电能计量芯片CS5464 英文版

PreliminaryProductInformationThisdocumentcontainsinformationforanewproduct.CirrusLogicreservestherighttomodifythisproductwithoutnotice.Copyright©CirrusLogic,Inc.2006(AllRightsReserved)•EnergyDataLinearity:±0.1%ofReadingover1000:1DynamicRangeOn-chipFunctions:-InstantaneousVoltage,Current,andPower-IRMSandVRMS,Active,Reactive,andApparentPower-CurrentFaultandVoltageSagDetect-SystemCalibrations/PhaseCompensation-TemperatureSensor-Energy-to-pulseConversion-Positive-onlyAccumulationModeMeetsAccuracySpecforIEC,ANSI,&JISLowPowerConsumptionTamperDetectionin2-WireDistributionSystemsGND-referencedSignalswithSingleSupplyOn-chip2.5VReference(25ppm/°Ctyp)PowerSupplyMonitorSimpleThree-wireDigitalSerialInterface“Auto-boot”ModefromSerialE2PROM.PowerSupplyConfigurationsVA+=+5V;AGND=0V;VD+=+3.3Vto+5VDescriptionTheCS5464isanintegratedpowermeasure-mentdevicewhichcombinesthree∆Σanalog-to-digitalconverters,powercalculationengine,energy-to-frequencyconverter,andaserialinterfaceonasinglechip.ItisdesignedtoaccuratelymeasureinstantaneouscurrentandvoltageandcalculateVRMS,IRMS,instantaneouspower,activepower,apparentpower,andreac-tivepowerforhigh-performancepowermeasurementapplications.TheCS5464isoptimizedtointerfacetoshuntre-sistorsorcurrenttransformersforcurrentmeasurement,andtoresistivedividersorpoten-tialtransformersforvoltagemeasurement.TheCS5464featuresatamperdetectionschemethatusesthelargeroftheactivepowermeasurementstoregisterenergy.Additionalfea-turesincludesystem-levelcalibration,temperaturesensor,voltagesag¤tfaultdetection,andphasecompensation.ORDERINGINFORMATIONSeePage45.VA+VD+IIN1+IIN1-VREFINVREFOUTAGNDXINXOUTCPUCLKDGNDCSSDOSDISCLKINTVoltageReferenceSystemClock/KClockGeneratorSerialInterfaceE-to-FPowerMonitorPFMONx1RESETCalibrationMODEPowerCalculationEngine4thOrder∆ΣModulatorTemperatureSensorDigitalFilterPGAHPFOptionE1E2E3VIN+VIN-2ndOrder∆ΣModulatorDigitalFilter10xHPFOptionIIN2+IIN2-DigitalFilter4thOrder∆ΣModulatorHPFOptionPGAMAR‘06DS682PP1CS54642DS682PP1TABLEOFCONTENTS1.Overview..........................................................52.PinDescription.....................................................6ClockGenerator..........................................................6ControlPinsandSerialDataI/O..............................................6AnalogInputs/Outputs......................................................6PowerSupplyConnections..................................................6TestConnections.........................................................63.Characteristics&Specifications.......................................7RecommendedOperatingConditions.................................7AnalogCharacteristics.............................................7Accuracy................................................................7AnalogInputs(AllChannels).................................................7AnalogInputs(CurrentChannels).............................................7AnalogInputs(VoltageChannel).............................................8TemperatureChannel......................................................8PowerSupplies...........................................................8VoltageReference................................................9ReferenceOutput.........................................................9ReferenceInput...........................................................9DigitalCharacteristics.............................................9MasterClockCharacteristics................................................9FilterCharacteristics.......................................................9Input/OutputCharacteristics.................................................9SwitchingCharacteristics..........................................11Start-up................................................................11SerialPortTiming........................................................11SDITiming.............................................................11SDOTiming.............................................................11Auto-BootTiming........................................................11E1,E2,andE3Timing...................................................13AbsoluteMaximumRatings........................................134.TheoryofOperation...............................................144.1DigitalFilters................................................144.2VoltageandCurrentMeasurements..............................154.3PowerMeasurements.........................................154.4TamperDetection............................................164.5LinearityPerformance.........................................165.FunctionalDescription..............................................175.1AnalogInputs................................................175.1.1VoltageChannelInput...................................175.1.2CurrentChannelInputs...................................175.2IIRFilters..............................