ACS713 데이터 시트보기 (PDF) - Allegro MicroSystems

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ACS713

Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor

Allegro MicroSystems 

ACS713

Fully Integrated, Hall Effect-Based Linear Current Sensor IC

with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor

Features and Benefits

▪ Low-noise analog signal path

▪ Device bandwidth is set via the new FILTER pin

▪ 5 μs output rise time in response to step input current

▪ 80 kHz bandwidth

▪ Total output error 1.5% at TA= 25°C

▪ Small footprint, low-profile SOIC8 package

▪ 1.2 mΩ internal conductor resistance

▪ 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8

▪ 5.0 V, single supply operation

▪ 133 to 185 mV/A output sensitivity

▪ Output voltage proportional to DC currents

▪ Factory-trimmed for accuracy

▪ Extremely stable output offset voltage

▪ Nearly zero magnetic hysteresis

▪ Ratiometric output from supply voltage

TÜV America

Certificate Number:

U8V 06 05 54214 010

Package: 8 Lead SOIC (suffix LC)

Description

The Allegro® ACS713 provides economical and precise

solutions for DC current sensing in industrial, commercial, and

communications systems. The device package allows for easy

implementation by the customer. Typical applications include

motor control, load detection and management, switch-mode

power supplies, and overcurrent fault protection. The device

is not intended for automotive applications.

The device consists of a precise, low-offset, linear Hall 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 the Hall IC converts into a

proportional voltage. Device accuracy is optimized through the

close proximity of the magnetic signal to the Hall transducer.

A precise, proportional voltage is provided by the low-offset,

chopper-stabilized BiCMOS Hall IC, which is programmed

for accuracy after packaging.

The output of the device has a positive slope (>VIOUT(Q))

when an increasing current flows through the primary copper

conduction path (from pins 1 and 2, to pins 3 and 4), which is

the path used for current sampling. The internal resistance of

this conductive path is 1.2 mΩ typical, providing low power

loss. The thickness of the copper conductor allows survival of

Continued on the next page…

Approximate Scale 1:1

ACS713-DS, Rev. 10

Typical Application

1 IP+

8

VCC

2 IP+

7

VIOUT

IP

ACS713

3 IP– FILTER 6

4 IP– GND 5

+5 V

VOUT

CBYP

0.1 μF

CF

Application 1. The ACS713 outputs an analog signal, VOUT .

that varies linearly with the unidirectional DC primary sampled

current, IP , within the range specified. CF is recommended for

noise management, with values that depend on the application.

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