,VO = 0V 30 20 20 mA 7 7 min Sinking,VO = 10V 30 20 20 mA 7 7 min AVOL VoltageGain Sourcing 500 V/mv 100 kΩ Load min Sinking 200 V/mv min IS SupplyCurrent V+ = +10V, 25 50 60 μA VO = V+/2 65 75 max VO OutputSwing V+ = 10V 9.99 9.98 9.98 Vmin R L = 100 kΩ 0.01 0.02 0.02 Vmax V+ = 10V 9.98 9.9 9.9 Vmin R L = 10 kΩ 0.02 0.1 0.1 Vmin (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. (3) BiasCurrentspecifiedby designand processing. Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com 10V AC ElectricalCharacteristics Unlessotherwisespecified,alllimitsspecifiedforTJ = 25°C, V+ = 10V,V− = 0V,VCM = VO = V+/2and R L > 1 M Ω.Boldface limitsapplyatthetemperatureextremes. Symbol Parameter Conditions LMC7111AI LMC7111BI UnitsTyp (1) Limit(2) Limit(2) SR Slew Rate See (3) 0.03 V/μs GBW Gain-BandwidthProduct 50 kHz φm Phase Margin 50 deg G m Gain Margin 15 dB Input-Referred f= 1 kHz 110 nV/√HzVoltageNoise VCM = 1V Input-Referred f= 1 kHz 0.03 pA/√HzCurrentNoise (1) TypicalValuesrepresentthemost likelyparametricnorm. (2) Alllimitsarespecifiedby testingorstatisticalanalysis. (3) Connectedas VoltageFollowerwith1.0Vstepinput.Number specifiedistheslowerofthepositiveand negativeslewrates.Input referred,V+ = 10V and R L = 100 kΩ connectedto5V.Amp excitedwith1 kHz toproduceVO = 2 VPP .
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 TypicalPerformance Characteristics TA = 25°C unlessspecified,SingleSupply Supply Current VoltageNoise vs. vs. Supply Voltage Frequency Figure4. Figure5. 2.7VPerformance OffsetVoltage SinkingOutput vs. vs. Common Mode Voltage@ 2.7V Output Voltage Figure6. Figure7. Sourcing Output Gain and Phase vs. vs. Output Voltage CapacitiveLoad @ 2.7V Figure8. Figure9. Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com 2.7VPerformance (continued) Gain and Phase Gain and Phase vs. vs. CapacitiveLoad @ 2.7V CapacitiveLoad @ 2.7V Figure10. Figure11. 3V Performance VoltageNoise Output Voltage vs. vs. Common Mode Voltage@ 3V InputVoltage@ 3V Figure12. Figure13. OffsetVoltage Sourcing Output vs. vs. Common Mode Voltage@ 3V Output Voltage Figure14. Figure15.
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 3V Performance (continued) SinkingOutput Gain and Phase vs. vs. Output Voltage CapacitiveLoad @ 3V Figure16. Figure17. Gain and Phase Gain and Phase vs. vs. CapacitiveLoad @ 3V CapacitiveLoad @ 3V Figure18. Figure19. 5V Performance VoltageNoise Output Voltage vs. vs. Common Mode Voltage@ 5V InputVoltage@ 5V Figure20. Figure21. Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com 5V Performance (continued) OffsetVoltage Sourcing Output vs. vs. Common Mode Voltage@ 5V Output Voltage Figure22. Figure23. SinkingOutput Gain and Phase vs. vs. Output Voltage CapacitiveLoad @ 5V Figure24. Figure25. Gain and Phase Gain and Phase vs. vs. CapacitiveLoad @ 5V CapacitiveLoad @ 5V Figure26. Figure27.
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 5V Performance (continued) Non-Inverting Non-Inverting Small SignalPulse Response Small SignalPulse Response at5V at5V Figure28. Figure29. Non-Inverting Non-Inverting Small SignalPulse Response Large SignalPulse Response at5V at5V Figure30. Figure31. Non-Inverting Non-Inverting Large SignalPulse Response Large SignalPulse Response at5V at5V Figure32. Figure33. Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com 5V Performance (continued) Inverting Inverting Small SignalPulse Response Small SignalPulse Response at5V at5V Figure34. Figure35. Inverting Inverting Small SignalPulse Response Large SignalPulse Response at5V at5V Figure36. Figure37. Inverting Inverting Large SignalPulse Response Large SignalPulse Response at5V at5V Figure38. Figure39.
