ACS720 Datasheet | Allegro MicroSystems

FEATURES AND BENEFITS - Differential current sensing cancels mon mode fields, simplifying PCB layout - Two user-settable faults for fast short-circuit protection and slower overcurrent detection - Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques - Patented integrated digital temperature pensation circuitry allows high accuracy over temperature in an open loop sensor - 1.0 mΩ primary conductor resistance for low power loss and high inrush current-withstanding capability - Small footprint, low-profile SOIC16 package suitable for space-constrained applications - Integrated shield virtually eliminates capacitive coupling from current conductor to die due to high d V/dt voltage transients - 5 V single supply operation with 0-3 V output swing - Output voltage proportional to AC or DC current - Factory-trimmed sensitivity and quiescent output voltage for improved accuracy - 3600 Vrms Dielectric Strength certified under UL60950-1 - High PSRR for noisy environments PACKAGE: 16-Pin SOICW (suffix LA) Not to scale CB Certificate Number: US-23711-A2-UL DESCRIPTION The ACS720 is a high accuracy Hall-effect-based current sensor IC with multiple programmable fault levels intended for industrial and consumer applications with a focus on motor control and power inverter stage applications. One of the key benefits of the ACS720 is to provide high isolation with a reduced bill of materials made possible by the proprietary IC SOIC16W package. The ACS720 works off of a single 5 V supply while maintaining an output voltage swing from 0 to 3 V, with a stable zero current output of 1.5 V. This allows the ACS720 to operate off of a 5 V supply while having an output which is patible with typical 3.3 V ADCs found on many MCUs. Furthermore, the ACS720’s high PSRR rejects the noise often found on the supplies in the power section of the PCB or system, maintaining high accuracy in noisy environments. The device has...