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ACS70311LKTATN-2P5B5-C

ACS70311LKTATN-2P5B5-C

Allegro MicroSystems
Board Mount Hall Effect / Magnetic Sensors HIGHEST ACCURACY PROGRAMMABLE LINEAR HALL EFFECT SENSOR IC WITH REVERSE BATTER PROTECTION
12,115 in stock
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Overview

The ACS70311 is a high-accuracy, programmable linear Hall-effect sensor IC designed for precise current sensing applications in demanding environments. It features an onboard supply regulator with reverse-battery protection and segmented linear temperature compensation to maintain stable performance across a wide operating range. This AEC-Q100 Grade 0 qualified device is particularly suited for high-bandwidth automotive and industrial power monitoring.

Why Choose This Part

This sensor offers exceptional accuracy with a 1 percent typical error rate and a high bandwidth of 240 kHz for capturing fast transients. It provides significant integration benefits including internal voltage regulation and reverse-battery protection up to -18V, reducing the need for external protection circuitry. The customer-programmable offset and sensitivity trim allow for end-of-line calibration to compensate for mechanical assembly tolerances.

Applications

EV Inverter Current Sensing
High-bandwidth monitoring of phase currents in electric vehicle traction inverters for precise motor control.
Battery Management Systems
Measuring high-current charge and discharge cycles in large-scale battery packs with minimal thermal drift.
Industrial Overcurrent Protection
Fast 2-microsecond response time enables rapid fault detection in industrial power supplies and motor drives.
Smart Grid Energy Monitoring
Accurate linear output for monitoring power distribution in smart meters and renewable energy systems.

Getting Started

To evaluate this sensor, use a programming interface that supports Allegro's single-wire communication protocol for configuring the EEPROM settings. Engineers should ensure proper magnetic shielding and trace routing to maintain the low-noise performance of the 1.2 nV/rtHz amplifier. For rapid prototyping, look for the ACS70311 evaluation kits which provide a reference PCB layout and easy access to the 4-pin SIP pins.