OP1652

OPA1652 TI1 | Alldatasheet

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Burr-Brown□Audio OPA1652 OPA1654 www.ti.com SBOS477 –DECEMBER 2011 ™LowNoiseandDistortion,General-Purpose,FET-Input AUDIOOPERATIONALAMPLIFIERS Check forSamples: OPA1652 ,OPA1654 1FEATURES DESCRIPTION The OPA1652 (dual)and OPA1654 (quad)FET-input 234• Low Noise:4.5nV/√Hz at1 kHz operationalamplifiersachievea low 4.5nV/√Hz noise• Low Distortion:0.00005% at1 kHz densitywithan ultralowdistortionof 0.00005% at 1

• Low QuiescentCurrent: kHz. The OPA1652 and OPA1654 op amps offer 2 mA Per Channel rail-to-railoutputswing to within800 mV with2-kΩ load, which increasesheadroom and maximizes• Low InputBias Current:10 pA dynamic range. These devices also have a high• Slew Rate:10 V/μs outputdrivecapabilityof±30 mA.
• Wide Gain Bandwidth: 18 MHz (G = +1) These devicesoperateovera verywide supplyrange• UnityGain Stable of±2.25V to±18 V,or+4.5V to+36 V,on only2 mA
• Rail-to-RailOutput of supply currentper channel.The OPA1652 and OPA1654 op amps are unity-gainstableand provide• Wide Supply Range: excellentdynamic behaviorovera wide rangeofload±2.25V to±18 V,or +4.5V to+36 V conditions.• Dual and Quad VersionsAvailable These devicesalsofeaturecompletelyindependent• Small Package Sizes: circuitryfor lowest crosstalkand freedom fromDUAL: SO-8 and MSOP-8 interactionsbetween channels,even when overdrivenQUAD: SO-14 and TSSOP-14 oroverloaded. The OPA1652 and OPA1654 temperaturerangesareAPPLICATIONS specifiedfrom–40°C to+85°C. SoundPlus™• Analog and DigitalMixers
• Audio EffectsProcessors
• MusicalInstruments
• A/V Receivers
• DVD and Blu-Ray™ Players
• Car Audio Systems Pleasebe aware thatan importantnoticeconcerningavailability,standardwarranty,and use incriticalapplicationsofTexas Instrumentssemiconductorproductsand disclaimerstheretoappearsattheend ofthisdatasheet. 2SoundPlusisa trademarkofTexas InstrumentsIncorporated. 3Blu-Rayisa trademarkofBlu-RayDiscAssociation. 4Allothertrademarksarethepropertyoftheirrespectiveowners. PRODUCTION DATA informationiscurrentas ofpublicationdate. Copyright© 2011,Texas InstrumentsIncorporatedProductsconform to specificationsper the terms of the Texas Instrumentsstandardwarranty.Productionprocessingdoes not necessarilyincludetestingofallparameters.

OUT□B /c45IN□B +IN□B OUT□A /c45IN□A +IN□A V/c45 A B Out□A /c45In□A +In□A +□In□B /c45In□B Out□B DA B C Out□D /c45In□D +In□D V/c45 +□In□C /c45In□C Out□C OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com This integratedcircuitcan be damaged by ESD. Texas Instrumentsrecommends thatallintegratedcircuitsbe handled with appropriateprecautions.Failuretoobserveproperhandlingand installationprocedurescan cause damage. ESD damage can rangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmay be more susceptibletodamage because verysmallparametricchanges couldcause thedevicenottomeet itspublishedspecifications. PACKAGE INFORMATION (1) PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR PACKAGE MARKING SO-8 D OP1652 OPA1652 MSOP-8 DGK OUPI SO-14 D OP1654 OPA1654 TSSOP-14 PW OP1654 (1) Forthemost currentpackage and orderinginformationsee thePackage OptionAddendum attheend ofthisdocument,orsee theTI web siteatwww.ti.com. ABSOLUTE MAXIMUM RATINGS (1) Over operatingfree-airtemperaturerange(unlessotherwisenoted). OPA1652, OPA1654 UNIT SupplyVoltage VS = (V+)– (V–) 40 V InputVoltage (V–)– 0.5to(V+)+ 0.5 V InputCurrent(Allpinsexceptpower-supplypins) ±10 mA OutputShort-Circuit(2) Continuous OperatingTemperature –55 to+125 °C StorageTemperature –65 to+150 °C JunctionTemperature 200 °C Human Body Model (HBM) 2 kV ESD Ratings Charged DeviceModel (CDM) 1 kV Machine Model (MM) 200 V (1) Stressesabove theseratingsmay cause permanentdamage. Exposuretoabsolutemaximum conditionsforextendedperiodsmay degradedevicereliability.These arestressratingsonly,and functionaloperationofthedeviceattheseorany otherconditionsbeyond thosespecifiedisnotsupported. (2) Short-circuittoVS/2(groundinsymmetricaldualsupplysetups),one amplifierperpackage. PIN CONFIGURATIONS OPA1652: D AND DGK PACKAGES OPA1654: D AND PW PACAKGESSO-8 AND MSOP-8 SO-14 AND TSSOP-14(TOP VIEW) (TOP VIEW)

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www.ti.com SBOS477 –DECEMBER 2011 ELECTRICAL CHARACTERISTICS: VS = ±15 V AtTA = +25°C, R L = 2 kΩ,and VCM = VOUT = midsupply,unlessotherwisenoted. OPA1652, OPA1654 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO PERFORMANCE 0.00005 % THD+N Totalharmonicdistortion+ noise G = +1,f= 1 kHz,VO = 3 VRMS –126 dB 0.00005 %SMPTE/DIN Two-Tone,4:1 (60Hz and 7 kHz) –126 dB 0.00005 %G = +1, DIM 30 (3-kHzsquarewaveIMD Intermodulationdistortion VO = 3 VRMS and 15-kHzsinewave) –126 dB 0.00005 %CCIF Twin-Tone (19kHz and 20 kHz) –126 dB FREQUENCY RESPONSE GBW Gain-bandwidthproduct G = +1 18 MHz SR Slew rate G = –1 10 V/μs Fullpower bandwidth(1) VO = 1 VP 1.6 MHz Overloadrecoverytime G = –10 1 μs Channelseparation(dualand quad) f= 1 kHz –120 dB NOISE en Inputvoltagenoise f= 20 Hz to20 kHz 5.4 μVPP Inputvoltagenoisedensity f= 1 kHz 4.5 nV/√Hz In Inputcurrentnoisedensity f= 1 kHz 0.5 pA/√Hz OFFSET VOLTAGE VS = ±2.25V to±18 V ±0.5 ±1.5 mV VOS Inputoffsetvoltage VS = ±2.25V to±18 V,TA = –40°C to+85°C (2) 2 8 μV/°C PSRR Power-supplyrejectionratio VS = ±2..25V to±18 V 3 8 μV/V INPUT BIAS CURRENT IB Inputbiascurrent VCM = 0 V ±10 ±100 pA IOS Inputoffsetcurrent VCM = 0 V ±10 ±100 pA INPUT VOLTAGE RANGE VCM Common-mode voltagerange (V–)+ 0.5 (V+)– 2 V CMRR Common-mode rejectionratio 100 110 dB INPUT IMPEDANCE Differential 100 ||6 M Ω ||pF Common-mode 6000 ||2 G Ω ||pF OPEN-LOOP GAIN AOL Open-loopvoltagegain (V–)+ 0.8V ≤ VO ≤ (V+)– 0.8V,R L = 2 kΩ 106 114 dB OUTPUT VOUT Voltageoutput R L = 2 kΩ (V–)+ 0.8 (V+)– 0.8 V IOUT Outputcurrent See TypicalCharacteristics mA ZO Open-loopoutputimpedance f= 1 MHz See TypicalCharacteristics Ω ISC Short-circuitcurrent(3) ±50 mA C LOAD Capacitiveloaddrive 100 pF POWER SUPPLY VS Specifiedvoltage ±2.25 ±18 V IOUT = 0 A 2.0 2.5 mAQuiescentcurrentIQ (perchannel) IOUT = 0 A,TA = –40°C to+85°C (2) 2.8 mA (1) Full-powerbandwidth= SR/(2π × VP),where SR = slewrate. (2) Specifiedby designand characterization. (3) One channelata time. Copyright© 2011,Texas InstrumentsIncorporated 3 ProductFolderLink(s):OPA1652 OPA1654

