MAX4080FASA中文资料

GeneralDescriptionTheMAX4080/MAX4081arehigh-side,current-senseamplifierswithaninputvoltagerangethatextendsfrom4.5Vto76Vmakingthemidealfortelecom,automotive,backplane,andothersystemswherehigh-voltagecur-rentmonitoringiscritical.TheMAX4080isdesignedforunidirectionalcurrent-senseapplicationsandtheMAX4081allowsbidirectionalcurrentsensing.TheMAX4081singleoutputpincontinuouslymonitorsthetransitionfromchargetodischargeandavoidstheneedforaseparatepolarityoutput.TheMAX4081requiresanexternalreferencetosetthezero-currentoutputlevel(VSENSE=0V).Thechargingcurrentisrep-resentedbyanoutputvoltagefromVREFtoVCC,whiledischargecurrentisgivenfromVREFtoGND.Formaximumversatility,the76Vinputvoltagerangeappliesindependentlytobothsupplyvoltage(VCC)andcommon-modeinputvoltage(VRS+).High-sidecurrentmonitoringdoesnotinterferewiththegroundpathoftheloadbeingmeasured,makingtheMAX4080/MAX4081particularlyusefulinawiderangeofhigh-voltagesystems.Thecombinationofthreegainversions(5V/V,20V/V,60V/V=F,T,Ssuffix)andauser-selectable,externalsenseresistorsetsthefull-scalecurrentreadinganditsproportionaloutputvoltage.TheMAX4080/MAX4081offerahighlevelofintegration,resultinginasimple,accurate,andcompactcurrent-sensesolution.TheMAX4080/MAX4081operatefroma4.5Vto76Vsin-glesupplyanddrawonly75µAofsupplycurrent.Thesedevicesarespecifiedovertheautomotiveoperatingtemperaturerange(-40°Cto+125°C)andareavailableinaspace-saving8-pinµMAXorSOpackage.ApplicationsAutomotive(12V,24V,or42VBatteries)48VTelecomandBackplaneCurrentMeasurementBidirectionalMotorControlPower-ManagementSystemsAvalanchePhotodiodeandPIN-DiodeCurrentMonitoringGeneralSystem/Board-LevelCurrentSensingPrecisionHigh-VoltageCurrentSourcesFeatures♦Wide4.5Vto76VInputCommon-ModeRange♦BidirectionalorUnidirectionalISENSE♦Low-Cost,Compact,Current-SenseSolution♦ThreeGainVersionsAvailable5V/V(MAX4080F/MAX4081F)20V/V(MAX4080T/MAX4081T)60V/V(MAX4080S/MAX4081S)♦±0.1%Full-ScaleAccuracy♦Low100µVInputOffsetVoltage♦IndependentOperatingSupplyVoltage♦75µASupplyCurrent(MAX4080)♦ReferenceInputforBidirectionalOUT(MAX4081)♦AvailableinaSpace-Saving8-PinµMAXPackageMAX4080/MAX408176V,High-Side,Current-SenseAmplifierswithVoltageOutput________________________________________________________________MaximIntegratedProducts1N.C.OUTGND1287RS-N.C.VCCN.C.RS+μMAX/SOTOPVIEW3465MAX4080REF1BOUTGND1287RS-REF1AVCCN.C.RS+μMAX/SO3465MAX4081PinConfigurationsOrderingInformation19-2562;Rev0;10/02Forpricing,delivery,andorderinginformation,pleasecontactMaximDirectat1-888-629-4642,orvisitMaxim’swebsiteat°Cto+125°C8µMAXMAX4080FASA-40°Cto+125°C8SOMAX4080TAUA-40°Cto+125°C8µMAXMAX4080TASA-40°Cto+125°C8SOMAX4080SAUA-40°Cto+125°C8µMAXMAX4080SASA-40°Cto+125°C8SOMAX4081FAUA-40°Cto+125°C8µMAXMAX4081FASA-40°Cto+125°C8SOMAX4081TAUA-40°Cto+125°C8µMAXMAX4081TASA-40°Cto+125°C8SOMAX4081SAUA-40°Cto+125°C8µMAXMAX4081SASA-40°Cto+125°C8SOSelectorGuideappearsatendofdatasheet.MAX4080/MAX408176V,High-Side,Current-SenseAmplifierswithVoltageOutput2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSStressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.VCCtoGND............................................................-0.3Vto+80VRS+,RS-toGND....................................................-0.3Vto+80VOUTtoGND.............-0.3Vtothelesserof+18Vor(VCC+0.3V)REF1A,REF1BtoGND(MAX4081Only)....-0.3Vtothelesserof+18Vor(VCC+0.3V)OutputShortCircuittoGND.......................................ContinuousDifferentialInputVoltage(VRS+-VRS-)...............................±80VCurrentintoAnyPin..........................................................±20mAContinuousPowerDissipation(TA=+70°C)8-PinµMAX(derate4.5mW/°Cabove+70°C).............362mW8-PinSO(derate5.88mW/°Cabove+70°C)................471mWOperatingTemperatureRange.........................-40°Cto+125°CJunctionTemperature......................................................+150°CStorageTemperatureRange.............................-65°Cto+150°CLeadTemperature(soldering,10s).................................+300°CDCELECTRICALCHARACTERISTICS(VCC=VRS+=4.5Vto76V,VREF1A=VREF1B=5V(MAX4081only),VSENSE=(VRS+-VRS-)=0V,RLOAD=100kΩ,TA=TMINtoTMAX,unlessotherwisenoted.TypicalvaluesareatTA=+25°C.)(Notes1,2)PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOperatingVoltageRangeVCCInferredfromPSRRtest4.576VCommon-ModeRangeCMVRInferredfromCMRRtest(Note3)4.576VMAX408075190SupplyCurrentICCVCC=VRS+=76V,noloadMAX4081103190µALeakageCurrentIRS+,IRS-VCC=0V,VRS+=76V0.012µAInputBiasCurrentIRS+,IRS-VCC=VRS+=76V512µAMAX4080F/MAX4081F±1000MAX4080T/MAX4081T±250Full-ScaleSenseVoltage(Note4)VSENSEMAX4080S/MAX4081S±100mVMAX4080F/MAX4081F5MAX4080T/MAX4081T20GainAVMAX408