Current Sensor ICs

400kHz, High-Accuracy Current Sensor IC with 5kV Isolation for Industrial Applications

ACS37003

Markets Served

The ACS37003 offers precise current sensing for industrial motor control and power applications, with 400kHz bandwidth, 5kV isolation, and differential sensing for high accuracy in noisy environments. Its low internal conductor resistance minimizes power loss.

Evaluation Board

Product Details

Product Details

Top Features

400kHz operating bandwidth offers fast control loops and use for monitoring high-speed currents
High accuracy achieved with 6 mV maximum offset voltage over temperature and non-ratiometric operation with VREF output, and differential sensing for high immunity to magnetic fields
Externally configurable gain settings using two logic pins and four adjustable gain levels for design flexibility
Industrial only. See the ACS37002 in the MC package for automotive qualified version with additional feature set

Target Application

Part Number Specifications and Availability

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ACS37003KMCATR-050B5

basic_isolation_working_voltage_vrms: 1144
reinforced_isolation_working_voltage_vrms: 572
isolation_voltage_vrms: 5000
creepage_mm: 8.7
clearance_mm: 8.7
primary_conductor_resistance_mohm: 0.27
architecture: Bidirectional
current_measurement_range_a: ±50
bandwidth_khz: 400
supply_voltage_v: 5
temp_ranges: -40°C to 125°C
aec_q100: No
over_current_fault: No
package: 16-pin SOICW
market: Industrial
features: Zero Current Reference Voltage Output

ACS37003KMCATR-085B5

basic_isolation_working_voltage_vrms: 1144
reinforced_isolation_working_voltage_vrms: 572
isolation_voltage_vrms: 5000
creepage_mm: 8.7
clearance_mm: 8.7
primary_conductor_resistance_mohm: 0.27
architecture: Bidirectional
current_measurement_range_a: ±85
bandwidth_khz: 400
supply_voltage_v: 5
temp_ranges: -40°C to 125°C
aec_q100: No
over_current_fault: No
package: 16-pin SOICW
market: Industrial
features: Zero Current Reference Voltage Output

ACS37003KMCATR-120B3

basic_isolation_working_voltage_vrms: 1144
reinforced_isolation_working_voltage_vrms: 572
isolation_voltage_vrms: 5000
creepage_mm: 8.7
clearance_mm: 8.7
primary_conductor_resistance_mohm: 0.27
architecture: Bidirectional
current_measurement_range_a: ±120
bandwidth_khz: 400
supply_voltage_v: 3.3
temp_ranges: -40°C to 125°C
aec_q100: No
over_current_fault: No
package: 16-pin SOICW
market: Industrial
features: Zero Current Reference Voltage Output

ACS37003KMCATR-180B5

basic_isolation_working_voltage_vrms: 1144
reinforced_isolation_working_voltage_vrms: 572
isolation_voltage_vrms: 5000
creepage_mm: 8.7
clearance_mm: 8.7
primary_conductor_resistance_mohm: 0.27
architecture: Bidirectional
current_measurement_range_a: ±180
bandwidth_khz: 400
supply_voltage_v: 5
temp_ranges: -40°C to 125°C
aec_q100: No
over_current_fault: No
package: 16-pin SOICW
market: Industrial
features: Zero Current Reference Voltage Output

Design Tools

ACS37003

Simulation Tool

Current Sensor Error and Resolution

Software Portal

ACS LTspice Library

Technical Documentation

Glossary of Isolation-Related Terms for Integrated Current Sensors

Application Note

Glossary of Isolation-Related Terms for Integrated Current Sensors

Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors

Application Note

Package Thermal Resistance for Allegro Current Sensors with Integrated Conductors

Certificate of Compliance 20200511-E316429

Certificate of Compliance 20200511-E316429

Certificate CB US 35764 UL MC Package

Certificate CB US 35764 UL MC Package