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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 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
Typical Application
ACS713-DS, Rev. 12
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.
Page 1

ACS713
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
Description (continued)
the device at up to 5× overcurrent conditions. The terminals of the
conductive path are electrically isolated from the signal leads (pins
5 through 8). This allows the ACS713 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.
TA
(°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
Reinforced Isolation Voltage
Basic Isolation Voltage
Output Current Source
Output Current Sink
Overcurrent Transient Tolerance
Nominal Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
VCC
VRCC
VIOUT
VRIOUT
VISO
VISO(bsc)
IOUT(Source)
IOUT(Sink)
IP
TA
TJ(max)
Tstg
Notes
Pins 1-4 and 5-8; 60 Hz, 1 minute, TA=25°C
Maximum working voltage according to
UL60950-1
Pins 1-4 and 5-8; 60 Hz, 1 minute, TA=25°C
Maximum working voltage according to
UL60950-1
1 pulse, 100 ms
Range E
Rating
8
–0.1
8
–0.1
2100
184
1500
354
3
10
100
–40 to 85
165
–65 to 170
Units
V
V
V
V
VAC
Vpeak
VAC
Vpeak
mA
mA
A
ºC
ºC
ºC
Isolation Characteristics
Characteristic
Symbol
Notes
Dielectric Strength Test Voltage*
VISO
Agency type-tested for 60 seconds per
UL standard 60950-1, 1st Edition
Working Voltage for Basic Isolation
VWFSI
For basic (single) isolation per UL standard
60950-1, 1st Edition
Working Voltage for Reinforced Isolation
VWFRI
For reinforced (double) isolation per UL standard
60950-1, 1st Edition
* Allegro does not conduct 60-second testing. It is done only during the UL certification process.
Rating
2100
354
184
Unit
VAC
VDC or Vpk
VDC or Vpk
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.
2
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 IC
with 2.1 kVRMS 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 sampled; fused internally
Output terminals for current being sampled; fused internally
Signal ground terminal
Terminal for external capacitor that sets bandwidth
Analog output signal
Device power supply terminal
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Page 3

ACS713
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
COMMON OPERATING CHARACTERISTICS1 over full range of TA, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min. Typ.
Max. Units
ELECTRICAL CHARACTERISTICS
Supply Voltage
Supply Current
Output Capacitance Load
Output Resistive Load
Primary Conductor Resistance
Rise Time
Frequency Bandwidth
Nonlinearity
Zero Current Output Voltage
VCC
ICC
CLOAD
RLOAD
RPRIMARY
tr
f
ELIN
VIOUT(Q)
VCC = 5.0 V, output open
VIOUT to GND
VIOUT to GND
TA = 25°C
IP = IP(max), TA = 25°C, COUT = 10 nF
–3 dB, TA = 25°C; IP is 10 A peak-to-peak
Over full range of IP, IP applied for 5 ms
Unidirectional; IP = 0 A, TA = 25°C
4.5 5.0 5.5
– 10 13
– – 10
4.7 –
– 1.2 –
– 3.5 –
– 80 –
– ±1.5
VCC ×
0.1
V
mA
nF
kΩ
mΩ
μs
kHz
%
V
Power-On Time
Magnetic Coupling2
tPO
Output reaches 90% of steady-state level, no capacitor on
FILTER pin; TJ = 25; 20 A present on leadframe
– 35 – μs
– 12 – G/A
Internal Filter Resistance3
RF(INT)
1.7 kΩ
1Device may be operated at higher primary current levels, IP, and ambient, TA, and internal leadframe temperatures, TA, provided that the Maximum
Junction Temperature, TJ(max), is not exceeded.
21G = 0.1 mT.
3RF(INT) forms an RC circuit via the FILTER pin.
COMMON THERMAL CHARACTERISTICS1
Min. Typ. Max. Units
Operating Internal Leadframe Temperature TA E range
–40 –
85 °C
Value Units
Junction-to-Lead Thermal Resistance2
Junction-to-Ambient Thermal Resistance2,3
RθJL
RθJA
Mounted on the Allegro ASEK 713 evaluation board
Mounted on the Allegro 85-0322 evaluation board, includes the power
consumed by the board
5 °C/W
23 °C/W
1Additional thermal information is available on the Allegro website.
2The Allegro evaluation board has 1500 mm2 of 2 oz. copper on each side, connected to pins 1 and 2, and to pins 3 and 4, with thermal vias connect-
ing the layers. Performance values include the power consumed by the PCB. Further details on the board are available from the Frequently Asked
Questions document on our website. Further information about board design and thermal performance also can be found in the Applications Informa-
tion section of this datasheet.
3RθJA values shown in this table are typical values, measured on the Allegro evaluation board. The actual thermal performance depends on the actual
application board design, the airflow in the application, and thermal interactions between the device and surrounding components through the PCB and
the ambient air. To improve thermal performance, see our applications material on the Allegro website.
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Page 4
Part Number ACS713
Manufactur Allegro MicroSystems
Description Hall Effect-Based Linear Current Sensor
Total Page 14 Pages
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