SBOS477 –DECEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±15 V (continued) AtTA = +25°C, R L = 2 kΩ,and VCM = VOUT = midsupply,unlessotherwisenoted. OPA1652, OPA1654 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TEMPERATURE Specifiedrange –40 +85 °C Operatingrange –55 +125 °C THERMAL INFORMATION: OPA1652 OPA1652 THERMAL METRIC (1) D (SO) DGK (MSOP) UNITS

8 PINS 8 PINS

θJA Junction-to-ambientthermalresistance 143.6 218.9 θJCtop Junction-to-case(top)thermalresistance 76.9 78.6 θJB Junction-to-boardthermalresistance 61.8 103.7 °C/W ψJT Junction-to-topcharacterizationparameter 27.8 14.6 ψJB Junction-to-boardcharacterizationparameter 61.3 101.8 θJCbot Junction-to-case(bottom)thermalresistance N/A N/A (1) Formore informationabouttraditionaland new thermalmetrics,see theIC Package ThermalMetricsapplicationreport,SPRA953 . THERMAL INFORMATION: OPA1654 OPA1654 THERMAL METRIC (1) D (SO) PW (TSSOP) UNITS

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θJA Junction-to-ambientthermalresistance 90.1 126.9 θJCtop Junction-to-case(top)thermalresistance 54.8 46.6 θJB Junction-to-boardthermalresistance 44.4 58.6 °C/W ψJT Junction-to-topcharacterizationparameter 19.9 5.5 ψJB Junction-to-boardcharacterizationparameter 44.2 57.8 θJCbot Junction-to-case(bottom)thermalresistance N/A N/A (1) Formore informationabouttraditionaland new thermalmetrics,see theIC Package ThermalMetricsapplicationreport,SPRA953 .

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Time (1 s/div) Voltage Noise (500 nV/div) G002 100 1 10 100 1k 10k 100k Frequency (Hz) Voltage Noise (nV/Hz) G001 10k 100k 1M 10M Frequency (Hz) Output Voltage (V) VS = ± 15 V VS = ± 2.25 V G004 100 10k 100 1k 10k 100k 1M Resistor Noise OPA166x OPA165x Source Resistance ( )/c87 Voltage Noise (nV/ Hz) Eo 2 = en 2 + (inRS)2 + 4KTRS G003 RS EO 10 100 1k 10k 100k 1M 10M 100M −20 100 120 140 135 180 Frequency (Hz) Gain (dB) Phase (°) Gain Phase C L = 10 pF G005 −20 100k 1M 10M 100M Frequency (Hz) Gain (dB) Gain = −1 V/V Gain = +1 V/V Gain = +10 V/V C L = 10 pF G006 OPA1652 OPA1654 www.ti.com SBOS477 –DECEMBER 2011 TYPICAL CHARACTERISTICS AtTA = +25°C, VS = ±15 V,and R L = 2 kΩ,unlessotherwisenoted. INPUT VOLTAGE NOISE DENSITY vs FREQUENCY 0.1HzTO 10Hz NOISE Figure1. Figure2. VOLTAGE NOISE vs SOURCE RESISTANCE MAXIMUM OUTPUT VOLTAGE vs FREQUENCY Figure3. Figure4. GAIN AND PHASE vs FREQUENCY CLOSED-LOOP GAIN vs FREQUENCY Figure5. Figure6. Copyright© 2011,Texas InstrumentsIncorporated 5 ProductFolderLink(s):OPA1652 OPA1654

