enios5

SingleandDual,UltralowDistortion,UltralowNoiseOpAmpsDataSheetAD8597/AD8599Rev.
FDocumentFeedbackInformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.
However,noresponsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.
Specificationssubjecttochangewithoutnotice.
NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
OneTechnologyWay,P.
O.
Box9106,Norwood,MA02062-9106,U.
S.
A.
Tel:781.
329.
47002007–2017AnalogDevices,Inc.
Allrightsreserved.
TechnicalSupportwww.
analog.
comFEATURESLownoise:1.
1nV/√Hzat1kHzLowdistortion:120dBTHDat1kHzInputnoise,0.
1Hzto10Hz:0MHzSupplycurrent:4.
8mA/amptypicalLowoffsetvoltage:10μVtypicalCMRR:120dBUnity-gainstable±15VoperationAPPLICATIONSProfessionalaudiopreamplifiersATE/precisiontestersImagingsystemsMedical/physiologicalmeasurementsPrecisiondetectors/instrumentsPrecisiondataconversionPINCONFIGURATIONS06274-060NC1–IN2+IN3V–4NC8V+7OUT6NC5NC=NOCONNECTAD8597TOPVIEW(NottoScale)Figure1.
AD85978-LeadSOIC(R-8)NC–IN+INV–V+NCOUTNC06274-061NOTES1.
NC=NOCONNECT.
2.
ITISRECOMMENDEDTHATTHEEXPOSEDPADBECONNECTEDTOV–.
34126587AD8597TOPVIEW(NottoScale)Figure2.
AD85978-LeadLFCSP(CP-8-13)OUTA1–INA2+INA3–V4+V8OUTB7–INB6+INB5AD8599TOPVIEW(NottoScale)06274-054Figure3.
AD85998-LeadSOIC(R-8)GENERALDESCRIPTIONTheAD8597/AD8599areverylownoise,lowdistortionopera-tionalamplifiersidealforuseaspreamplifiers.
Thelownoiseof1.
1nV/√Hzandlowharmonicdistortionof120dB(orbetter)ataudiobandwidthsgivetheAD8597/AD8599thewidedynamicrangenecessaryforpreamplifiersinaudio,medical,andinstru-mentationapplications.
Theexcellentslewrateof14V/μsand10MHzgainbandwidthmakethemhighlysuitableformedicalapplications.
Thelowdistortionandfastsettlingtimemakethemidealforbufferingofhighresolutiondataconverters.
TheAD8597isavailablein8-leadSOICandLFCSPpackages,whiletheAD8599isavailableinan8-leadSOICpackage.
Theyarebothspecifiedovera40°Cto+125°Ctemperaturerange.
TheAD8597andAD8599aremembersofagrowingseriesoflownoiseopampsofferedbyAnalogDevices,Inc.
(seeTable1).
Table1.
LowNoiseOpAmpsPackage0.
9nV1.
1nV1.
8nV2.
8nV3.
8nVSingleAD797AD8597ADA4004-1AD8675AD8671DualAD8599ADA4004-2AD8676AD8672QuadADA4004-4AD8674AD8597/AD8599DataSheetRev.
F|Page2of20TABLEOFCONTENTSFeatures1Applications.
1PinConfigurations1GeneralDescription.
1RevisionHistory2Specifications.
3AbsoluteMaximumRatings.
5ThermalResistance.
5PowerSequencing5ESDCaution.
5TypicalPerformanceCharacteristics6FunctionalOperation.
15InputVoltageRange.
15OutputPhaseReversal.
15NoiseandSourceImpedanceConsiderations15OutlineDimensions.
17OrderingGuide17REVISIONHISTORY9/2017—Rev.
EtoRev.
FChangedCP-8-2toCP-8-13ThroughoutUpdatedOutlineDimensions.
17ChangestoOrderingGuide1710/2013—Rev.
DtoRev.
EChangetoFigure15Caption7ChangestoFigure23andFigure26.
9ChangestoFigure30andFigure33.
10ChangestoFigure46throughFigure50.
13ChangestoFigure53andFigure54.
142/2013—Rev.
CtoRev.
DChangestoFigure44.
12ChangestoFigure46andFigure49.
1312/2009—Rev.
BtoRev.
CChangestoTable1.
110/2008—Rev.
AtoRev.
BAddedAD8597UniversalAddedLFCSP_VDUniversalAddedTable1.
1ChangestoSpecificationsSection.
3ChangestoAbsoluteMaximumRatingsSection.
