IP+

IP+

IP–

IP–

5

GND

2

4

1

3

ACS712

7

8

+5 V

VIOUT

V

OUT

6

FILTER

VCC

C

BYP

0.1 μF

C

F

1 nF

that varies linearly with the uni- or bi-directional AC or DC

is recommended for noise management, with values that

depend on the application.

ACS712

Description

solutions for AC or 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, switched-mode power supplies, and overcurrent

fault protection.

The device consists of a precise, low-offset, 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. A

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

chopper-stabilized BiCMOS Hall IC, which is programmed

for accuracy after packaging.

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 sensing. The internal resistance of

this conductive path is 1.2 mΩ typical, providing low power

ACS712-DS, Rev. 6

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

▪ Small footprint, low-profile SOIC8 package

▪ 1.2 mΩ internal conductor resistance

▪ 5.0 V, single supply operation

▪ 66 to 185 mV/A output sensitivity

▪ Output voltage proportional to AC or DC currents

▪ Factory-trimmed for accuracy

▪ Extremely stable output offset voltage

▪ Nearly zero magnetic hysteresis

▪ Ratiometric output from supply voltage

Fully Integrated, Hall Effect-Based Linear Current Sensor

with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor

Continued on the next page…

Approximate Scale 1:1

Package: 8 Lead SOIC (suffix LC)

Typical Application

TÜV America

Certificate Number:

U8V 06 05 54214 010