0.00001 0.0001 0.001 0.01 20 100 1k 10k 20k Frequency (Hz) THD+N (%) G = 10 V/V, RL = 600 Ω G = 10 V/V, RL = 2 kΩ G = +1 V/V, RL = 600 Ω G = +1 V/V, RL = 2 kΩ G = −1 V/V, RL = 600 Ω G = −1 V/V, RL = 2 kΩ VOUT = 3 VRMS BW = 80 kHz G007 0.00001 0.0001 0.001 0.01 20 100 1k 10k 20k Frequency (Hz) THD+N (%) RS = 0 /c87 RS = 30 /c87 RS = 60 /c87 RS = 1 k/c87 VOUT = 3 VRMS BW = 80 kHz G008 OP A1652 +15V /c45 15V RL RSOURCE 0.00001 0.0001 0.001 0.01 20 100 1k 10k 100k Frequency (Hz) THD+N (%) G = 10 V/V, RL = 600 Ω G = 10 V/V, RL = 2 kΩ G = +1 V/V, RL = 600 Ω G = +1 V/V, RL = 2 kΩ G = −1 V/V, RL = 600 Ω G = −1 V/V, RL = 2 kΩ VOUT = 3 VRMS BW = 500 kHz G009 0.00001 0.0001 0.001 0.01 20 100 1k 10k 100k Frequency (Hz) THD+N (%) RS = 0 /c87 RS = 30 /c87 RS = 60 /c87 RS = 1 k/c87 VOUT = 3 VRMS BW = 500 kHz G010 OP A1652 +15V /c45 15V RL RSOURCE 0.00001 0.0001 0.001 0.01 1m 10m 100m 1 10 20 Output Amplitude (Vrms) THD+N (%) G = 10 V/V, RL = 600 Ω G = 10 V/V, RL = 2 kΩ G = +1 V/V, RL = 600 Ω G = +1 V/V, RL = 2 kΩ G = −1 V/V, RL = 600 Ω G = −1 V/V, RL = 2 kΩ f = 1 kHz BW = 80 kHz R S = 0 Ω G011 0.00001 0.0001 0.001 0.01 100m 1 10 20 Output Amplitude (Vrms) THD+N (%) DIM 30: 3 kHz − Square Wave, 15 kHz Sine Wave CCIF Twin Tone: 19 kHz and 20 kHz SMPTE / DIN: Two −Tone 4:1, 60 Hz and 7 KHz G = +1 V/V G012 OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) AtTA = +25°C, VS = ±15 V,and R L = 2 kΩ,unlessotherwisenoted. THD+N RATIO vs FREQUENCY THD+N RATIO vs FREQUENCY Figure7. Figure8. THD+N RATIO vs FREQUENCY THD+N RATIO vs FREQUENCY Figure9. Figure10. INTERMODULATION DISTORTION vs THD+N RATIO vs OUTPUT AMPLITUDE OUTPUT AMPLITUDE Figure11. Figure12.

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−160 −140 −120 −100 −80 100 1k 10k 100k Frequency (Hz) Crosstalk (dB) VOUT = 3 VRMS Gain = +1 V/V G013 100 120 140 100 1k 10k 100k 1M 10M 100M Frequency (Hz) CMRR, PSRR (dB) +PSRR −PSRR CMRR G014 Time (0.2 s/div)/c109 Voltage (25 mV/div) VIN VOUT G = +1 V/V CL = 100 pF G015 Time (0.2 s/div)/c109 Voltage (25 mV/div) VIN VOUT G = −1 V/V CL = 100 pF G016 Time (1 s/div)/c109 Voltage (2.5 V/div) VIN VOUT G = + 1V/V RF = 2 k/c87 CL = 100 pF G017 Time (1 s/div)/c109 Voltage (2.5 V/div) VIN VOUT G018 G = −1 V/V CL = 100 pF OPA1652 OPA1654 www.ti.com SBOS477 –DECEMBER 2011 TYPICAL CHARACTERISTICS (continued) AtTA = +25°C, VS = ±15 V,and R L = 2 kΩ,unlessotherwisenoted. CHANNEL SEPARATION vs FREQUENCY CMRR AND PSRR vs FREQUENCY (ReferredtoInput) Figure13. Figure14. SMALL-SIGNAL STEP RESPONSE SMALL-SIGNAL STEP RESPONSE (100mV) (100mV) Figure15. Figure16. LARGE-SIGNAL STEP RESPONSE LARGE-SIGNAL STEP RESPONSE Figure17. Figure18. Copyright© 2011,Texas InstrumentsIncorporated 7 ProductFolderLink(s):OPA1652 OPA1654

