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Allegro MicroSystems
Allegro MicroSystems

ACS713 Datasheet

Hall Effect-Based Linear Current Sensor


ACS713 Datasheet Preview


ACS713
Fully Integrated, Hall Effect-Based Linear Current Sensor
with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
Features and Benefits
▪ Low-noise analog signal path
▪ Device –3 dB point is set via the new FILTER pin
▪ Total output error 1.5% at TA = 25°C, 4% at –40°C to 85°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
▪ 50 kHz bandwidth
▪ 133 to 185 mV/A output sensitivity
▪ 5 µs output rise time in response to step input current
▪ Output voltage proportional to sensed DC current
▪ Factory-trimmed for accuracy
▪ Extremely stable output offset voltage
▪ Nearly zero magnetic hysteresis
▪ Ratiometric output from supply voltage
Description
The Allegro® ACS713 provides economical and precise
solutions for DC current sensing in industrial, automotive,
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.
Package: 8 Lead SOIC (suffix LC)
The output of the device has a positive slope (>VIOUT(Q))
when an increasing current flows through the primary copper
www.DataSheetc4Uo.cnomduction 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
Approximate Scale 1:1
Continued on the next page…
Typical Application
ACS713-DS
1 IP+
8
VCC
2 IP+ VIOUT 7
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 sensed
current, IP , within the range specified. CF is recommended for
noise management, with values that depend on the application.
Page 1

ACS713
Fully Integrated, Hall Effect-Based Linear Current Sensor with
2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
Description (continued)
loss. The thickness of the copper conductor allows survival of
the device at up to 5× overcurrent conditions. The terminals of
the conductive path are electrically isolated from the sensor leads
(pins 5 through 8). This allows the ACS713 current sensor to be
used in applications requiring electrical isolation without the use
of opto-isolators or other costly isolation techniques.
TheACS713 is provided in a small, surface mount SOIC8 package.
The leadframe is plated with 100% matte tin, which is compatible
with standard lead (Pb) free printed circuit board assembly processes.
Internally, the device is Pb-free, except for flip-chip high-temperature
Pb‑based solder balls, currently exempt from RoHS. The device is
fully calibrated prior to shipment from the factory.
Selection Guide
Part Number
Packing*
ACS713ELCTR-20A-T Tape and reel, 3000 pieces/reel
ACS713ELCTR-30A-T Tape and reel, 3000 pieces/reel
*Contact Allegro for additional packing options.
TOP
(°C)
–40 to 85
–40 to 85
Optimized Range, IP
(A)
0 to 20
0 to 30
Sensitivity, Sens
(Typ) (mV/A)
185
133
Absolute Maximum Ratings
Characteristic
Supply Voltage
Reverse Supply Voltage
Output Voltage
Reverse Output Voltage
Output Current Source
Output Current Sink
Overcurrent Transient Tolerance
Maximum Transient Sensed Current
Nominal Operating Ambient Temperature
Maximum Junction
Storage Temperature
Symbol
VCC
VRCC
VIOUT
VRIOUT
IOUT(Source)
IOUT(Sink)
IP
IR(max)
TA
TJ(max)
Tstg
Notes
100 total pulses, 250 ms duration each, applied
at a rate of 1 pulse every 100 seconds.
Junction Temperature, TJ < TJ(max)
Range E
Rating
8
–0.1
8
–0.1
3
10
60
100
–40 to 85
165
–65 to 170
Units
V
V
V
V
mA
mA
A
A
ºC
ºC
ºC
TÜV America
Certificate Number:
U8V 06 05 54214 010
Parameter
Fire and Electric Shock
Specification
CAN/CSA-C22.2 No. 60950-1-03
UL 60950-1:2003
EN 60950-1:2001
Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Page 2

ACS713
Fully Integrated, Hall Effect-Based Linear Current Sensor with
2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
Functional Block Diagram
VCC
(Pin 8)
IP+
(Pin 1)
IP+
(Pin 2)
Hall Current
Drive
IP–
(Pin 3)
IP–
(Pin 4)
Sense Temperature
Coefficient Trim
Sense
Trim
Signal
Recovery
0 Ampere
Offset Adjust
GND
(Pin 5)
FILTER
(Pin 6)
+5 V
VIOUT
(Pin 7)
Pin-out Diagram
Terminal List Table
Number
Name
1 and 2
IP+
3 and 4
IP–
5 GND
6 FILTER
7 VIOUT
8 VCC
IP+ 1
IP+ 2
IP– 3
IP– 4
8 VCC
7 VIOUT
6 FILTER
5 GND
Description
Input terminals for current being sensed; fused internally
Output terminals for current being sensed; fused internally
Signal ground terminal
Terminal for external capacitor that sets bandwidth
Analog output signal
Device power supply terminal
Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Page 3
Part Number ACS713
Manufactur Allegro MicroSystems
Description Hall Effect-Based Linear Current Sensor
Total Page 10 Pages
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