ACS714
Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
Not for New Design
These parts are in production but have been determined to be
NOT FOR NEW DESIGN. This classification indicates that sale of
this device is currently restricted to existing customer applications.
The device should not be purchased for new design applications
because obsolescence in the near future is probable. Samples are no
longer available.
Date of status change: June 5, 2017
Recommended Substitutions:
For existing customer transition, and for new customers or new appli-
cations, use ACS724.
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, LLC reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.ACS714
Automotive Grade, Fully Integrated, Hall-Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Voltage Isolation and Low-Resistance Current Conductor
Features and Benefits Description
Low-noise analog signal path
The Allegro ACS714 provides economical and precise
Device bandwidth is set via the FILTER pin
solutions for AC or DC current sensing in automotive systems.
5 s output rise time in response to step input current
The device package allows for easy implementation by the
80 kHz bandwidth
customer. Typical applications include motor control, load
Total output error 1.5% typical, at T = 25C
A
detection and management, switch-mode power supplies, and
Small footprint, low-profile SOIC8 package
overcurrent fault protection.
1.2 m internal conductor resistance
2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
The device consists of a precise, low-offset, linear Hall circuit
5.0 V, single supply operation
with a copper conduction path located near the surface of the
66 to 185 mV/A output sensitivity
die. Applied current flowing through this copper conduction
Output voltage proportional to AC or DC currents
path generates a magnetic field which the Hall IC converts into a
Factory-trimmed for accuracy
proportional voltage. Device accuracy is optimized through the
Extremely stable output offset voltage
close proximity of the magnetic signal to the Hall transducer.
Nearly zero magnetic hysteresis
Ratiometric output from supply voltage A precise, proportional voltage is provided by the low-offset,
Operating temperature range, 40C to 150C
chopper-stabilized BiCMOS Hall IC, which is programmed
for accuracy after packaging.
TV America
Certificate Number:
The output of the device has a positive slope (>V )
IOUT(Q)
U8V 15 05 54214 038
CB 13 06 54214 026 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
Package: 8-pin SOIC (suffix LC)
this conductive path is 1.2 m typical, providing low power
loss. The thickness of the copper conductor allows survival of
the device at up to 5 overcurrent conditions. The terminals of
Continued on the next page
Not to scale
Typical Application
+5 V
8
1
VCC
IP+
V
7
OUT
2
C
VIOUT
IP+
BYP
0.1 F
I
ACS714
P
6
3
FILTER
IP
C
F
4
IP 5 1 nF
GND
Application 1. The ACS714 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
P F
is recommended for noise management, with values that
depend on the application.
ACS714-DS, Rev. 11 December 10, 2018
MCO-0000199