Allegro MicroSystemsACS711KEXLT-31AB-TCurrent Sensors

The Allegro Microsystems open loop current sensor provides economical and precise solutions for AC or DC current sensing in <100V audio, communications systems, and white goods. The device package allows for easy implementation by the customer. The device consists of a 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 optimised through the close proximity of the magnetic signal to the Hall transducer.

Features and benefits:
• No external sense resistor required; single package solution
• Reduced power loss:
     0.6 mΩ internal conductor resistance on EX package
     1.2 mΩ internal conductor resistance on LC package
• Economical low- and high-side current sensing
• Output voltage proportional to AC or DC currents
• ±12.5 A and ±25 A full-scale sensing ranges on LC package
• ±15.5 A and ±31 A full-scale sensing ranges on EX package
• Overcurrent FAULT trips and latches at 100% of full-scale current
• Low-noise analog signal path
• 100 kHz bandwidth
• Small footprint, low-profile SOIC8 and QFN packages
• 3 to 5.5 V single supply operation
• Integrated electrostatic shield for output stability
• Factory-trimmed for accuracy
• Extremely stable output offset voltage
• Zero magnetic hysteresis
• Ratiometric output from supply voltage

Applications:
• Circuit protection
• Current monitoring
• Motor and inverter control

This ACS711KEXLT-31AB-T current sensor from Allegro MicroSystems is available in a variety of types for measuring AC and DC current flows in your electronic circuit. It has an operating frequency of 100 kHz. This device has a minimum operating supply voltage of 3 V and a maximum of 5.5 V. This part has a temperature range of -40 °C to 125 °C. Tape and reel packaging will encase this product during shipment, in order to ensure safe delivery and enable quick mounting of components.