COS5532MR

COS5532
www.cosine-ic.com 1Features
■Operateson±2.5Vto±18VSupplies
■GainBandwidthProduct:10MHz
■PowerBandwidth:140kHz
■SlewRate:8V/µs
■OffsetVoltage:5mV(Max.)
■QuiescentCurrent:2.8mA
■OutputDriveCapability:2kΩ,10Vrmstyp
■ExtendedTemperatureRanges
From-40°Cto+125°C
■AvailableinSOP-8/MSOP-8/DIP-8
Applications
■PrecisionInstrumentation
■ProfessionalAudio
■DACOutputAmplifier
■ActiveFilters
■LowNoiseAmplifierFrontEnd
Rev1.2
Copyright@2018CosineNanoelectronicsInc.Allrightsreserved
Theinformationprovidedhereisbelievedtobeaccurateandreliable.CosineNanoelectronicsassumes
noreliabilityforinaccuraciesandomissions.Specificationsdescribedandcontainedherearesubjected
tochangewithoutnoticeonthepurposeofimprovingthedesignandperformance.Allofthisinformation
describedhereinshouldnotbeimpliedorgrantedforanythirdparty.GeneralDescription
TheCOS5532arehighperformance,low
noiseoperationalamplifierscombining
excellentdcandaccharacteristics.They
featureverylownoise,highoutput-drive
capability,highunity-gainand
maximum-output-swingbandwidths,low
distortion,highslewrate,andoutput
short-circuitprotection.Theseoperational
amplifiersarecompensatedinternallyfor
unity-gainoperationandcanoperatefrom
±2.5to±18Vdualpowersuppliesorfrom+5V
to+36Vsinglesupplies.
PinConfiguration
36V,10MHz
Low-NoiseDualOperationalAmplifiers
COS5532
www.cosine-ic.com 21.ProductSpecification
1.1AbsoluteMaximumRatings(1)
Parameter Rating Units
PowerSupply:+Vsto-Vs 36 V
DifferentialInputVoltageRange ±30 V
InputVoltage(anyinput) ±15 V
OutputCurrent 50 mA
StorageTemperatureRange -65to150 °C
JunctionTemperature 150 °C
OperatingTemperatureRange -40to125 °C
ESDSusceptibility,HBM 2000 V
(1)Stressesexceedingtheabsolutemaximumratingsmaydamagethedevice.Thedevicemaynotfunctionorbeoperable
abovetherecommendedoperatingconditionsandstressingthepartstotheselevelsisnotrecommended.Inaddition,
extendedexposuretostressesabovetherecommendedoperatingconditionsmayaffectdevicereliability.Theabsolute
maximumratingsarestressratingsonly.
1.2ThermalData
Parameter Rating Unit
PackageThermalResistance,RθJA
(Juntion-to-ambient)155(SOP8)
206(MSOP8)
125(DIP8)°C/W
1.3RecommendedOperatingConditions
Parameter Rating Unit
DCSupplyVoltage ±2.5V~±18V V
Inputcommon-modevoltagerange -Vs+2~+Vs-2 V
Operatingambienttemperature -40to+85 °C
COS5532
www.cosine-ic.com 31.4ElectricalCharacteristics
(+VS=+15V,-VS=-15V,TA=+25°C,RL=10kΩtoVS/2,unlessotherwisenoted)
Parameter Symbol Conditions MinTypMaxUnit
InputCharacteristics
InputOffsetVoltage VOS 0.55mV
InputOffsetVoltageDrift ΔVOS/ΔT-40to125°C 2 μV/°C
InputBiasCurrent IB 200800nA
InputOffsetCurrent IOS 50200nA
Common-ModeVoltageRangeVCM ±13 V
Common-ModeRejectionRatioCMRRRs≤10kΩ 70100 dB
Open-LoopVoltageGain AOLRL≥10kΩ,VO=±10V88110 dB
RL≥2kΩ,VO=±10V 8294 dB
OutputCharacteristics
OutputVoltageSwing VO(PP)RL≥2kΩ ±12±13 V
Short-CircuitCurrent ISC 60 mA
PowerSupply
OperatingVoltageRange Vs ±2.5 ±18V
PowerSupplyRejectionRatioPSRRRs≤10kΩ 80110 dB
QuiescentCurrent/AmplifierIQ 2.83.5mA
DynamicPerformance
GainBandwidthProduct GBWPCL=100pF,RL=2kΩ 10 MHz
SlewRate SRCL=100pF,RL=2kΩ,
Av=18.0 V/μs
NoisePerformance
VoltageNoiseDensity en f=1kHz 5.0 nV/√Hz
COS5532
www.cosine-ic.com 42.0ApplicationNotes
DrivingCapacitiveLoads
Drivinglargecapacitiveloadscancausestabilityproblemsforvoltagefeedbackopamps.Asthe
loadcapacitanceincreases,thefeedbackloop’sphasemargindecreases,andtheclosedloop
bandwidthisreduced.Thisproducesgainpeakinginthefrequencyresponse,withovershootand
ringinginthestepresponse.Aunitygainbuffer(G=+1)isthemostsensitivetocapacitiveloads,but
allgainsshowthesamegeneralbehavior.
