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ACS711-Datasheet

3.0V~5.5V工作的线性电流霍尔传感器

ACS711-Datasheet

ACS711

Hall Effect Linear Current Sensor with Overcurrent

Fault Output for <100 V Isolation Applications

Features and Benefits

No external sense resistor required; single package solution Reduced Power Loss:

Description

The Allegro® ACS711 provides economical and precise solutions for AC or DC current sensing in <100 V audio, communications systems, and white goods. The device package allows for easy implementation by the customer. Typical applications include circuit protection, current monitoring, and motor and inverter control.

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 optimized through the close proximity of the magnetic signal to the Hall transducer.

The output of the device has a positive slope proportional to the current flow from IP+ to IP– (pins 1 and 2, to pins 3 and 4). The internal resistance of this conductive path is 0.6 mΩ for the EX package, and 1.2 mΩ for the LC package, providing a non-intrusive measurement interface that saves power in applications that require energy efficiency.

The ACS711 is optimized for low-side current sensing applications, although the terminals of the conductive path are electrically isolated from the sensor IC leads, providing sufficient internal creepage and clearance dimensions for a low AC or DC working voltage applications. The thickness

ACS711-Datasheet

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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 ¯F ¯A ¯U ¯L ¯T 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 3.0 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

Packages:

ACS711-Datasheet

ACS711-Datasheet

ACS711-Datasheet

ACS711-Datasheet

8-pin SOICN

with internally fused path

(LC package)

12-contact QFN3 mm × 3 mm × 0.75 mm

(EX package)

Approximate Scale 1:1

Typical Application

Application 1. The ACS711 outputs an analog signal, VIOUT , that varies linearly with the

¯¯¯¯bi-directional AC or DC primary current, IP , within the range specified. The ¯F ¯A ¯U ¯L ¯T pin trips

when I reaches ±100% of its full-scale current.

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