ACS71240 Datasheet (data sheet) PDF





ACS71240 Datasheet, Galvanically Isolated Current Sensor IC

ACS71240   ACS71240  

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ACS71240 Automotive-Grade, Galvanically Isolated Current Sensor IC with Common -Mode Field Rejection and Overcurrent D etection in Small Footprint Low-Profile Packages FEATURES AND BENEFITS • A EC-Q100 automotive qualified • Diffe rential Hall sensing rejects common-mod e fields • Integrated shield virtual ly eliminates capacitive coupling from current conductor to die, greatly suppr essing output noise due to high dv/dt t ransients • Industry-leading noise p erformance with greatly improved bandwi dth through proprietary amplifier and f ilter design techniques • High bandw idth 120 kHz analog output for faster r esponse times in control applicatio

ACS71240 Datasheet, Galvanically Isolated Current Sensor IC

ACS71240   ACS71240  
ns • Patented integrated digital temp erature compensation circuitry allows f or near closed-loop accuracy over tempe rature in an open loop sensor • Sing le supply operation with nonratiometric output at 3.3 and 5 V options • Ove rcurrent FAULT available between 50% an d 200% IP with 1.5 µs (typ) response time • Non-ratiometric output provid es immunity to noisy supplies • Smal l footprint QFN-12 with wettable flank and SOIC-8 suitable for space-constrain ed automotive applications • 0.6 mΩ (QFN-12) or 1.2 mΩ (SOIC-8) primary c onductor resistance for low power loss and high inrush current withstand capab ility • UL certified package (SOIC-8 only) for voltage isolation PACKAGES: 12-contact QFN with wettable flank 8- pin SOIC 3 mm × 3 mm × 0.75 mm with internally fused path (EXB package) N ot to scale (LCB package) DESCRIPTION The Allegro™ ACS71240 current sensor IC is an economical and precise solutio n forAC or DC current sensing in indust rial, automotive, commercial, and commu nications applications. The device cons ists of a precise, low-offset linear Ha ll sensor circuit with a copper conduct ion path located near the surface of th e die. Applied current flowing through this copper path generates a magnetic f ield which is sensed by the integrated Hall IC and converted into a propo








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