ASEK712ELC-30A-T-DK

IP+

IP+

IP–

IP–

I

P

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

Application 1. The ACS712 outputs an analog signal, V

OUT 

that varies linearly with the uni- or bi-directional AC or DC 
primary sampled current, I

, within the range specified. C

F

 

is recommended for noise management, with values that 
depend on the application.

ACS712

Description

The Allegro

 ACS712 provides economical and precise 

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, 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 (>V

IOUT(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 

ACS712-DS, Rev. 15

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 T

= 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
▪  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 IC 

with 2.1 kVRMS 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

ASEK712ELC-30A-T-DK Information:
Part No.
ASEK712ELC-30A-T-DK

RFQ

Description
BOARD EVAL FOR ASEK712ELC-30A
File Size
658620 bytes
Page Size
612 x 792 pts (letter)
All Pages
15
Manufacturer
Allegro MicroSystems, LLC.
Homepage
http://www.allegromicro.com/
Logo
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