ADIADE7816精密多路电表解决方案

第第页ADIADE7816精密多路电表解决方案ADI公司的ADE7816是精密的多路(六个电流通路,一个电压通路)电表集成电路,可以测量线路电压和电流,计算有功和无功能量以及瞬态rms电压和电流.器件集成了7个sigmadelta()ADC和高精度能量测量内核,动态范围1000:1时的精度误差小于0.1%,支持电流变压器和Rogowski线圈传感器,工作带宽2kHz,所有六个通路都能测量角度.工作电压3.3V.本文介绍了ADE7816主要特性,功能方框图,测试电路图,信号流程框图,有功和无功功率信号流程框图,以及ADE7816评估板主要特性和电路图.TheADE7816isahighlyaccurate,multichannelmeteringdevicethatiscapableofmeasuringonevoltagechannelanduptosixcurrentchannels.Itmeasureslinevoltageandcurrentandcalculatesactiveandreactiveenergy,aswellasinstantaneousrmsvoltageandcurrent.Thedeviceincorporatessevensigmadelta()ADCswithahighaccuracyenergymeasurementcore.Thesixcurrentinputchannelsallowmultipleloadstobemeasuredsimultaneously.Thevoltagechannelandthesixcurrentchannelseachhaveacompletesignalpathallowingforafullrangeofmeasurements.Eachinputchannelsupportsaflexiblegainstageandissuitableforusewithcurrenttransformers(CTs).SixonchipdigitalintegratorsfacilitatetheuseoftheRogowskicoilsensors.TheADE7816providesaccesstoonchipmeterregistersviaeithertheSPIorI2Cinterface.Adedicatedhighspeedinterface,thehighspeeddatacapture(HSDC)port,canbeusedinconjunctionwithI2CtoprovideaccesstorealtimeADCoutputinformation.Afullrangeofpowerqualityinformation,suchasovercurrent,overvoltage,peak,andsagdetection,isaccessibleviathetwoexternalinterruptpins,andIRQ0IRQ1.TheADE7816energymeteringICoperatesfroma3.3Vsupplyvoltageandisavailableina40leadLFCSPthatisPbfreeandRoHScompliant.ADE7816主要特性:Measuresactiveandreactiveenergy,sampledwaveforms,andcurrentandvoltagerms6currentinputchannelsand1voltagechannel0.1%errorinactiveandreactiveenergyoveradynamicrangeof1000:1SupportscurrenttransformerandRogowskicoilsensorsProvidesinstantaneouscurrentandvoltagereadingsAnglemeasurementsonall6channels2kHzbandwidthoperationReference:1.2V(drift10ppm/Ctypical)withexternaloverdrivecapabilityFlexibleI2C,SPI,andHSDCserialinterfacesADE7816评估板TheADE7816evaluationkitincludesanevaluationboardthatallowstheperformanceoftheADE78166channelenergymeasurementICtobeevaluated.TheADE7816evaluationkitincludesevaluationsoftware,writteninLabVIEW,thatprovidesaccesstotheregistersoftheADE7816usingaPCinterface.ThisdocumentprovidesinformationtoassisttheuserinevaluatingtheADE7816.CompletespecificationsfortheADE7816areavailableintheADE7816datasheetavailablefromAnalogDevices,Inc.,andshouldbeconsultedinconjunctionwiththisuserguidewhenusingtheevaluationboard.ADE7816评估板主要特性:Evaluationboardtoimplementafullyfunctional6channelenergymeterAccompanyingPCbasedLabVIEWsoftwareEasyconnectionofexternaltransducersviascrew