5ChangestoTypicalPerformanceCharacteristicsSection6AddedFigure12andFigure157AddedFigure18andFigure198AddedFigure30andFigure3310AddedFigure34toFigure3811AddedFigure42andFigure4512AddedFigure52,Figure55,Figure5714AddedFunctionalOperationSection.
15AddedFigure5815UpdatedOutlineDimensions.
17ChangestoOrderingGuide.
174/2007—Rev.
0toRev.
AUpdatedLayout5ChangestoFigure45Caption12AddedFigure4812ChangestoFigure51Caption132/2007—Revision0:InitialVersionDataSheetAD8597/AD8599Rev.
F|Page3of20SPECIFICATIONSVSY=±5V,VCM=0V,VO=0V,TA=25°C,unlessotherwisespecified.
Table2.
ParameterSymbolConditionsMinTypMaxUnitINPUTCHARACTERISTICSOffsetVoltageVOS15120μV40°C≤TA≤+125°C180μVOffsetVoltageDriftΔVOS/ΔT40°C≤TA≤+125°C0.
82.
2μV/°CInputBiasCurrentIB40210nA40°C≤TA≤+125°C340nAInputOffsetCurrentIOS65250nA40°C≤TA≤+125°C340nAInputVoltageRangeIVR2.
0+2.
0VCommon-ModeRejectionRatioCMRR2.
0V≤VCM≤+2.
0V120135dB40°C≤TA≤+125°C105dBLargeSignalVoltageGainAVORL≥600Ω,VO=11Vto+11V105110dB40°C≤TA≤+125°C100dBInputCapacitanceDifferentialCapacitanceCDIFF15.
4pFCommon-ModeCapacitanceCCM5.
5pFOUTPUTCHARACTERISTICSOutputVoltageHighVOHRL=600Ω3.
53.
7V40°C≤TA≤+125°C3.
3VRL=2kΩ3.
73.
8V40°C≤TA≤+125°C3.
5VOutputVoltageLowVOLRL=600Ω3.
63.
4V40°C≤TA≤+125°C3.
3VRL=2kΩ3.
73.
5V40°C≤TA≤+125°C3.
4VOutputShort-CircuitCurrentISC±52mAClosed-LoopOutputImpedanceZOUTAt1MHz,AV=15ΩPOWERSUPPLYPowerSupplyRejectionRatioPSRRVSY=±18Vto±4.
5V120140dB40°C≤TA≤+125°C118dBSupplyCurrentperAmplifierISY4.
85.
5mA40°C≤TA≤+125°C6.
5mADYNAMICPERFORMANCESlewRateSRAV=1,RL=2kΩ14V/μsAV=1,RL=2kΩ14V/μsSettlingTimetSTo0.
01%,step=10V2μsGainBandwidthProductGBP10MHzPhaseMarginΦM60DegreesNOISEPERFORMANCEPeak-to-PeakNoiseenp-p0.
1Hzto10Hz76nVp-pVoltageNoiseDensityenf=1kHz1.
071.
15nV/√Hzf=10Hz1.
5nV/√HzCorrelatedCurrentNoisef=1kHz2.
0pA/√Hzf=10Hz4.
2pA/√HzUncorrelatedCurrentNoisef=1kHz2.
4pA/√Hzf=10Hz5.
2pA/√HzTotalHarmonicDistortion+NoiseTHD+NG=1,RL≥1kΩ,f=1kHz,VRMS=1V120dBChannelSeparationCSf=10kHz120dBAD8597/AD8599DataSheetRev.
F|Page4of20VS=±15V,VCM=0V,VO=0V,TA=+25°C,unlessotherwisespecified.
Table3.
ParameterSymbolConditionsMinTypMaxUnitINPUTCHARACTERISTICSOffsetVoltageVOS10120μV40°C≤TA≤+125°C180μVOffsetVoltageDriftΔVOS/ΔT40°C≤TA≤+125°C0.
82.
2μV/°CInputBiasCurrentIB25200nA40°C≤TA≤+125°C300nAInputOffsetCurrentIOS50200nA40°C≤TA≤+125°C300nAInputVoltageRangeIVR12.
5+12.
5VCommon-ModeRejectionRatioCMRR12.
5V≤VCM≤+12.
5V120135dB40°C≤TA≤+125°C115dBLargeSignalVoltageGainAVORL≥600Ω,VO=11Vto+11V110116dB40°C≤TA≤+125°C106dBInputCapacitanceDifferentialCapacitanceCDIFF12.
1pFCommon-ModeCapacitanceCCM5.
1pFOUTPUTCHARACTERISTICSOutputVoltageHighVOHRL=600Ω13.
113.