0 50 100 150 200 250 300 350 400 Capacitance (pF) Overshoot (%) RS = 0 /c87 RS = 25 /c87 RS = 50 /c87 VOUT = 100 mVPP G = +1 V/V G019 +15 V /c45 15 V RS CL OP A1652 RL 0 50 100 150 200 250 300 350 400 Capacitance (pF) Overshoot (%) RS = 0 /c87 RS = 25 /c87 RS = 50 /c87 VOUT = 100 mVPP G = −1 V/V G020 OP A1652 R =I 2 k/c87 RS CL RF = 2 k/c87 +15 V /c45 15 V −40 −15 10 35 60 85 110 135 Temperature (°C) AOL (µV) R L = 2 kΩ G022 0 1 2 3 4 5 Capacitance (pF) Overshoot (%) VOUT = 100 mVPP G = −1 V/V RS = 0 /c87 G021 OP A1652 R =I 2 k/c87 RS CL CF RF = 2 k/c87 +15 V /c45 15 V −2000 −1600 −1200 −800 −400 400 800 1200 −40 −15 10 35 60 85 110 135 Temperature (°C) Ib and Ios Current (pA) Ibn Ibp Ios G023 −18 −15 −12 −9 −6 −3 0 3 6 9 12 15 18 Common − Mode Voltage (V) Ib and Ios Current (pA) Ibp Ibn Ios G024 OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) AtTA = +25°C, VS = ±15 V,and R L = 2 kΩ,unlessotherwisenoted. SMALL-SIGNAL OVERSHOOT SMALL-SIGNAL OVERSHOOT vs CAPACITIVE LOAD vs CAPACITIVE LOAD Figure19. Figure20. SMALL-SIGNAL OVERSHOOT vs FEEDBACK CAPACITOR (100mV Output Step) OPEN-LOOP GAIN vs TEMPERATURE Figure21. Figure22. IB AND IOS vs TEMPERATURE IB AND IOS vs COMMON-MODE VOLTAGE Figure23. Figure24.

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0.5 1.5 2.5 −40 −15 10 35 60 85 110 135 Temperature (°C) Supply Current (mA) G025 0.5 1.5 2.5 0 4 8 12 16 20 24 28 32 36 Supply Voltage (V) Supply Current (mA) G026 −40 −30 −20 −10 0 5 10 15 20 25 30 35 40 45 50 55 60 Output Current (mA) Output Volage Swing (V) −40 C −25 C 0 C 25 C 85 C 125 C G029 −100 −80 −60 −40 −20 100 −40 −15 10 35 60 85 110 135 Temperature (°C) Isc (mA) +Isc −Isc G028 0 50 100 150 200 250 300 350 400 Capacitance (pF) Phase Margin (°) G = +1 V/V G031 0 50 100 150 200 250 300 350 400 Capacitance (pF) Overshoot (%) VS = ± 2.25 V VS = ± 18 V G = +1 V/V VIN = 100 mVPP G032 OPA1652 OPA1654 www.ti.com SBOS477 –DECEMBER 2011 TYPICAL CHARACTERISTICS (continued) AtTA = +25°C, VS = ±15 V,and R L = 2 kΩ,unlessotherwisenoted. SUPPLY CURRENT vs TEMPERATURE SUPPLY CURRENT vs SUPPLY VOLTAGE Figure25. Figure26. OUTPUT VOLTAGE vs OUTPUT CURRENT SHORT-CIRCUIT CURRENT vs TEMPERATURE Figure27. Figure28. PHASE MARGIN vs CAPACITIVE LOAD PERCENT OVERSHOOT vs CAPACITIVE LOAD Figure29. Figure30. Copyright© 2011,Texas InstrumentsIncorporated 9 ProductFolderLink(s):OPA1652 OPA1654

