Melexis MLX90381 3D Magnetic Resolvers

Melexis MLX90381 3D Magnetic Resolvers measure rotational speeds of 50’000 e-rpm (Electrical at Hall plates). The Melexis Resolvers are optimized for robust motor design and are programmable at the module level. The devices are cost-effective and ASIL-ready. The MLX90381 is a monolithic contactless sensor IC sensitive to the flux density applied to the IC in three dimensions (X, Y, Z). Two selectable axes can be mapped to the two high-speed analog outputs allowing the MLX90381 to be used for on-axis and off-axis (through-shaft) position sensing when paired with a moving permanent magnet.

Features

Onboard programming through the I²C protocol
- Programmable at a module level
ISO 26262 ASIL B SEooC (Safety Element out of Context)
AEC-Q100 Qualified
Triaxis® Hall technology
Sine and Cosine analog outputs
Output refresh rate 2µs
Ratiometric outputs

Operating supply voltage 3.3V
Operating temperature from -40°C to 160°C
Selectable magnetic field axis (X/Y – X/Z – Z/Y)
Programmable sensitivity range
- mid field (10…70mT)
- high field (40…160mT)
End-of-shaft / through-shaft operation
Package, RoHS Compliant DFN-6 (LW) single die

Applications

Brushless Motor Control
- Permanent Magnet Synchronous Motor
- Brushless DC Motor (BLDC)

Absolute Rotary Position Sensor
Field-Oriented Motor Control

Melexis MLX90381 3D Magnetic Resolvers

Features

Applications

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