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 10V Performance VoltageNoise Output Voltage vs. vs. Common Mode Voltage@ 10V InputVoltage@ 10V Figure40. Figure41. OffsetVoltage Sourcing Output vs. vs. Common Mode Voltage@ 10V Output Voltage Figure42. Figure43. SinkingOutput Gain and Phase vs. vs. Output Voltage CapacitiveLoad @ 10V Figure44. Figure45. Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com 10V Performance (continued) Gain and Phase Gain and Phase vs. vs. CapacitiveLoad @ 10V CapacitiveLoad @ 10V Figure46. Figure47. Non-Inverting Non-Inverting Small SignalPulse Response Large SignalPulse Response at10V at10V Figure48. Figure49. Inverting Inverting Small SignalPulse Response Large SignalPulse Response at10V at10V Figure50. Figure51.
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APPLICATION INFORMATION
BENEFITS OF THE LMC7111 TINY AMP Size The smallfootprintoftheSOT-23 packaged Tinyamp, (0.120x 0.118inches,3.05x 3.00mm) saves space on printedcircuitboards,and enablethedesignofsmallerelectronicproducts.Because theyare easiertocarry, many customersprefersmallerand lighterproducts. Height The height(0.056inches,1.43mm) oftheTinyamp makes itpossibletouse itinPCMCIA typeIIIcards. SignalIntegrity Signalscan pickup noisebetween thesignalsourceand theamplifier.By usinga physicallysmalleramplifier package,theTinyamp can be placedclosertothesignalsource,reducingnoisepickupand increasingsignal integrity.The Tinyamp can alsobe placednexttothesignaldestination,such as a bufferforthereferenceofan analogtodigitalconverter. SimplifiedBoard Layout The Tinyamp can simplifyboard layoutinseveralways. First,by placingan amp where amps are needed, insteadofroutingsignalstoa dualorquad device,longpc tracesmay be avoided. By usingmultipleTinyamps insteadof dualsor quads,complex signalroutingand possiblycrosstalkcan be reduced. DIPs availableforprototyping LMC7111 amplifierspackaged inconventional8-pindippackages can be used forprototypingand evaluation withouttheneed touse surfacemountinginearlyprojectstages. Low Supply Current The typical25 μA supplycurrentoftheLMC7111 extendsbatterylifeinportableapplications,and may allowthe reductionofthesizeofbatteriesinsome applications. Wide VoltageRange The LMC7111 ischaracterizedat2.7V,3V, 3.3V,5V and 10V. Performancedataisprovidedatthesepopular voltages.Thiswide voltagerange makes theLMC7111 a good choicefordeviceswhere thevoltagemay vary overthelifeofthebatteries. INPUT COMMON MODE VOLTAGE RANGE The LMC7111 does notexhibitphase inversionwhen an inputvoltageexceedsthenegativesupplyvoltage. The absolutemaximum inputvoltageis 300 mV beyond eitherrailat room temperature.Voltagesgreatly exceedingthismaximum ratingcan cause excessivecurrenttoflowinoroutoftheinputpins,adverselyaffecting reliability. Applicationsthatexceed thisratingmust externallylimitthe maximum inputcurrentto ±5 mA withan input resistoras shown inFigure52. Figure52. R I InputCurrentProtectionfor VoltagesExceeding theSupply Voltage Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:LMC7111
SNOS753E –AUGUST 1999–REVISED MARCH 2013 www.ti.com CAPACITIVE LOAD TOLERANCE The LMC7111 can typicallydirectlydrivea 300 pF loadwithVS = 10V atunitygainwithoutoscillating.The unity gainfolloweristhemost sensitiveconfiguration.Directcapacitiveloadingreducesthephase marginofop-amps. The combinationoftheop-amp'soutputimpedance and thecapacitiveloadinducesphase lag.Thisresultsin eitheran underdamped pulseresponseoroscillation. Capacitiveloadcompensationcan be accomplishedusingresistiveisolationas shown inFigure53.Thissimple techniqueisusefulforisolatingthecapacitiveinputofmultiplexersand A/D converters. Figure53. ResistiveIsolation ofa 330 pF CapacitiveLoad COMPENSATING FOR INPUT CAPACITANCE WHEN USING LARGE VALUE FEEDBACK RESISTORS When usingverylargevaluefeedbackresistors,(usually> 500 kΩ)thelargefeedback resistancecan reactwith theinputcapacitancedue totransducers,photodiodes,and circuitboardparasiticstoreducephase margins. The effectofinputcapacitancecan be compensated forby addinga feedbackcapacitor.The feedbackcapacitor (asinFigure54),C f isfirstestimatedby: (1) or R 1 C IN ≤ R 2 C f (2) whichtypicallyprovidessignificantovercompensation. Printedcircuitboardstraycapacitancemay be largerorsmallerthanthatofa breadboard,so theactualoptimum valueforC F may be different.The valuesofC F shouldbe checked on theactualcircuit.(RefertotheLMC660 quad CMOS amplifierdatasheetfora more detaileddiscussion.) Figure54. CancellingtheEffectofInputCapacitance OUTPUT SWING The outputoftheLMC7111 willgo towithin100 mV ofeitherpower supplyrailfora 10 kΩ loadand to20 mV of the railfora 100 kΩ load.Thismakes the LMC7111 usefulfordrivingtransistorswhich are connectedto the same power supply.By goingveryclosetothesupply,theLMC7111 can turnthetransistorsalltheway on orall theway off.