Time (0.4 s/div)/c109 Output Voltage (5 V/div) VIN VOUT G = −10 V/V G033 2 k/c87 20 k/c87 VIN VOUTOP A1652 G = 10/c45 +18 V /c45 18 V Time (0.4 s/div)/c109 Output Voltage (5 V/div) VIN VOUT G = −10 V/V G027 2 k/c87 20 k/c87 VIN VOUTOP A1652 G = 10/c45 +18 V /c45 18 V G = +1 V/V −20 −15 −10 Time (125 s/div)/c109 Voltage (V) VIN VOUT G034 +18 V /c45 18 V 37VPP Sine Wave ( 18.5 V)/c177 OP A1652 100 10 100 1k 10k 100k 1M 10M 100M Frequency (Hz) Impedance (Ω ) G030 OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) AtTA = +25°C, VS = ±15 V,and R L = 2 kΩ,unlessotherwisenoted. NEGATIVE OVERLOAD RECOVERY POSITIVE OVERLOAD RECOVERY Figure31. Figure32. OPEN-LOOP OUTPUT IMPEDANCE vs FREQUENCY NO PHASE REVERSAL Figure33. Figure34.

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APPLICATION INFORMATION

adequate.Figure35 shows a simplifiedschematicof In allcases, the common-mode voltagemust be theOPA165x (onechannelshown). maintainedwithinthespecifiedrange.Inaddition,key parameters are assured over the specified temperature range of TA = –40°C to +85°C.OPERATING VOLTAGE Parameters that vary significantlywith operatingThe OPA165x seriesop amps operatefrom ±2.25V voltageor temperatureare shown in the Typicalto ±18 V supplies while maintainingexcellent Characteristics.performance.The OPA165x seriescan operatewith as littleas +4.5V between thesuppliesand withup to +36 V between the supplies.However, some Figure35. OPA165x SimplifiedSchematic Copyright© 2011,Texas InstrumentsIncorporated 11 ProductFolderLink(s):OPA1652 OPA1654

Source Resistance (Ω ) Voltage Noise (nV/Hz ) Eo 2 = en 2 + (inR S)2 + 4KTRS G003 OP A165x Output RF Input /c45 RI OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com INPUT PROTECTION The equationin Figure37 shows the calculationof thetotalcircuitnoise,withtheseparameters:The inputterminalsof the OPA1652 and OPA1654 • en = Voltagenoiseare protectedfrom excessivedifferentialvoltagewith

• in = Currentnoiseback-to-backdiodes,as Figure36 illustrates.Inmost circuitapplications,the inputprotectioncircuitryhas • R S = Sourceimpedance no consequence.However, in low-gainor G = +1 • k = Boltzmann’s constant= 1.38× 10–23 J/Kcircuits,fastramping inputsignalscan forwardbias • T = TemperatureinKelvins(K)these diodes because the outputof the amplifier cannotrespond rapidlyenough to the inputramp. If theinputsignalisfastenough tocreatethisforward biascondition,theinputsignalcurrentmust be limited to 10 mA or less.Ifthe inputsignalcurrentisnot inherentlylimited,an inputseriesresistor(RI) and/or a feedback resistor(RF) can be used to limitthe signalinput current.This resistordegrades the low-noiseperformance of the OPA165x and is examined inthefollowingNoisePerformancesection. Figure36 shows an example configurationwhen both current-limitinginputand feebackresistorsareused. Figure37. Noise Performance oftheOPA165x in Unity-GainBufferConfiguration BASIC NOISE CALCULATIONS Design of low-noiseop amp circuitsrequirescareful considerationof a variety of possible noise contributors:noise from the signalsource,noise generated in the op amp, and noise from theFigure36. Pulsed Operation feedback network resistors.The totalnoise of the circuitistheroot-sum-squarecombinationofallnoise components.NOISE PERFORMANCE The resistiveportionof the source impedanceFigure37 shows the totalcircuitnoise forvarying produces thermalnoise proportionalto the squaresourceimpedances withthe op amp ina unity-gain rootof the resistance.Figure37 plotsthisequation.configuration(no feedback resistornetwork,and The sourceimpedance isusuallyfixed;consequently,thereforeno additionalnoisecontributions). selectthe op amp and the feedback resistorstoThe OPA165x (GBW = 18 MHz, G = +1) isshown minimize the respectivecontributionsto the totalwithtotalcircuitnoisecalculated.The op amp itself noise.contributesboth a voltagenoise component and a Figure38 illustratesboth invertingand noninvertingcurrentnoise component. The voltage noise is op amp circuitconfigurationswith gain.In circuitcommonly modeled as a time-varyingcomponent of configurationswith gain, the feedback networkthe offsetvoltage.The currentnoiseismodeled as resistorsalsocontributenoise.The currentnoiseofthetime-varyingcomponent oftheinputbiascurrent the op amp reactswith the feedback resistorstoand reactswiththe source resistanceto createa createadditionalnoise components. The feedbackvoltagecomponent of noise.Therefore,the lowest resistorvalues can generallybe chosen to makenoiseop amp fora givenapplicationdepends on the these noise sources negligible.The equationsforsource impedance. For low source impedance, totalnoiseareshown forbothconfigurations.current noise is negligible,and voltage noise generallydominates. The voltage noise of the OPA165x seriesop amps makes them a better choiceforsourceimpedances greaterthan or equal to1 kΩ.

