ACS722 Datasheet | Allegro MicroSystems

High Accuracy, Galvanically Isolated Current Sensor IC with Small Footprint SOIC8 Package Features AND BENEFITS - Patented integrated digital temperature pensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor - UL60950-1 (ed. 2) certified - Dielectric Strength Voltage = 2.4 k Vrms - Basic Isolation Working Voltage = 420 Vpk/297 Vrms - Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques - Pin-selectable band width: 80 k Hz for high bandwidth applications or 20 k Hz for low noise performance - 0.65 mΩ primary conductor resistance for low power loss and high inrush current withstand capability - Small footprint, low-profile SOIC8 package suitable for space-constrained applications - Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients - 3 to 3.6 V, single supply operation Continued on the next page… TÜV America Certificate Number: U8V 18 02 54214 041 CB 14 11 54214 031 Package: 8-pin SOIC (suff ix LC) UL Certified File No.: US-32848-UL Not to scale DESCRIPTION The Allegro™ ACS722 current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, mercial, and munications systems. The small package is ideal for space constrained applications while also saving costs due to reduced board area. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic...