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PDF ACS711 Data sheet ( Hoja de datos )
| Número de pieza | ACS711 | |
| Descripción | Hall Effect Linear Current Sensor | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ACS711 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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ACS711
Hall Effect Linear Current Sensor with Overcurrent
Fault Output for <100 V Isolation Applications
Features and Benefits
▪ No external sense resistor required; single package solution
▪ Reduced Power Loss:
▫ 0.6 mΩ internal conductor resistance on EX package
▫ 1.2 mΩ internal conductor resistance on LC package
▪ Economical low- and high-side current sensing
▪ Output voltage proportional to AC or DC currents
▪ ±12.5 A and ±25 A full scale sensing ranges on LC package
▪ ±15.5 A and ±31 A full scale sensing ranges on EX package
▪ Overcurrent ¯F¯A¯¯U¯¯L¯¯T¯ trips and latches at 100% of full-scale current
▪ Low-noise analog signal path
▪ 100 kHz bandwidth
▪ Small footprint, low-profile SOIC8 and QFN packages
▪ 3.0 to 5.5 V, single supply operation
▪ Integrated electrostatic shield for output stability
▪ Factory-trimmed for accuracy
▪ Extremely stable output offset voltage
▪ Zero magnetic hysteresis
▪ Ratiometric output from supply voltage
Packages:
8-pin SOICN
with internally fused path
(LC package)
12-contact QFN
3 mm × 3 mm × 0.75 mm
(EX package)
Description
The Allegro™ ACS711 provides economical and precise
solutions for AC or DC current sensing in <100 V audio,
communications systems, and white goods.The device package
allows for easy implementation by the customer. Typical
applications include circuit protection, current monitoring,
and motor and inverter control.
The device consists of a 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.
The output of the device has a positive slope proportional to
the current flow from IP+ to IP– (pins 1 and 2, to pins 3 and
4). The internal resistance of this conductive path is 0.6 mΩ
for the EX package, and 1.2 mΩ for the LC package, providing
a non-intrusive measurement interface that saves power in
applications that require energy efficiency.
The ACS711 is optimized for low-side current sensing
applications, although the terminals of the conductive path
are electrically isolated from the sensor IC leads, providing
sufficient internal creepage and clearance dimensions for a
low AC or DC working voltage applications. The thickness
Continued on the next page…
Approximate Scale 1:1
Typical Application
IP+ VCC
IP+
VIOUT
IP ACS711
FAULT
IP–
IP– GND
+3.3 V
CBYP
0.1 μF
RPU
CLOAD
ACS711A-DS
Application 1. The ACS711 outputs an analog signal, VIOUT, that varies linearly with the
bi-directional AC or DC primary current, IP, within the range specified. The ¯F¯¯A¯U¯¯L¯¯T¯ pin trips
when IP reaches ±100% of its full-scale current.
1 page  
ACS711
Hall Effect Linear Current Sensor with Overcurrent
Fault Output for < 100 V Isolation Applications
x12AB PERFORMANCE CHARACTERISTICS for LC package and E Temperature Range1
TA = 25°C and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Optimized Accuracy Range
IP
Over full range of IP
Sensitivity
Sens Full scale of IP applied for 5 ms, TA = –40°C to 25°C
Full scale of IP applied for 5 ms, TA = 25°C to 85°C
Noise2
VNOISE TA = 25°C, no external low pass filter on VIOUT
VOE(TA) IP = 0 A, TA = 25°C
Electrical Offset Voltage
VOE(TOP)HT IP = 0 A, TA = 25°C to 85°C
VOE(TOP)LT IP = 0 A, TA = –40°C to 25°C
Total Output Error3
ETOT IP = ±12.5 A,TA = –40°C to 85°C
1See Characteristic Performance Data for parameter distributions over temperature.
–12.5
–
–
–
–
–
–
–
–
2±3 sigma noise voltage.
3Percentage of IP, with IP = ±12.5 A.
Typ.
–
110
110
110
11
±5
±40
±50
±5
Max.
12.5
–
–
–
–
–
–
–
–
Units
A
mV/A
mV/A
mV/A
mV
mV
mV
mV
%
x12AB PERFORMANCE CHARACTERISTICS for LC package and K Temperature Range1
TA = 25°C and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Optimized Accuracy Range
IP
Over full range of IP
Sensitivity
Sens Full scale of IP applied for 5 ms, TA = –40°C to 25°C
Full scale of IP applied for 5 ms, TA = 25°C to 125°C
Noise2
VNOISE TA = 25°C, no external low pass filter on VIOUT
VOE(TA) IP = 0 A, TA = 25°C
Electrical Offset Voltage
VOE(TOP)HT IP = 0 A, TA = 25°C to 125°C
VOE(TOP)LT IP = 0 A, TA = –40°C to 25°C
Total Output Error3
ETOT IP = ±12.5 A,TA = –40°C to 125°C
1See Characteristic Performance Data for parameter distributions over temperature.
–12.5
–
–
–
–
–
–
–
–
2±3 sigma noise voltage.
3Percentage of IP, with IP = ±12.5 A.
Typ.
–
110
110
110
11
±5
±40
±50
±5
Max.
12.5
–
–
–
–
–
–
–
–
Units
A
mV/A
mV/A
mV/A
mV
mV
mV
mV
%
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
5 Page 
ACS711
Hall Effect Linear Current Sensor with Overcurrent
Fault Output for < 100 V Isolation Applications
Characteristic Performance Data
Data taken using the ACS711KLC-25A, VCC = 3.3 V
Accuracy Data
Electrical Offset Voltage versus Ambient Temperature
40
30
20
10
0
-10
-20
-30
-40
–60 –40 –20
0
20 40 60 80 100 120 140
TA (°C)
Sensitivity versus Ambient Temperature
57.0
56.5
56.0
55.5
55.0
54.5
54.0
53.5
–60 –40 –20
0
20 40 60
TA (°C)
80 100 120 140
Nonlinearity versus Ambient Temperature
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
–60 –40 –20
0
20 40 60 80 100 120 140
TA (°C)
100.8
100.6
100.4
100.2
100.0
99.8
99.6
99.4
99.2
99.0
–60
Symmetry versus Ambient Temperature
–40 –20 0
20 40 60
TA (°C)
80 100 120
140
Total Output Error versus Ambient Temperature
5
4
3
2
1
0
-1
-2
-3
-4
–60 –40 –20
0
20 40 60 80 100 120 140
TA (°C)
Fault Operating Point versus Ambient Temperature
30
25
20
15
10
5
0
–60 –40 –20
0
20 40 60
TA (°C)
80 100 120 140
Typical Maximum Limit
Mean
Typical Minimum Limit
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet ACS711.PDF ] | |
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