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A)□Noise□in□Noninverting□Gain□Configuration B)□Noise□in□Inverting□Gain□Configuration Noise□at□the□output: Where□e =S 4kTRS 4kTR1 4kTR2 =□thermal□noise□of□RS =□thermal□noise□of□R1 =□thermal□noise□of□R2 e =1 e =2 Noise□at□the□output: E =O 1□+ R +□R1 S R +□R1 S 2 22 Where□e =S 4kTRS 4kTR1 4kTR2 =□thermal□noise□of□RS =□thermal□noise□of□R1 =□thermal□noise□of□R2 e =1 e =2 R +□R1 S 1□+ 1□+ R2 e +□e +1 2 2 2 E =O e +n es e +□e +1 2 2 2 es e +n OPA1652 OPA1654 www.ti.com SBOS477 –DECEMBER 2011 Note: FortheOPA165x seriesofop amps at1kHz,en = 4.5nV/√Hz. Figure38. Noise CalculationinGain Configurations Copyright© 2011,Texas InstrumentsIncorporated 13 ProductFolderLink(s):OPA1652 OPA1654

Signal Gain = 1+ Distortion Gain = 1+ R3 V = 3 VO RMS Generator Output Analyzer Input Audio Precision System Two(1) with PC Controller SIGNAL GAIN DISTORTION GAIN R1 R2 R3 /c165 4.99 k/c87 1 k/c87 4.99 k/c87 10 /c87 49.9 /c87 /c45 1 101 549 /c87 4.99 k/c87 49.9 /c87+10 110 101R2 R II R1 3 Load OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com TOTAL HARMONIC DISTORTION The validityof thistechniquecan be verifiedby MEASUREMENTS duplicatingmeasurements at high gain and/orhigh measurement instruments.The distortionproduced by the OPA165x seriesop amps is below the measurement limitof many commerciallyavailabledistortionanalyzers.However, CAPACITIVE LOADS a specialtestcircuit(suchas Figure39 shows) can The dynamic characteristicsof the OPA1652 andbe used toextendthemeasurement capabilities. OPA1654 have been optimized for commonly Op amp distortioncan be consideredan internalerror encounteredgains,loads,and operatingconditions. source thatcan be referredto the input.Figure39 The combinationof low closed-loopgain and high shows a circuitthatcauses the op amp distortionto capacitiveloadsdecreasesthe phase margin of the be gainedup (referto the tableinFigure39 forthe amplifierand can leadtogainpeakingoroscillations. distortiongain factorforvarioussignalgains).The As a result,heaviercapacitiveloadsmust be isolated additionofR 3 totheotherwisestandardnoninverting from the output.The simplestway to achievethis amplifierconfigurationaltersthe feedback factoror isolationistoadd a smallresistor(RS equalto50 Ω, noise gain of the circuit.The closed-loopgain is forexample)inserieswiththeoutput. techniquesand applicationcircuits. (1)Formeasurement bandwidth,see Figure7 throughFigure12. Figure39. DistortionTestCircuit

