ACS754LCB-050-PFF 参数：ACS754电流传感器功能及优点高可靠性的单片霍尔IC+5V单电源端子4/5和引脚1/2/3之间的隔离电压高达3kVRMS35kHz带宽汽车温度范围下线工厂校准增益和偏移超低功率损耗：100 Ω内部导体电阻电源电压的成比例输出极度稳定的输出偏移电压小型封装尺寸，安装简便输出与交流和直流电流成比例ACS754CurrentSensorsThesepartsareinproductionbuthavebeendeterminedtobeNOTFORNEWDESIGNorLASTTIMEBUYdependingoncurrentrange,temperaturerating,andpackagestyle.Saleofthisdeviceiscurrentlyrestrictedtoexistingcustomerapplications.Thedeviceshouldnotbepurchasedfornewdesignapplicationsbecauseofobsolescenceinthenearfuture.Samplesarenolongeravailable.Dateofstatuschange:May4,2009.ForthedevicesonLASTTIMEBUYstatus,thedeadlineforreceiptofordersisNovember4,2009.Forexistingcustomertransition,andfornewcustomersornewapplications,refertotheACS756andACS758.FeaturesandBenefitsMonolithicHallICforhighreliabilitySingle+5 Vsupply3 kVRMSisolationvoltagebetweenterminals4/5andpins1/2/3forupto1 minute35 kHzbandwidthAutomotivetemperaturerangeEnd-of-linefactory-trimmedforgainandoffsetUltra-lowpowerloss:100 ΩinternalconductorresistanceRatiometricoutputfromsupplyvoltageExtremelystableoutputoffsetvoltageSmallpackagesize,witheasymountingcapabilityOutputproportionaltoACandDCcurrentsDescriptionTheAllegroACS75xfamilyofcurrentsensorsprovideseconomicalandprecisesolutionsforcurrentsensinginindustrial,automotive,commercial,andcommunicationssystems.Thedevicepackageallowsforeasyimplementationbythecustomer.Typicalapplicationsincludemotorcontrol,loaddetectionandmanagement,powersupplies,andovercurrentfaultprotection.Thedeviceconsistsofaprecision,low-offsetlinearHallsensorcircuitwithacopperconductionpathlocatednearthedie.AppliedcurrentflowingthroughthiscopperconductionpathgeneratesamagneticfieldwhichissensedbytheintegratedHallICandconvertedintoaproportionalvoltage.DeviceaccuracyisoptimizedthroughthecloseproximityofthemagneticsignaltotheHalltransducer.Aprecise,proportionalvoltageisprovidedbythelow-offset,chopper-stabilizedBiCMOSHallIC,whichisprogrammedforaccuracyatthefactory.Theoutputofthedevicehasapositiveslope(>VCC/2)whenanincreasingcurrentflowsthroughtheprimarycopperconductionpath(fromterminal4toterminal5),whichisthepathusedforcurrentsensing.Theinternalresistanceofthisconductivepathistypically100 Ω,providinglowpowerloss.Thethicknessofthecopperconductorallowssurvivalofthedeviceatupto5×overcurrentconditions.Theterminalsoftheconductivepathareelectricallyisolatedfromthesensorleads(pins1through3).ThisallowstheACS75xfamilyofsensorstobeusedinapplicationsrequiringelectricalisolationwithouttheuseofopto-isolatorsorothercostlyisolationtechniques.Thedeviceisfullycalibratedpriortoshipmentfromthefactory.TheACS75xfamilyislead(Pb)free.Allpinsarecoatedwith100%mattetin,andthereisnoleadinsidethepackage.Theheavygaugeleadframeismadeofoxygen-freecopper.FunctionalBlockDiagram