ACS709 - Allegro MicroSystems

ACS709 Fast Fault Response Current Sensor

TheAllegro™ ACS709 current sensor IC provides economical and precise means for current sensing applications in industrial, automotive, commercial, and communications systems. The device is offered in a small footprint surface mount package that allows easy implementation in customer applications. TheACS709 consists of a precision linear Hall sensor integrate.

Features

▪ Industry-leading noise performance with 120 kHz bandwidth through proprietary amplifier and filter design techniques ▪ Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt, and prevents offset drift in high-side applications ▪ Small footprint surface-mount QSOP24 package ▪ High isolation voltage, suitable for line-powered applications ▪ 1.1 mΩ primary conductor resistance for low power loss ▪ User-settable Overcurrent Fault level ▪ Overcurrent Fault signal typically responds to an overcurrent condition in < 2 μs ▪ Filter pin capacitor .