4V40°C≤TA≤+125°C12.
8VRL=2kΩ13.
513.
7V40°C≤TA≤+125°C13.
2VOutputVoltageLowVOLRL=600Ω13.
212.
9V40°C≤TA≤+125°C12.
8VRL=2kΩ13.
513.
4V40°C≤TA≤+125°C13.
3VOutputShort-CircuitCurrentISC±52mAClosed-LoopOutputImpedanceZOUTAt1MHz,AV=15ΩPOWERSUPPLYPowerSupplyRejectionRatioPSRRVSY=±18Vto±4.
5V120140dB40°C≤TA≤+125°C118dBSupplyCurrentperAmplifierISY5.
05.
7mA40°C≤TA≤+125°C6.
75mADYNAMICPERFORMANCESlewRateSRAV=1,RL=2kΩ16V/μsAV=1,RL=2kΩ15V/μsSettlingTimetsTo0.
01%,step=10V2μsGainBandwidthProductGBP10MHzPhaseMarginΦM65DegreesNOISEPERFORMANCEPeak-to-PeakNoiseenp-p0.
1Hzto10Hz76nVp-pVoltageNoiseDensityenf=1kHz1.
071.
15nV/√Hzf=10Hz1.
5nV/√HzCorrelatedCurrentNoisef=1kHz1.
9pA/√Hzf=10Hz4.
3pA/√HzUncorrelatedCurrentNoisef=1kHz2.
3pA/√Hzf=10Hz5.
3pA/√HzTotalHarmonicDistortion+NoiseTHD+NG=1,RL≥1kΩ,f=1kHz,VRMS=3V120dBChannelSeparationCSf=10kHz120dBDataSheetAD8597/AD8599Rev.
F|Page5of20ABSOLUTEMAXIMUMRATINGSTable4.
ParameterRatingSupplyVoltage±18VInputVoltageV≤VIN≤+VDifferentialInputVoltage1±1VOutputShort-CircuittoGNDIndefiniteStorageTemperatureRange65°Cto+150°COperatingTemperatureRange40°Cto+125°CLeadTemperatureRange(Soldering60sec)300°CJunctionTemperature150°C1Ifthedifferentialinputvoltageexceeds1V,limitthecurrentto5mA.
StressesatorabovethoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetotheproduct.
Thisisastressratingonly;functionaloperationoftheproductattheseoranyotherconditionsabovethoseindicatedintheoperationalsectionofthisspecificationisnotimplied.
Operationbeyondthemaximumoperatingconditionsforextendedperiodsmayaffectproductreliability.
THERMALRESISTANCEθJAisspecifiedwiththedevicesolderedonacircuitboardwithitsexposedpaddlesolderedtoapad(ifapplicable)ona4-layerJEDECstandardPCBwithzeroairflow.
Table5.
PackageTypeθJAθJCUnit8-LeadLFCSP(CP-8-13)7820°C/W8-LeadSOIC(R-8)(AD8597)14039°C/W8-LeadSOIC(R-8)(AD8599)12036°C/WPOWERSEQUENCINGApplytheopampsuppliessimultaneously.
Theopampsuppliesmustbestablebeforeanyinputsignalsareapplied.
Inanycase,theinputcurrentmustbelimitedto5mA.
ESDCAUTIONAD8597/AD8599DataSheetRev.
F|Page6of20TYPICALPERFORMANCECHARACTERISTICSTA=25°C,unlessotherwisenoted.
–75–65–55–45–35–25–15–5152535455565755706050403020100NUMBEROFAMPLIFIERSVOS(V)AD8599MEAN=8.
23STDEV=24.
47MIN=–72.
62MAX=62.
09VSY=±5V06274-001Figure4.
InputOffsetVoltageDistribution00.
21.
61.
82.
02.
41.
41.
21.
00.
40.
60.
82.
26050403020100NUMBEROFAMPLIFIERSTCVOS(V)AD8599MEAN=0.
346STDEV=0.
218MIN=0.
010MAX=1.
155VSY=±5V06274-004Figure5.
TCVOSDistribution,40°C≤TA≤+125°C00.
21.
61.
82.
02.
41.
41.
21.
00.
40.
60.
82.
26050403020100NUMBEROFAMPLIFIERSTCVOS(V)AD8599MEAN=0.
461STDEV=0.
245MIN=0.
026MAX=1.
26VSY=±5V06274-006Figure6.
TCVOSDistribution,40°C≤TA≤+85°C–75–65–55–45–35–25–15–5152535455565755706050403020100NUMBEROFAMPLIFIERSVOS(V)AD8599MEAN=7.