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www.ti.com SNOS753E –AUGUST 1999–REVISED MARCH 2013 BIASING GaAs RF AMPLIFIERS The capacitiveloadcapability,low currentdraw,and smallsizeoftheSOT-23 LMC7111 make ita good choice forprovidinga stablenegativebiastootherintegratedcircuits. The verysmallsizeoftheLMC7111 and theLM4040 referencetakeup verylittleboardspace. C F and R isolationpreventoscillationswhen drivingcapacitiveloads. Figure55. StableNegativeBias REFERENCE BUFFER FOR A-TO-D CONVERTERS The LMC7111 can be used as a voltagereferencebufferforanalog-to-digitalconverters.Thisworks bestforA- to-Dconverterswhose referenceinputisa staticload,such as dualslopeintegratingA-to-Ds.Converterswhose referenceinputisa dynamic load(thereferencecurrentchanges withtime)may need a fasterdevice,such as theLMC7101 ortheLMC7131. The smallsizeoftheLMC7111 allowsittobe placedclosetothereferenceinput.The low supplycurrent(25μA typical)savespower. For A-to-Dreferenceinputswhich requirehigheraccuracyand loweroffsetvoltage,pleasesee the LMC6462 datasheet.The LMC6462 has performancesimilartotheLMC7111. The LMC6462 isavailableintwo gradeswith reducedinputvoltageoffset. DUAL AND QUAD DEVICES WITH SIMILAR PERFORMANCE The LMC6462 and LMC6464 are dualand quad deviceswithperformancesimilarto the LMC7111. They are availableinbothconventionalthrough-holeand surfacemount packaging.Pleasesee theLMC6462/4 datasheet fordetails. SPICE MACROMODEL A SPICE macromodel isavailablefortheLMC7111. Thismodel includessimulationof:
- Inputcommon-mode voltagerange
- Frequencyand transientresponse Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 17 ProductFolderLinks:LMC7111
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- Quiescentand dynamicsupplycurrent
- Outputswingdependence on loadingconditionsand many more characteristicsas listedon themacro model disk.VisittheLMC7111 productpage on http://www.ti.comforthespicemodel. ADDITIONAL SOT-23 TINY DEVICES Additionalpartsareavailableinthespace savingSOT-23 Tinypackage,includingamplifiers,voltagereferences, and voltageregulators.These devicesinclude— LMC7101 1 MHz gain-bandwidthrail-to-railinputand outputamplifier— highinputimpedance and highgain,700 μA typicalcurrent2.7V,3V,5V and 15V specifications. LM7131 TinyVideoamp with70 MHz gainbandwidth.Specifiedat3V,5V and ± 5V supplies. LMC7211 Comparatorina tinypackage withrail-to-railinputand push-pulloutput.Typicalsupplycurrentof7 μA.Typicalpropagationdelayof7 μs.Specifiedat2.7V,5V and 15V supplies. LMC7221 Comparatorwithan open drainoutputforuse inmixed voltagesystems.SimilartotheLMC7211, excepttheoutputcan be used witha pull-upresistortoa voltagedifferentthanthesupplyvoltage. LP2980 MicropowerSOT 50 mA UltraLow-DropoutRegulator. 10.000V. LM4041 Precisionmicropowershuntvoltagereference1.225Vand adjustable. Visithttp://www.ti.comformore information.
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REVISION HISTORY
Changes from RevisionD (March 2013)toRevisionE Page Copyright© 1999–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 19 ProductFolderLinks:LMC7111
www.ti.com 1-Nov-2013 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 LMC7111BIM5 NRND SOT-23 DBV 5 1000 TBD Call TI Call TI -40 to 85 A01B LMC7111BIM5/NOPB ACTIVE SOT-23 DBV 5 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 A01B LMC7111BIM5X NRND SOT-23 DBV 5 3000 TBD Call TI Call TI -40 to 85 A01B LMC7111BIM5X/NOPB ACTIVE SOT-23 DBV 5 3000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 A01B (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
www.ti.com 1-Nov-2013 Addendum-Page 2 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 26-Mar-2013 Pack Materials-Page 1
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMC7111BIM5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LMC7111BIM5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LMC7111BIM5X SOT-23 DBV 5 3000 210.0 185.0 35.0 LMC7111BIM5X/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 Pack Materials-Page 2
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