Whendrivinglargecapacitiveloadswiththeseopamps(e.g.,>100pFwhenG=+1),asmallseries
resistorattheoutput(RISOinFigure1)improvesthefeedbackloop’sphasemargin(stability)by
makingtheoutputloadresistiveathigherfrequencies.Itdoesnot,however,improvethebandwidth.
ToselectRISO,checkthefrequencyresponsepeaking(orstepresponseovershoot)onthebench.If
theresponseisreasonable,youdonotneedRISO.Otherwise,startRISOat1kΩandmodifyitsvalue
untiltheresponseisreasonable.
Figure1.IndirectlyDrivingHeavyCapacitiveLoad
AnimprovementcircuitisshowninFigure2.ItprovidesDCaccuracyaswellasACstability.RF
providestheDCaccuracybyconnectingtheinvertingsignalwiththeoutput,CFandRISOserveto
counteractthelossofphasemarginbyfeedingthehighfrequencycomponentoftheoutputsignal
backtotheamplifier’sinvertinginput,therebypreservingphasemarginintheoverallfeedbackloop.
Figure2.IndirectlyDrivingHeavyCapacitiveLoadwithDCAccuracy
COS5532
www.cosine-ic.com 5Fornon-invertingconfiguration,therearetwootherswaystoincreasethephasemargin:(a)by
increasingtheamplifier’sgainor(b)byplacingacapacitorinparallelwiththefeedbackresistorto
counteracttheparasiticcapacitanceassociatedwithinvertingnode,asshowninFigure3.
Figure3.AddingaFeedbackCapacitorintheNon-invertingConfiguration
Power-SupplyBypassingandLayout
TheCOS5532operatesfromasingle+5Vto+36Vsupplyordual±2.5Vto±18Vsupplies.For
single-supplyoperation,bypassthepowersupply+Vswitha0.1μFceramiccapacitorwhichshould
beplacedclosetothe+Vspin.Fordual-supplyoperation,boththe+Vsandthe-Vssuppliesshould
bebypassedtogroundwithseparate0.1μFceramiccapacitors.2.2μFtantalumcapacitorcanbe
addedforbetterperformance.
Thelengthofthecurrentpathisdirectlyproportionaltothemagnitudeofparasiticinductancesand
thusthehighfrequencyimpedanceofthepath.Highspeedcurrentsinaninductivegroundreturn
createanunwantedvoltagenoise.Broadgroundplaneareaswillreducetheparasiticinductance.
Thusagroundplanelayerisimportantforhighspeedcircuitdesign.
TypicalApplicationCircuits
DifferentialAmplifier
ThecircuitshowninFigure4performsthedifferentialfunction.Iftheresistorsratiosareequal(R4/
R3=R2/R1),thenVOUT=(VIP–VIN)×R2/R1+VREF.
COS5532
www.cosine-ic.com 6
Figure4.DifferentialAmplifier
LowPassActiveFilter
Whenreceivinglow-levelsignals,limitingthebandwidthoftheincomingsignalsintothesystemis
oftenrequired.ThesimplestwaytoestablishthislimitedbandwidthistoplaceanRCfilteratthe
noninvertingterminaloftheamplifier.Ifevenmoreattenuationisneeded,amultiplepolefilteris
required.TheSallen-Keyfiltercanbeusedforthistask,asFigure5.Forbestresults,theamplifier
shouldhaveabandwidththatis8to10timesthefilterfrequencybandwidth.Failuretofollowthis
guidelinecanresultinreductionofphasemargin.Thelargevaluesoffeedbackresistorscancouple
withparasiticcapacitanceandcauseundesiredeffectssuchasringingoroscillationinhigh-speed
amplifiers.Keepresistorsvalueaslowaspossibleandconsistentwithoutputloadingconsideration.
Figure5.Two-PoleLow-PassSallen-KeyActiveFilter
COS5532
www.cosine-ic.com 73.PackageInformation
3.1SOP8(PackageOutlineDimensions)
3.2MSOP8(PackageOutlineDimensions)

COS5532
www.cosine-ic.com 83.3DIP8(PackageOutlineDimensions)
4.PackageandOrderingInformation
ModelChannelOrderNumberPackage PackageOptionMarking
Information
COS55322COS5532SR SOP-8TapeandReel,3000COS5532SR
COS5532SRB SOP-8TapeandReel,4000COS5532SRB
COS5532MR MSOP-8TapeandReel,3000COS5532MR
COS5532DR DIP-8TapeandReel,1500COS5532DR
COS5532DT DIP-8 Tube,50 COS5532DT
5.RelatedParts
PartNumber Description
COS6042 24kHz,0.5μA,Nano-PowerOpAmps,1.4Vto5.5VSupply
COS8042 160MHz,5.5mA,HighSpeedOpAmps,3Vto12VSupply
COS2172 10MHz,1.2mA,RRIOOpAmps,4.5to40VSupply
COS2333 350kHz,18μA,PrecisionOpAmps,1.8to5.5VSupply,ZeroDrift,Vos<10μV COS8552 1.5MHz,55μA,PrecisionOpAmps,1.8to5.5VSupply,ZeroDrift,Vos<10μV COS2227 8MHz,1.3mA,PrecisionOpAmps,4.5to36VSupply,Vos<50μV