91STDEV=21.
89MIN=–63.
02MAX=57.
5VSY=±15V06274-002Figure7.
InputOffsetVoltageDistribution00.
21.
61.
82.
02.
41.
41.
21.
00.
40.
60.
82.
245403530252015NUMBEROFAMPLIFIERSTCVOS(V)1050AD8599MEAN=0.
765STDEV=0.
234MIN=0.
338MAX=1.
709VSY=±15V06274-007Figure8.
TCVOSDistribution,40°C≤TA≤+125°C00.
21.
61.
82.
02.
41.
41.
21.
00.
40.
60.
82.
26050403020100NUMBEROFAMPLIFIERSTCVOS(V)AD8599MEAN=0.
342STDEV=0.
221MIN=0.
013MAX=1.
239VSY=±15V06274-005Figure9.
TCVOSDistribution,40°C≤TA≤+85°CDataSheetAD8597/AD8599Rev.
F|Page7of20–5.
0–2.
502.
55.
01007550250–25–100VOS(V)VCM(V)–50–7506274-009AD8599VSY=±5VFigure10.
OffsetVoltagevs.
VCM–50–2502550350300250200150100–200IB(nA)TEMPERATURE(°C)50075100–50–100–15012506274-011AD8599VSY=±5VVCM=0VFigure11.
InputBiasCurrentvs.
Temperature50403020100–10–20–30–40–50–50–250255075100125150VOS(V)TEMPERATURE(°C)06274-062AD8597±15V±5VFigure12.
InputOffsetVoltagevs.
Temperature–15–10–5051007550250–25–100VOS(V)VCM(V)–50–75101506274-010AD8599VSY=±15VFigure13.
OffsetVoltagevs.
VCM–50–2502550350300250200150100–200IB(nA)TEMPERATURE(°C)50075100–50–100–15012506274-012AD8599VSY=±15VVCM=0VFigure14.
InputBiasCurrentvs.
Temperature350–300–250–200–150–100–50050100150200250300–350–12–10–8–6–4–2024681012IB(nA)VCM(V)06274-063AD8597VSY=±15VTA=–40°CTA=+25°CTA=+125°CTA=+85°CFigure15.
InputBiasCurrentvs.
Common-ModeVoltage(VCM)OverTemperatureAD8597/AD8599DataSheetRev.
F|Page8of20–50–2502550807060504030IOS(nA)TEMPERATURE(°C)2010751000125IOS@VSY=±15VIOS@VSY=±5V06274-013AD8599Figure16.
InputOffsetCurrentvs.
Temperature150125–50–2502550114112110108106104AVO(dB)TEMPERATURE(°C)10210075100RL=2k,VO=±2VRL=600,VO=±2V06274-015AD8599VSY=±5VFigure17.
LargeSignalVoltageGainvs.
Temperature876543210024681012141618202224262830323436ISY(mA)VSY(V)06274-064AD8597TA=+25°CTA=–40°CTA=+85°CTA=+125°CFigure18.
SupplyCurrentvs.
SupplyVoltage150100500–50–100–150–50–250255075100125IB(nA)TEMPERATURE(°C)06274-065AD8597±15V±5VFigure19.
InputOffsetCurrentvs.
Temperature150125–50–2502550120118116114112110AVO(dB)TEMPERATURE(°C)75100RL=2k,VO=±11VRL=600,VO=±11V06274-016AD8599VSY=±15VFigure20.
LargeSignalVoltageGainvs.
Temperature42–12–10–8–6–4350300250200150100IB(nA)VCM(V)500–20–3506–50–100–150–200–250–30010812TA=+25°CTA=–40°CTA=+85°CTA=+125°C06274-014AD8599VSY=±15VFigure21.
InputBiasCurrentvs.
VCMDataSheetAD8597/AD8599Rev.
F|Page9of20150125–50–2502550806040200–80OUTPUTCURRENT(mA)TEMPERATURE(°C)75100ISINK–20–40–60ISOURCE06274-017AD8599VSY=±5VFigure22.
ISCvs.
Temperature0.
0010.
010.
11101010.
1OUTPUTDROPOUTVOLTAGE(VOUT–VS)(V)IL(mA)100ISOURCEISINK06274-021AD8599VSY=±5VFigure23.
OutputDropoutVoltagevs.
CurrentLoad–50–25025502.
52.
01.
51.
00.
50VCC–VOH(V)TEMPERATURE(°C)75100125150VCC–VOH@RL=600VCC–VOH@RL=2k06274-027AD8599VSY=±5VFigure24.
