ACS754CurrentSensorsFeaturesandBenefitsMonolithicHallICforhighreliabilitySingle+5Vsupply3kVRMSisolationvoltagebetweenterminals4/5andpins1/2/335kHzbandwidthAutomotivetemperaturerangeEnd-of-linefactory-trimmedforgainandoffsetUltra-lowpowerloss:100 internalconductorresistanceRatiometricoutputfromsupplyvoltageExtremelystableoutputoffsetvoltageSmallpackagesize,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 ,providinglowpowerloss.Thethicknessofthecopperconductorallowssurvivalofthedeviceatupto5xovercurrentconditions.Theterminalsoftheconductivepathareelectricallyisolatedfromthesensorleads(pins1through3).ThisallowstheACS75xfamilyofsensorstobeusedinapplicationsrequiringelectricalisolationwithouttheuseofopto-isolatorsorothercostlyisolationtechniques.Thedeviceisfullycalibratedpriortoshipmentfromthefactory.TheACS75xfamilyislead-free.Allleadsarecoatedwith100%mattetin,andthereisnoleadinsidethepackage.Theheavygaugeleadframeismadeofoxygen-freecopper.FunctionalBlockDiagram PartNumberPackageTypeRoHSTemperatureCompliantACS754SCB-100-PFF5-leadCB Yes-20 C to 85 CACS754SCB-200-PFF 5-leadCB Yes-20 C to 85 CACS754KCB-150-PFF 5-leadCB Yes-40 C to 125 CACS754LCB-050-PFF 5-leadCB Yes-40 C to 150 CACS754LCB-100-PFF 5-leadCB Yes-40 C to 150 CACS754LCB-130-PFF 5-leadCB Yes-40 C to 150 CACS754電流傳感器功能及優(yōu)點高可靠性的單片霍爾IC+5V單電源端子4/5和引腳1/2/3之間的隔離電壓高達3kVRMS35kHz帶寬汽車溫度范圍下線工廠校準(zhǔn)增益和偏移超低功率損耗：100 內(nèi)部導(dǎo)體電阻電源電壓的成比例輸出極度穩(wěn)定的輸出偏移電壓小型封裝尺寸，安裝簡便輸出與交流和直流電流成比例描述AllegroACS75x系列電流傳感器可為工業(yè)、汽車、商業(yè)和通信系統(tǒng)領(lǐng)域提供經(jīng)濟實惠、測量精確的電流檢測解決方案。該器件采用封裝設(shè)計，便于客戶使用。典型應(yīng)用包括電動機控制、負(fù)載檢測及管理、電源和過流保護。該器件由一個低偏移的精密線性霍爾傳感器電路組成，其銅制的電流路徑靠近晶片的表面。流過該電流路徑的電流會產(chǎn)生一個磁場，該磁場可被集成霍爾IC檢測并轉(zhuǎn)換成同比例的電壓輸出。通過將磁信號盡量接近霍爾傳感器，器件的精確度已得到極大的優(yōu)化。一個精確的成比例的電壓由低偏移、斬波穩(wěn)定的BiCMOS霍爾IC提供，并且該IC出廠前已對精確度設(shè)定。當(dāng)遞增式電流流過用作電流檢測通路的主電流路徑（從端子4到端子5）時，器件的輸出具有正斜率( VCC/2)。該電流路徑的內(nèi)電阻通常為100 ，功率損耗較低。銅線的厚度允許器件在高達5倍的過電流條件下工作。電流路徑的接線端與傳感器引腳（引腳1到3）之間電氣隔離。憑借上述優(yōu)點，ACS75x系列傳感器可取代光耦或其他成本高昂的隔離技術(shù)用于要求電氣隔離的應(yīng)用。器件在出廠裝運前已完全校準(zhǔn)。ACS75x系列是無鉛產(chǎn)品。所有的引腳均鍍以100%霧錫，封裝內(nèi)無鉛存在。大尺寸引腳框由無氧銅制成。