Allegro Hall Effect Linear Current Sensor 30A SOIC-8 5.5V

The Allegro Microsystems Hall Effect Linear Current Sensor provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. Featuring a fully integrated, hall-effect-based linear current sensor IC with a low-resistance current conductor, this device allows for easy implementation and reliable performance.

The sensor consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field, which the Hall IC converts into a proportional voltage. Device accuracy is optimised through the close proximity of the magnetic signal to the Hall transducer.

Key Features

• Current sensing range: ±30A
• Frequency bandwidth: 80KHz typ (-3dB, TA = 25°C, IP is 10A peak-to-peak)
• Supply voltage range: 4.5V to 5.5V
• Primary conductor resistance: 1.20mΩ typ
• Low-noise analogue signal path with device bandwidth set via the FILTER pin
• 5µs output rise time in response to step input current
• Extremely stable output offset voltage with nearly zero magnetic hysteresis
• Ratiometric output from supply voltage
• Output voltage proportional to AC or DC currents, factory-trimmed for accuracy
• 8 pin SOIC package

Applications

This current sensor is typically used for motor control, load detection and management, switch mode power supplies, and overcurrent fault protection. Please note that this device is not intended for automotive applications.

With an isolation voltage of 2.1kVrms and a wide operating temperature range from -40°C to 85°C, this surface-mount sensor is built to deliver consistent results. The compact dimensions (43 mm x 33 mm x 15 mm) and lightweight design (0.047 grams) ensure easy integration into your circuit board designs.