OutputSaturationVoltagevs.
TemperatureISINK150125–50–2502550806040200–80OUTPUTCURRENT(mA)TEMPERATURE(°C)75100–20–40–60ISOURCE06274-018AD8599VSY=±15VFigure25.
ISCvs.
Temperature0.
0010.
010.
11101010.
1OUTPUTDROPOUTVOLTAGE(VOUT–VS)(V)IL(mA)100ISOURCEISINK06274-022AD8599VSY=±15VFigure26.
OutputDropoutVoltagevs.
CurrentLoad–50–25025502.
52.
01.
51.
00.
50VCC–VOH(V)TEMPERATURE(°C)75100125150VCC–VOH@RL=600VCC–VOH@RL=2k06274-029AD8599VSY=±15VFigure27.
OutputSaturationVoltagevs.
TemperatureAD8597/AD8599DataSheetRev.
F|Page10of20–50–25025500–0.
5–1.
0–1.
5–2.
0–2.
5VEE–VOL(V)TEMPERATURE(°C)75100125150VEE–VOL@RL=600VEE–VOL@RL=2k06274-028AD8599VSY=±5VFigure28.
OutputSaturationVoltagevs.
Temperature–50050–13.
0–13.
5VOL(V)TEMPERATURE(°C)100150VOL@RL=600VOL@RL=2k–14.
0–14.
5–15.
006274-032AD8599VSY=±15VFigure29.
OutputVoltageLowvs.
Temperature100–60–40–20020406080–100–80101001k10k50kFREQUENCY(kHz)06274-066GAIN(dB)AD8597VSY=±5VRL=2kCL=200pFCL=20pF–40–20020406080100–80–100–60PHASEMARGIN(Degrees)Figure30.
GainandPhasevs.
Frequency–50–25025500–0.
5–1.
0–1.
5–2.
0–2.
5VEE–VOL(V)TEMPERATURE(°C)75100125150VEE–VOL@RL=600VEE–VOL@RL=2k06274-030AD8599VSY=±15VFigure31.
OutputSaturationVoltagevs.
Temperature–5005015.
014.
814.
614.
414.
213.
0VOH(V)TEMPERATURE(°C)100150VOH@RL=60014.
013.
813.
613.
413.
2VOH@RL=2k06274-031AD8599VSY=±15VFigure32.
OutputVoltageHighvs.
Temperature120–40–20020406080100–80–60–40–20020406080100–80–100–601101001k50k10kFREQUENCY(kHz)06274-067GAIN(dB)AD8597VSY=±15VRL=2kCL=200pFCL=20pFPHASEMARGIN(Degrees)Figure33.
GainandPhasevs.
FrequencyDataSheetAD8597/AD8599Rev.
F|Page11of201101001k50k10k50–30–20–10010203040–40GAIN(dB)FREQUENCY(kHz)06274-068AD8597AV=1AV=10AV=100VSY=±5VRL=2kΩFigure34.
Closed-LoopGainvs.
Frequency1000.
11100.
01101001k10k100kZOUT(Ω)FREQUENCY(kHz)06274-069AD8597VSY=±5VAV=–100AV=–10AV=+1Figure35.
Closed-LoopOutputImpedancevs.
Frequency11030609040701005080201101001k10kCMRR(dB)FREQUENCY(kHz)06274-070AD8597VSY=±5V,±15VFigure36.
Common-ModeRejectionRatiovs.
Frequency1101001k50k10k50–30–20–10010203040–40GAIN(dB)FREQUENCY(kHz)06274-071AD8597AV=1AV=10AV=100VSY=±15VRL=2kΩFigure37.
Closed-LoopGainvs.
Frequency1000.
11100.
01101001k10k100kZOUT(Ω)FREQUENCY(kHz)06274-072AD8597VSY=±15VAV=–100AV=–10AV=+1Figure38.
Closed-LoopOutputImpedancevs.
Frequency1001k10k100k1M12010080PSRR(dB)FREQUENCY(Hz)10M6040200–20PSRR+(dB)PSRR–(dB)06274-038AD8599±5V≤VSY≤±15VFigure39.
PowerSupplyRejectionRatiovs.
FrequencyAD8597/AD8599DataSheetRev.
F|Page12of201.
01.
11.
21.
31.
41.
51.
61.
71.
92.
01.
8908070605040300NUMBEROFAMPLIFIERSVOLTAGENOISEDENSITY(nV/Hz)2010AD8599MEAN=1.
30STDEV=0.
09MIN=1.
1MAX=1.
5±5V≤VSY≤±15V06274-039Figure40.
