MAX5481EUD中文资料

GeneralDescriptionTheMAX5481–MAX548410-bit(1024-tap)nonvolatile,linear-taper,programmablevoltage-dividersandvari-ableresistorsperformthefunctionofamechanicalpotentiometer,butreplacethemechanicswithapin-configurable3-wireserialSPI™-compatibleinterfaceorup/downdigitalinterface.TheMAX5481/MAX5482are3-terminalvoltage-dividersandtheMAX5483/MAX5484are2-terminalvariableresistors.TheMAX5481–MAX5484featureaninternal,non-volatile,electricallyerasableprogrammableread-onlymemory(EEPROM)thatstoresthewiperpositionforini-tializationduringpower-up.The3-wireSPI-compatibleserialinterfaceallowscommunicationatdataratesupto7MHz.Apin-selectableup/downdigitalinterfaceisalsoavailable.TheMAX5481–MAX5484areidealforapplicationsrequiringdigitallycontrolledpotentiometers.Twoend-to-endresistancevaluesareavailable(10kΩand50kΩ)inavoltage-divideroravariable-resistorconfiguration(seetheSelectorGuide).Thenominalresistortemperaturecoefficientis35ppm/°Cend-to-end,andonly5ppm/°Cratiometric,makingthesedevicesidealforapplicationsrequiringlow-temperature-coefficientvoltage-dividers,suchaslow-drift,programmablegain-amplifiers.TheMAX5481–MAX5484operatewitheithera+2.7Vto+5.25Vsinglepowersupplyor±2.5Vdualpowersup-plies.Thesedevicesconsume400µA(max)ofsupplycurrentwhenwritingdatatothenonvolatilememoryand1.0µA(max)ofstandbysupplycurrent.TheMAX5481–MAX5484areavailableinaspace-saving(3mmx3mm),16-pinTQFN,ora14-pinTSSOPpack-ageandarespecifiedovertheextended(-40°Cto+85°C)temperaturerange.ApplicationsFeatures♦1024TapPositions♦Power-OnRecallofWiperPositionfromNonvolatileMemory♦16-Pin(3mmx3mmx0.8mm)TQFNor14-PinTSSOPPackage♦35ppm/°CEnd-to-EndResistanceTemperatureCoefficient♦5ppm/°CRatiometricTemperatureCoefficient♦10kΩand50kΩEnd-to-EndResistorValues♦Pin-SelectableSPI-CompatibleSerialInterfaceorUp/DownDigitalInterface♦1µA(max)StandbyCurrent♦Single+2.7Vto+5.25VSupplyOperation♦Dual±2.5VSupplyOperationMAX5481–MAX548410-Bit,Nonvolatile,Linear-TaperDigitalPotentiometers________________________________________________________________MaximIntegratedProducts1OrderingInformation16151413VSSN.C.VDDGND9101112SPI/UDDIN(U/D)SCLK(INC)CS4321N.C.LWH5678N.C.N.C.N.C.VSSINTERFACETOPVIEWTQFN*SEEFUNCTIONALDIAGRAM16151413VSSN.C.VDDGND9101112SPI/UDDIN(U/D)SCLK(INC)CS4321N.C.LWD.N.C.5678N.C.N.C.N.C.VSSMAX5483MAX5484INTERFACETQFNMAX5481*MAX5482*PinConfigurations19-3708;Rev4;12/07Forpricingdelivery,andorderinginformationpleasecontactMaximDirectat1-888-629-4642,orvisitMaxim’swebsiteat*T1633F-3ACPMAX5481EUD14TSSOPU14-1—SelectorGuideappearsatendofdatasheet.SPIisatrademarkofMotorola,Inc.Note:Alldevicesarespecifiedoverthe-40°Cto+85°Coperatingtemperaturerange.*EP=Exposedpad.OrderingInformationcontinuedatendofdatasheet.PinConfigurationscontinuedatendofdatasheet.GainandOffsetAdjustmentLCDContrastAdjustmentPressureSensorsLow-DriftProgrammableGainAmplifiersMechanicalPotentiometerReplacementMAX5481–MAX548410-Bit,Nonvolatile,Linear-TaperDigitalPotentiometers2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSStressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.VDDtoGND...........................................................-0.3Vto+6.0VVSStoGND............................................................-3.5Vto+0.3VVDDtoVSS.............................................................-0.3Vto+6.0VH,L,WtoVSS..................................(VSS-0.3V)to(VDD+0.3V)CS,SCLK(INC),DIN(U/D),SPI/UDtoGND..-0.3Vto(VDD+0.3V)MaximumContinuousCurrentintoH,L,andWMAX5481/MAX5483.........................................................±5mAMAX5482/MAX5484......................................................±1.0mAMaximumCurrentintoAnyOtherPin...............................±50mAContinuousPowerDissipation(TA=+70°C)16-PinTQFN(derate17.5mW/°Cabove+70°C).....1398.6mW14-PinTSSOP(derate9.1mW/°Cabove+70°C)..........727mWOperatingTemperatureRange...........................-40°Cto+85°CJunctionTemperature......................................................+150°CStorageTemperatureRange.............................-60°Cto+150°CLeadTemperature(soldering,10s).................................+300°CELECTRICALCHARACTERISTICS(VDD=+2.7Vto+5.25V,VSS=GND=0,VH=VDD,VL=0,TA=-40°Cto+85°C,unlessotherwisenoted.TypicalvaluesareatVDD=+5.0V,TA=+25°C,unlessotherwisenoted.)(Note1)PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSDCPERFORMANCE(MAX5481/MAX5482programmablevoltage-divider)ResolutionN10BitsVDD=2.7V±2IntegralNonlinearity(Note2)INLVDD=5V±2LSBVDD=2.7V±1DifferentialNonlinearity(Note2)DNLVDD=5V±1LSBEnd-to-EndResistanceTemperatureCoefficientTCR35ppm/°CRatiometricResistanceTemperatureCoefficient5ppm/°CMAX5481-4-2.50Full-ScaleErrorFSEMAX5482-4-0.750LSBMAX5481