The ACS712ELCTR-30A-T is a high-precision, linear Hall Effect current sensor designed for accurate AC or DC current sensing in industrial and commercial systems. This specific "30A" variant is optimized for high-current applications, providing a low-resistance copper conduction path that allows for reliable power monitoring with minimal energy loss.

Specifications

• Supply Voltage: 4.5V to 5.5V DC
• Optimized Current Range: +/-30A
• Sensitivity: 66 mV/A
• Internal Conduction Resistance: 1.2 mohm
• Total Output Error: 1.5% at 25 degrees Celsius
• Isolation Voltage: 2.1 kVRMS (between conduction path and sensor electronics)
• Bandwidth: 80 kHz
• Operating Temperature: -40 to 85 degrees Celsius
• Package: SOIC-8 (SMD)

Features

• Low-Noise Analog Path: Features an integrated shield that greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals, preventing offset drift in high-side applications.
• Galvanic Isolation: The design provides inherent electrical isolation, allowing the sensor to be used in high-side current sensing without the need for expensive opto-isolators.
• Ratio-metric Output: The output voltage is proportional to the sensed current and tracks the supply voltage, making it easy to interface with 5V Analog-to-Digital Converters (ADCs).
• Precise Factory Calibration: The device is laser-trimmed at the factory for high accuracy and extremely low magnetic hysteresis.
• Compact SMD Design: The standard SOIC-8 surface-mount package allows for automated assembly on high-density power management boards.

Common Applications

• Motor control and speed regulation in high-power industrial equipment.
• Load detection and management in Switched-Mode Power Supplies (SMPS).
• Overcurrent fault protection and battery monitoring in Solar Inverters.
• Real-time current tracking in Automotive and Battery Management Systems (BMS).

Link to datasheet: Allegro Datasheet