VoltageNoiseDensityat10Hz1101001k10010.
1FREQUENCY(Hz)10VOLTAGENOISEDENSITY(nV/Hz)06274-041AD8599±5V≤VSY≤±15VFigure41.
VoltageNoiseDensityvs.
Frequency10.
0010.
010.
10.
00010.
0010.
010.
1110THD+N(%)Vrms(V)06274-073AD8597VSY=±5VAV=+1RL=600RL=100kFigure42.
THD+Nvs.
Amplitude0.
950.
981.
011.
041.
071.
101.
131.
161.
196005004003002001000NUMBEROFAMPLIFIERSVOLTAGENOISEDENSITY(nV/Hz)AD8599MEAN=1.
07STDEV=0.
02MIN=1.
05MAX=1.
15±5V≤VSY≤±15V06274-040Figure43.
VoltageNoiseDensityat1kHz11010010k1k1001FREQUENCY(Hz)10CURRTENTNOISEDENSITY(pA/Hz)06274-042AD8599±5V≤VSY≤±15VFigure44.
CurrentNoiseDensityvs.
Frequency10.
0010.
010.
10.
00010.
0010.
010.
1110THD+N(%)Vrms(V)06274-074AD8597VSY=±15VAV=+1RL=600RL=100kFigure45.
THD+Nvs.
AmplitudeDataSheetAD8597/AD8599Rev.
F|Page13of20101001k10k100k0.
10.
010.
001THD+N(%)FREQUENCY(Hz)0.
0001RL=600RL=2k06274-043AD8599VSY=±15VVIN=3VrmsFigure46.
THD+Nvs.
Frequency–8.
6–4.
6–0.
63.
47.
411.
415.
419.
423.
4201050–5–10–15AMPLITUDE(V)TIME(s)–201527.
431.
4VSY=±15VVIN=20Vp-pAV=1RF=1kRL=2k06274-047AD8599Figure47.
LargeSignalResponse–800–400040080012001600200024008040200–20–40–60AMPLITUDE(mV)TIME(ns)–806028003200VSY=±15V,±5VVIN=100mVp-pAV=1EXTERNALCL=100pFEXTERNALRL=10k06274-046AD8599Figure48.
SmallSignalResponse101001k10k100k0.
10.
010.
001THD+N(%)FREQUENCY(Hz)0.
0001VIN=3VrmsVIN=5VrmsVIN=7Vrms06274-044AD8599VSY=±15VFigure49.
THD+Nvs.
Frequency–8.
6–4.
6–0.
63.
47.
411.
415.
419.
423.
4201050–5–10–15AMPLITUDE(V)TIME(s)–201527.
431.
4VSY=±15VVIN=20Vp-pAV=–1RF=2kRS=2kCL=0pF06274-048AD8599Figure50.
LargeSignalResponse101001k454035OVERSHOOT(%)CAPACITANCE(pF)30252015105006274-049AD8599±5V≤VSY≤±15VAV=1RL=10kFigure51.
Overshootvs.
CapacitanceAD8597/AD8599DataSheetRev.
F|Page14of20454035302520151050101001kOVERSHOOT(%)CAPACITANCE(pF)06247-077OS–AD8597VSY=±5VOS+Figure52.
Overshootvs.
CapacitiveLoad1001k10k100k1M0–20–120CHANNELSEPARATION(dB)FREQUENCY(Hz)–40–60–80–100–160–140VIN=10Vp-pVIN=20Vp-p06274-050AD8599VSY=±15VAV=100RL=1k10Vp-pVCCVEE2kCHAVCCVEE2k10k1kCHB,CHC,CHDFigure53.
ChannelSeparationvs.
Frequency0123456784002000–200AMPLITUDE(nV)TIME(Seconds)–40091006274-053AD8599±5V≤VSY≤±15VFigure54.
Peak-to-PeakNoise454035302520151050101001kOVERSHOOT(%)CAPACITANCE(pF)06247-078OS–AD8597VSY=±15VOS+Figure55.
Overshootvs.
CapacitiveLoad125–50–250255015.
012.
510.
07.
55.
0ISY(mA)TEMPERATURE(°C)75100VSY=±15V06274-020AD8599VSY=±5VFigure56.
SupplyCurrentvs.
Temperature6.
04.
55.
05.
54.
0–40–25–105203550658095110125ISY(mA)TEMPERATURE(°C)06274-075AD8597VSY=±15VVSY=±5VFigure57.
SupplyCurrentvs.
TemperatureDataSheetAD8597/AD8599Rev.
