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+V S1 V IN V OUT –V S1 +V S2 Gnd 2 –V S2 Gnd 1 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. ISO124 SBOS074E–SEPTEMBER1997–REVISEDJUNE2018 ISO124±10-V Input, PrecisionIsolationAmplifier 1 1 Features 1 • 100%Testedfor High-VoltageBreakdown • Rated1500Vrms • HighIMR:140 dB at 60 Hz • MaximumNonlinearity:0.010% • BipolarOperation:V O = ±10 V • Packages:PDIP-16and SOIC-28 • Easeof Use:FixedUnityGainConfiguration • SupplyRange:±4.5-Vto ±18-V 2 Applications • IndustrialProcessControl: – TransducerIsolator,Isolatorfor Thermocouples,RTDs,PressureBridges,and FlowMeters,4-mAto 20-mALoopIsolation • GroundLoopElimination • Motorand SCRControl • PowerMonitoring • PC-BasedDataAcquisition • TestEquipment 3 Description TheISO124is a precisionisolationamplifier incorporatinga noveldutycyclemodulation- demodulationtechnique.Thesignalis transmitted digitallyacrossa 2-pFdifferentialcapacitivebarrier. Withdigitalmodulation,the barriercharacteristicsdo not affectsignalintegrity,thusresultingin excellent reliabilityand goodhigh-frequencytransientimmunity acrossthebarrier.Bothbarriercapacitorsare imbeddedin the plasticbodyof the package. The ISO124is easyto use.No externalcomponents are requiredfor operation.The key specificationsare 0.010%maximumnonlinearity,50-kHzsignal bandwidth,and 200-μV/°C V OS drift.A powersupply rangeof ±4.5 V to ±18 V, and quiescentcurrentsof ±5 mA on V S1 and ±5.5 mA on V S2 makethe ISO124 devicea goodchoicefor a widerangeof applications. The ISO124is availablein 16-pinPDIPand 28-lead SOICplasticsurface-mountpackages. DeviceInformation (1) PARTNUMBERPACKAGEBODYSIZE(NOM) ISO124 PDIP(16)17.90mm × 7.50mm SOIC(28)20.01mm × 6.61mm (1) For all availablepackages,see the packageoptionaddendum at the end of the datasheet. SimplifiedSchematic