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ACS780LLRTR-050B-T Datasheet(PDF) 1 Page - Allegro MicroSystems |
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ACS780LLRTR-050B-T Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 24 page Application 1: The ACS780xLR outputs an analog signal, VOUT, that varies linearly with the bidirectional AC or DC primary current, IP, within the range specified. CF is for optimal noise management, with values that depend on the application. ACS780xLR DESCRIPTION The Allegro ACS780xLR is a fully integrated current sensor linear IC in a new core-less package designed to senseAC and DC currents up to 100 A. This automotive-grade, low-profile (1.5 mm thick) sensor IC package has a very small footprint. The Hall sensor technology also incorporates common-mode field rejection to optimize performance in the presence of interferingmagneticfieldsgeneratedbynearbycurrent-carrying conductors. Thedeviceconsistsofaprecision,low-offsetlinearHallcircuit with a copper conduction path located near the die. Applied current flowing through this copper conduction path generates a magnetic field which the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the primary conductor to the Hall transducer and factory programming of the sensitivity and quiescent output voltage at the Allegro factory. Chopper-stabilized signal path and digital temperature compensation technology also contribute to the stability of the device across the operating temperature range. High-level immunity to current conductor dV/dt and stray electricfieldsisofferedbyAllegroproprietaryintegratedshield technology, for low-output voltage ripple and low-offset drift in high-side, high-voltage applications. Theoutputofthedevicehasapositiveslope(>VCC/2)whenan increasingcurrentflowsthroughtheprimarycopperconduction ACS780xLR-DS High-Precision Linear Hall-Effect-Based Current Sensor IC With 200 µΩ Current Conductor Continued on the next page… Typical Application 5 V VOUT RF CF CBYP 0.1 µF IP+ IP– GND ACS780xLR VOUT VCC IP 2 5 6 3 1 FEATURES AND BENEFITS ▪Core-less,micro-sized,100Acontinuouscurrentpackage ▪Ultra-lowpowerloss:200µΩinternalconductor resistance ▪Immunitytocommon-modefieldinterference ▪Greatlyimprovedtotaloutputerrorthroughdigitally programmed and compensated gain and offset over the full operating temperature range ▪Industry-leadingnoiseperformancethroughproprietary amplifier and filter design techniques ▪Integratedshieldgreatlyreducescapacitivecouplingfrom current conductor to die due to high dV/dt signals, and prevents offset drift in high-side, high-voltage applications ▪MonolithicHallICforhighreliability ▪4.5to5.5V,singlesupplyoperation ▪120kHztypicalbandwidth ▪3.6µsoutputrisetimeinresponsetostepinputcurrent ▪OutputvoltageproportionaltoACorDCcurrents ▪Factory-trimmedforaccuracy ▪Extremelystablequiescentoutputvoltage ▪AEC-Q100automotivequalification PACKAGE: 7-pin PSOF package (suffix LR) Not to scale |
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