F|Page15of20FUNCTIONALOPERATIONINPUTVOLTAGERANGETheAD8597/AD8599arenotrail-to-railinputamplifiers;therefore,careisrequiredtoensurethatbothinputsdonotexceedtheinputvoltagerange.
Undernormalnegativefeedbackoperatingconditions,theamplifiercorrectsitsoutputtoensurethatthetwoinputsareatthesamevoltage.
However,ifeitherinputexceedstheinputvoltagerange,theloopopensandlargecurrentsbegintoflowthroughtheESDprotectiondiodesintheamplifier.
Thesediodesareconnectedbetweentheinputsandeachsupplyrailtoprotecttheinputtransistorsagainstanelectrostaticdischargeeventandtheyarenormallyreverse-biased.
However,iftheinputvoltageexceedsthesupplyvoltage,theseESDdiodescanbecomeforward-biased.
Withoutcurrentlimiting,excessiveamountsofcurrentmayflowthroughthesediodes,causingpermanentdamagetothedevice.
Ifinputsaresubjecttoover-voltage,insertappropriateseriesresistorstolimitthediodecurrenttolessthan5mAmaximum.
Theinputstagehastwodiodesbetweentheinputpinstoprotectthedifferentialpair.
Underhighslewrateconditions,whentheopampisconnectedasavoltagefollower,thediodesmaybecomeforward-biasedandthesourcemaytrytodrivetheoutput.
Placeasmallresistorinthefeedbackloopandinthenoninvertinginput.
Thenoiseofa100Ωresistoratroomtemperatureis~1.
25nV/√Hz,whichishigherthantheAD8597/AD8599.
Thus,thereisatradeoffbetweennoiseperformanceandprotection.
Ifpossible,placelimitingearlierinthesignalpath.
Forfurtherdetails,seetheAmplifierInputProtection…FriendorFoearticleathttp://www.
analog.
com/amplifier_input.
Becauseofthelargetransistorsusedtoachievelownoise,theinputcapacitancemayseemratherhigh.
Totakeadvantageofthelownoiseperformance,impedancearoundtheopampmustbelow,lessthan500Ω.
Undertheseconditions,thepolefromtheinputcapacitancemustbegreaterthan50MHz,whichdoesnotaffectthesignalbandwidth.
OUTPUTPHASEREVERSALOutputphasereversaloccursinsomeamplifierswhentheinputcommon-modevoltagerangeisexceeded.
Asthecommon-modevoltageismovedoutsidetheinputvoltagerange,theoutputsoftheseamplifierscansuddenlyjumpintheoppositedirectiontothesupplyrail.
Thisistheresultofthedifferentialinputpairshuttingdownthatcausesaradicalshiftingofinternalvoltagesthatresultsintheerraticoutputbehavior.
TheAD8597/AD8599amplifiersarecarefullydesignedtopreventanyoutputphasereversalifbothinputsaremaintainedwithinthespecifiedinputvoltagerange.
Ifoneorbothinputsexceedtheinputvoltagerangebutremainwithinthesupplyrails,theopampspecifications,suchasCMRR,arenotguaranteed,buttheoutputremainsclosetothecorrectvalue.
NOISEANDSOURCEIMPEDANCECONSIDERATIONSTheAD8597/AD8599ultralowvoltagenoiseof1.
1nV/√Hzisachievedwithspecialinputtransistorsrunningathighcollectorcurrent.
Therefore,itisimportanttoconsiderthetotalinput-referrednoise(eNtotal),whichincludescontributionsfromvoltagenoise(eN),currentnoise(iN),andresistornoise(√4kTRS).
eNtotal=[eN2+4kTRS+(iN*RS)2]1/2(1)whereRSisthetotalinputsourceresistance.
ThisequationisplottedfortheAD8597/AD8599inFigure58.
Becauseoptimumdcperformanceisobtainedwithmatchedsourceresistances,thiscaseisconsideredeventhoughitisclearfromEquation1thateliminatingthebalancingsourceresistancelowersthetotalnoisebyreducingthetotalRSbyafactorof2.
Ataverylowsourceresistance(RS0Ω),thevoltagenoiseoftheamplifierdominates.
Assourceresistanceincreases,theJohnsonnoiseofRSdominatesuntilahigherresistanceofRS>2kΩisachieved;thecurrentnoisecomponentislargerthantheresistornoise.
1001100.
1101001k10kTOTALNOISE(nV/Hz)SOURCERESISTANCE(Ω)06274-076TOTALNOISERESISTORNOISEONLYFigure58.
Noisevs.
SourceResistanceAD8597/AD8599DataSheetRev.
