Current Sensor ICs
0 to 50 A Integrated Current Sensor ICs
50 to 200 A Integrated Current Sensor ICs
SIP Package 0 to >1000 A Sensor ICs
Magnetic Digital Position Sensor ICs
Magnetic Linear and Angular Position Sensor ICs
Magnetic Speed Sensor ICs
Motor Driver and Interface ICs
Regulators and Lighting
Sanken Products
Current Sensor ICs
Allegro MicroSystems, LLC has developed a line of fully integrated Hall-effect current sensor and Hall-effect linear integrated circuits that provide highly accurate, low noise output voltage signals that are proportional to an applied AC or DC current. These ICs are in high volume production in many applications, including automotive HEV inverters and electronic power steering (EPS) systems, and in industrial and consumer inverters and motor control applications.
Allegro current sensor ICs are also used in many power monitoring applications, such as computer blade servers and server power supplies. Allegro's proprietary fully integrated Hall-effect current sensor ICs employ advanced IC and packaging techniques for sensing current from 0 A to 50 A and 50 A to 200 A. These integrated solutions provide galvanic isolation (up to 4.8 kV) and extremely low resistance on the primary conductor (≤ 1mΩ) for highly efficient solutions and are available in a variety of surface mount and through-hole packages.  For sensing beyond 200 A, an Allegro linear current sensor IC can be used.
Allegro current sensor ICs allow design engineers to use Hall-effect-based current sensor ICs in new applications where increased energy efficiency or new operating features are required.
 
Wherever current sensing is needed, an Allegro Hall-effect current sensor IC can provide a solution.
 
http://www.allegromicro.com/en/Products/Current-Sensor-ICs.aspx
0 to 50 A Integrated Current Sensor ICs
Allegro offers a unique solution for current sensing through the development of proprietary packaging that employs flip-chip technology. This technology generates excellent magnetic coupling in a core-less package design and provides up to 3000 VRMS galvanic isolation. The low-profile, small form factor packages are ideal for reducing PCB area over sense resistor op-amp or bulky current transformer configurations. The low resistance internal conductor allows for sensing up to 50 A continuous current. Allegro's fully integrated current sensor ICs are factory programmed at end of line testing to maximize device accuracy over temperature, and providing typical output error of 1%.
  
  
 
Current Sensor IC 0 to 50 A Selection Guide
 

 
Generic Part Number
Description
Application
VCC (V)
Type
Current Measurement Range (A)
Temp. Ranges
Bandwidth (kHz)
Isolation Voltage
(VRMS)
Package Type

Primary Conductor Resistance
(mOhms)

ACS709
Current Sensor IC with Fast Overcurrent Fault Response In a Thermally Enhanced Package
Automotive
3.3
Bidirectional
<±10
-40°C to 150°C
120
2100
QSOP-24
1.10

ACS710
High-Voltage Isolation Current Sensor IC with Integrated Overcurrent Detection
Industrial
5
Bidirectional
<±10
-40°C to 125°C
120
3600
SOICW-16
1.00

ACS711EX
Linear Current Sensor with Overcurrent Fault Output with <100 V Isolation
Industrial
3.3
Bidirectional
<±10
-40°C to 85°C
100
100
QFN-12
0.60

ACS711LC
Linear Current Sensor with Overcurrent Fault Output with <100 V Isolation
Industrial
3.3
Bidirectional
<±10
-40°C to 85°C
100
100
SOIC-8
1.20

ACS712
Linear Current Sensor IC with 2.1 kV Isolation
Industrial
5
Bidirectional
<±10
-40°C to 85°C
80
2100
SOIC-8
1.20

ACS713
Linear Current Sensor IC with 2.1 kV Isolation
Industrial
5
Unidirectional
20
-40°C to 85°C
80
2100
SOIC-8
1.20

ACS714
Automotive Grade, Linear Current Sensor IC with 2.1 kVRMS Voltage Isolation
Automotive
5
Bidirectional
<±10
-40°C to 85°C
80
2100
SOIC-8
1.20

ACS715
Automotive Grade, Linear Current Sensor IC with 2.1 kVRMS Voltage Isolation
Automotive
5
Unidirectional
20
-40°C to 85°C
80
2100
SOIC-8
1.20

ACS716
High Voltage Isolation Current Sensor with Integrated Overcurrent Detection
Industrial
3.3
Bidirectional
<±10
-40°C to 125°C
120
3600
SOICW-16
1.00

ACS717
Linear Current Sensor IC with 4.8kV Isolation
Industrial
3.3
Bidirectional
<±10
-40°C to 125°C
40
4800
SOICW-16
0.85

ACS718
Linear Current Sensor IC with 4.8kV Isolation
Industrial
5
Bidirectional
<±10
-40°C to 125°C
40
4800
SOICW-16
0.85

NEWACS720
High Accuracy, Dual Overcurrent Faults, CM field rejection, Isolated Current Sensor IC
Industrial
5
Bidirectional