MLX90397 / Triaxis® magnetometer for cost-effective battery powered applications

The MLX90397 is a monolithic sensor IC sensitive to the flux density applied orthogonally and parallel to the IC surface. The device makes magnetic measurement along the 3 axis (X, Y being in a plane parallel to the surface of the die, Z being perpendicular to the surface). The user can actually choose the fields to measure among BX, BY, BZ, temperature or a combination. Those measurements and the IC temperature are converted into 16-bit words which are transferred upon request over I2C communication channel. The device transmits compensated raw measurement data.

MLX90397 Datasheet

MLX90397 Features and benefits

Micropower (Battery applications)
- Power down current of typ. 7 nA
- Supply voltage of 1.7 ~ 3.6 V
Suitable for space constrained applications
- UTDFN-8 package (JEDEC qualified) 2 mm x 2,5 mm x 0.4 mm
Programmable parameters on the fly
- Bx, By, Bz, temperature or a combination.
- Filtering
- Selectable operating modes: single measurement or continuous mode up to 1.4 kHz (XYZ)
Compatible with I2C (0.1, 0.4 or 1 MHz)
Digital 16-bit Output for magnetic and temperature (XYZT)
Triaxis® Hall technology for best-in-class noise with typ. 2.2 µT (for 5 ms conversion time)
Ambient temperature range from -40℃ to 105℃

Especially designed for low micropower the MLX90397 is ideal for battery-powered applications:

power down current of typ. 7nA
operating on 1.7 ~ 3.6 V supply
supporting position sensor applications with a +/-50mT range with an adaptive range on BZ of +/-200 mT

A reset pin allows the MLX90397 to handle extra low idle current consumption which is beneficial for applications where the update rate is low.

The MLX90397 also simplifies your designs!

The solution reduces bill-of-materials costs and saves PCB space. Measuring just 2 x 2.5 x 0.4 mm, the sensor features a UTDFN-8 ultra-thin flat no-lead 8-pin package to help designers tackle space-constrained applications. Simpler PCB can be achieved. Additionally, the MLX90397 comes pre-programmed, making it a plug & play solution to integrate.

An EVB90397 is available to support the start of your design.