F|Page16of20TheAD8597/AD8599aretheoptimumchoiceforlownoiseperformanceifthesourceresistanceiskept0ApplicationNote,LowNoiseAmplifierSelectionGuideforOptimalNoisePerformance.
Aninterestingnoteonusingonesectionofamonolithicdualtophasecompen-satetheothersectionisintheAN-107ApplicationNote,ActiveFeedbackImprovesAmplifierPhaseAccuracy.
06247-079+–V+V–VBC1Q36Q32R1R31R32D2D31D34OUTPUTD36INVERTINGINPUT7234NONINVERTINGINPUTD1R18R19D2D41Q18Q19Q19Q27Q20Q28D42D39D40Figure59.
SimplifiedSchematicDataSheetAD8597/AD8599Rev.
F|Page17of20OUTLINEDIMENSIONSCONTROLLINGDIMENSIONSAREINMILLIMETERS;INCHDIMENSIONS(INPARENTHESES)AREROUNDED-OFFMILLIMETEREQUIVALENTSFORREFERENCEONLYANDARENOTAPPROPRIATEFORUSEINDESIGN.
COMPLIANTTOJEDECSTANDARDSMS-012-AA012407-A0.
25(0.
0098)0.
17(0.
0067)1.
27(0.
0500)0.
40(0.
0157)0.
50(0.
0196)0.
25(0.
0099)45°8°0°1.
75(0.
0688)1.
35(0.
0532)SEATINGPLANE0.
25(0.
0098)0.
10(0.
0040)41855.
00(0.
1968)4.
80(0.
1890)4.
00(0.
1574)3.
80(0.
1497)1.
27(0.
0500)BSC6.
20(0.
2441)5.
80(0.
2284)0.
51(0.
0201)0.
31(0.
0122)COPLANARITY0.
10Figure60.
8-LeadStandardSmallOutlinePackage[SOIC_N]NarrowBody(R-8)Dimensionsshowninmillimetersand(inches)81540.
300.
250.
20PIN1INDEXAREA0.
800.
750.
701.
551.
451.
351.
841.
741.
640.
203REF0.
05MAX0.
02NOM0.
50BSCEXPOSEDPAD3.
103.
00SQ2.
90FORPROPERCONNECTIONOFTHEEXPOSEDPAD,REFERTOTHEPINCONFIGURATIONANDFUNCTIONDESCRIPTIONSSECTIONOFTHISDATASHEET.
COPLANARITY0.
080.
500.
400.
30COMPLIANTTOJEDECSTANDARDSMO-229-WEED-4TOPVIEWBOTTOMVIEWSIDEVIEWPKG-00388602-10-2017-ASEATINGPLANEPIN1INDICATORAREAOPTIONS(SEEDETAILA)DETAILA(JEDEC95)Figure61.
8-LeadLeadFrameChipScalePackage[LFCSP]3mm*3mmBodyand0.
75mmPackageHeight(CP-8-13)DimensionsshowninmillimetersORDERINGGUIDEModel1TemperatureRangePackageDescriptionPackageOptionBrandingAD8597ACPZ-R240°Cto+125°C8-LeadLeadFrameChipScalePackage[LFCSP]CP-8-13A22AD8597ACPZ-REEL40°Cto+125°C8-LeadLeadFrameChipScalePackage[LFCSP]CP-8-13A22AD8597ACPZ-REEL740°Cto+125°C8-LeadLeadFrameChipScalePackage[LFCSP]CP-8-13A22AD8597ARZ40°Cto+125°C8-LeadStandardSmallOutlinePackage[SOIC_N]R-8AD8597ARZ-REEL40°Cto+125°C8-LeadStandardSmallOutlinePackage[SOIC_N]R-8AD8597ARZ-REEL740°Cto+125°C8-LeadStandardSmallOutlinePackage[SOIC_N]R-8AD8599ARZ40°Cto+125°C8-LeadStandardSmallOutlinePackage[SOIC_N]R-8AD8599ARZ-REEL40°Cto+125°C8-LeadStandardSmallOutlinePackage[SOIC_N]R-8AD8599ARZ-REEL740°Cto+125°C8-LeadStandardSmallOutlinePackage[SOIC_N]R-81Z=RoHSComplaintPart.
AD8597/AD8599DataSheetRev.
F|Page18of20NOTESDataSheetAD8597/AD8599Rev.
F|Page19of20NOTESAD8597/AD8599DataSheetRev.
F|Page20of20NOTES2007–2017AnalogDevices,Inc.
Allrightsreserved.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
D06274-0-9/17(F)