iso224 datasheet pdf

OUTP OUTN VDD2 GND2 GND1 VCAP IN VDD1 ISO224 Isolated 4.5 V to 18 V 4.5 V to 5.5 V ADS7945 14-Bit ADC Reinforced Isolation Up to ±12 V optional optional GND1 GND2 Clamp Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty,changes,use in safety-criticalapplications, intellectualpropertymattersand otherimportantdisclaimers.PRODUCTIONDATA. ISO224 SBAS738A–JUNE2018–REVISEDOCTOBER2018 ISO224ReinforcedIsolatedAmplifier With Single-EndedInput of ±12 V and DifferentialOutputof ±4 V 1 1 Features 1 • Offeredin High-Grade(ISO224B)and Low-Grade (ISO224A)Versions • ±12-VInputVoltageRangeOptimizedfor Isolated VoltageMeasurementin IndustrialApplications • OvervoltageInputClampWith9-kVESD • ±4-V DifferentialOutputVoltageRangeWith Common-Modeat VDD2/ 2 • Low DC-ErrorOperation(ISO224B): – InputOffset:±5 mV at 25°C, ±15 μV/°C max – GainError:±0.3%at 25°C, ±35 ppm/°C max – Nonlinearity:±0.01%max,±0.1 ppm/°C typ • 4.5-Vto 18-VSingle-Supplyon High-Side • 4.5-Vto 5.5-VOperationon Low-Side • Safety-RelatedCertifications: – 7071-V PEAK ReinforcedIsolationper DIN VDE V 0884-11:2017-01 – 5000-V RMS Isolationfor 1 Minuteper UL1577 • HighCMTI(ISO224B):80 kV/μs (typ) 2 Applications • IsolatedAnalogSignalAcquisitionin: – Grid Automation – ProtectionRelays – FactoryAutomationand Control – Rail Transport – MotorDrives – PowerAnalyzers 3 Description The ISO224is a precisionisolatedamplifierwith an outputseparatedfromthe inputcircuitryby an isolationbarrierwithhighimmunityto magnetic interference.Thisbarrieris certifiedto provide reinforcedgalvanicisolationof up to 5 kV RMS with an exceptionallylonglifetimeand low powerdissipation. Whenusedwith isolatedpowersupplies,this device separatespartsof the systemthatoperateon differentcommon-modevoltagelevelsand protects lower-voltagedevicesfromdamage. Theinputof the ISO224is optimizedfor accurate sensingof ±10-Vsignalsthatare widelyusedin industrialapplications.Thedeviceoperatesof a singlesupplyon the high-side.Thisuniquefeature simplifiesthe designof the isolatedpowersupplyand reducesthe systemcost.Theintegratedhigh-side supplyvoltagedetectionfeaturesimplifiessystem leveldiagnostics.The±4-V outputof the ISO224 allowslower-costanalog-to-digitalconverters(ADCs) to be used.Thedifferentialstructureof the output supportshigh immunityto noise. TheISO224is fullyspecifiedoverthe extended industrialtemperaturerangeof –55°C to +125°C and is availablein a wide-body8-pinSOIC(DWV) package. DeviceInformation (1) DEVICENAMEPACKAGEBODYSIZE ISO224SOIC(8)5.85mm × 7.5 mm (1) For all availablepackages,see the orderableaddendumat the end of the datasheet. SimplifiedSchematic

Features

• 4.5 V to 18 V
• 4.5 V to 5.5 V
• • Offeredin High-Grade(ISO224B)and Low-Grade
• • ±12-VInputVoltageRangeOptimizedfor Isolated
• • OvervoltageInputClampWith9-kVESD
• • ±4-V DifferentialOutputVoltageRangeWith
• • Low DC-ErrorOperation(ISO224B):
• • 4.5-Vto 18-VSingle-Supplyon High-Side
• • 4.5-Vto 5.5-VOperationon Low-Side
• • Safety-RelatedCertifications:
• • HighCMTI(ISO224B):80 kV/μs (typ)
• • IsolatedAnalogSignalAcquisitionin: