Fast Fault Response Current Sensor
ACS709
High-Bandwidth, Fast Fault Response Current Sensor IC in Thermally Enhanced Package
FEATURES AND BENEFITS
▪ Ind...
Description
ACS709
High-Bandwidth, Fast Fault Response Current Sensor IC in Thermally Enhanced Package
FEATURES AND BENEFITS
▪ 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 sets analog signal bandwidth ▪ ±2% typical output error ▪ 3 to 5.5 V, single supply operation ▪ Factory trimmed sensitivity, quiescent output voltage,
and associated temperature coefficients ▪ Chopper stabilization results in extremely stable
quiescent output voltage ▪ Ratiometric output from supply voltage
PACKAGE: 24 pin QSOP (suffix LF)
Approximate Footprint
DESCRIPTION
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 integrated circuit with a copper conduction path loca...
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