Allegro MicroSystems ACS37002 400kHz high-precision current sensor ic
2023-10-12

Allegro MicroSystems ACS37002 400kHz high-precision current sensor IC is a fully integrated Hall effect current sensor with very high accuracy. ACS37002 is the ideal choice for the most demanding power conversion application control circuit. The magnetic field generated by the coupling of current through internal conductors flows through the ACS37002 Hall sensor IC. There is no physical connection between the current and the integrated circuit, allowing for high-voltage isolation. The current is sensed differently by two Hall plates, eliminating interference with external common mode magnetic fields. ACS37002 is factory trimmed, providing high precision throughout the entire working range without the need for further programming.

Allegro MicroSystems ACS37002 400kHz high-precision current sensor integrated circuit has analog and reference outputs, which can achieve signal integrity in noisy environments. The device includes a fast overcurrent fault output with user configurable thresholds through analog input pins, providing short circuit detection and enhanced system protection.

In addition, ACS37002 provides four user selectable gain options in the same device, with two logical inputs without the need for additional components. These options allow designers flexibility and minimize the overall material list for systems that require different current sensing ranges.

characteristic

Wide working bandwidth 400kHz

Inner conductor resistance as low as 0.27 milliohms (MC pack)

Pin selectable gain option (4)

Fast overcurrent detection with a maximum response time of 1.5 µ s

Three different SOICW-16 packages are available:

LA packaging optimized for higher sensitivity and lower noise

MA packaging provides high isolation of 4.8kVrms

The MC package combines the application of conductor resistance of 0.27 milliohms and the highest isolation level of 5kVrms, making ultra-low power consumption and high enhanced isolation necessary