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5□k/c87 Device 10□mA□max VIN VOUT IOVERLOAD OPA1652 OPA1654 www.ti.com SBOS477 –DECEMBER 2011 POWER DISSIPATION The OPA1652 and OPA1654 seriesop amps are capable of driving2-kΩ loads witha power-supply voltageup to ±18V and fulloperatingtemperature range. Internalpower dissipationincreaseswhen operatingathighsupplyvoltages.Copper leadframe constructionused in the OPA165x seriesop amps improvesheat dissipationcompared to conventional materials.Circuitboardlayoutcan alsohelpminimize Figure40. InputCurrentProtection junctiontemperaturerise.Wide copper traceshelp dissipatethe heat by actingas an additionalheat An ESD event produces a short duration,sink.Temperaturerisecan be furtherminimizedby high-voltagepulse thatis transformedintoa shortsolderingthedevicestothecircuitboard ratherthan duration,high-currentpulseas itdischargesthroughusinga socket. a semiconductordevice.The ESD protectioncircuits are designed to providea currentpath around theELECTRICAL OVERSTRESS operationalamplifiercore to preventitfrom being damaged. The energy absorbed by the protectionDesignersoftenask questionsaboutthecapabilityof circuitryisthendissipatedas heat.an operationalamplifierto withstand electrical These ESD protectiondiodesalsoprovidein-circuit, Ifthereis an uncertaintyabout the abilityof theinputoverdriveprotection,as longas the currentis supplyto absorb thiscurrent,externalzener diodeslimitedto10 mA as statedintheAbsoluteMaximum may be added tothesupplypins.The zenervoltageRatings.Figure40 shows how a seriesinputresistor must be selectedsuch thatthe diodedoes not turnmay be added to the driveninputto limitthe input on duringnormaloperation.current.The added resistorcontributesthermalnoise However, itszenervoltageshouldbe low enough soattheamplifierinputand itsvalueshouldbe kepttoa thatthezenerdiodeconductsifthesupplypinbeginsminimum innoise-sensitiveapplications. toriseabove thesafeoperatingsupplyvoltagelevel. Copyright© 2011,Texas InstrumentsIncorporated 15 ProductFolderLink(s):OPA1652 OPA1654

0.1 F/c109

/c45 VA ( 15 V)/c45 +VA (+15 V) 680 /c87 620 /c87 330 /c87 /c45 VA ( 15 V)/c45 +VA (+15 V) /c45 VA ( 15 V)/c45 +VA (+15 V) 680 /c87 620 /c87 L Ch Output OPA1652 OPA1654 SBOS477 –DECEMBER 2011 www.ti.com APPLICATION CIRCUIT An additionalapplicationideaisshown inFigure41. Figure41. Audio DAC I/VConverterand Output Filter

16 Copyright© 2011,Texas InstrumentsIncorporated

ProductFolderLink(s):OPA1652 OPA1654

www.ti.com 28-Mar-2012 Addendum-Page 1 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) OPA1652AID ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA1652AIDGK ACTIVE MSOP DGK 8 80 Green (RoHS & no Sb/Br) CU NIPDAUAG Level-1-260C-UNLIM OPA1652AIDGKR ACTIVE MSOP DGK 8 2500 Green (RoHS & no Sb/Br) CU NIPDAUAG Level-1-260C-UNLIM OPA1652AIDR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA1654AID ACTIVE SOIC D 14 50 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA1654AIDR ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA1654AIPW ACTIVE TSSOP PW 14 90 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR OPA1654AIPWR ACTIVE TSSOP PW 14 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR (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.

www.ti.com 28-Mar-2012 Addendum-Page 2 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 19-Apr-2012 Pack Materials-Page 1

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA1652AIDGKR MSOP DGK 8 2500 364.0 364.0 27.0 OPA1652AIDR SOIC D 8 2500 346.0 346.0 29.0 OPA1654AIDR SOIC D 14 2500 346.0 346.0 33.0 OPA1654AIPWR TSSOP PW 14 2000 346.0 346.0 29.0 PACKAGE MATERIALS INFORMATION www.ti.com 19-Apr-2012 Pack Materials-Page 2

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