![Image](/images/2023/11/15/melexislogoblue2023_white__500x250_trans.png)
the world’s first pico-resolver
![Image](/images/2022/09/01/picoresolver_headweb_en.png)
Design
The MLX90381 is a 3D magnetic resolver IC measuring rotational speeds of 50’000 e-rpm (Electrical at Hall plates). It is optimized for robust motor design: smallest footprint, programmable at module level, cost-effective and ASIL-ready.
Develope
The MLX90381, Triaxis® pico-resolver, is a monolithic contactless sensor IC sensitive to the flux density applied in three dimensions (X, Y, Z) to the IC. 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.
App
With its 3.3V supply, high speed, small size, and flexible configuration the MLX90381 is ideal for use in motor control applications when paired with a suitable microcontroller.
The MLX90381 offers intelligent solutions for innovative products
It is optimized for robust motor design: smallest-footprint, programmable-at-module-level, cost-effective, and-ASIL-ready.
Application Diagram
![Image](/images/2022/07/09/mlx90381_functional-diagram-and-application-modes.png)
Application
![](/images/2022/10/18/iconmonstr-check-mark-circle-lined-240.png)
Absolute Rotary Position Sensor
![](/images/2022/10/18/iconmonstr-check-mark-circle-lined-240.png)
Brushless Motor Control
![](/images/2022/10/18/iconmonstr-check-mark-circle-lined-240.png)
Field-Oriented Motor Control
Features and Benefits
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Smallest footprint DFN-6 package 2 x 2.5 mm2
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Onboard programming through I2C protocol
Programmable at module level
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
ISO 26262 ASIL B SEooC
(Safety Element out of Context)
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
AEC-Q100 Qualified
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Triaxis® Hall technology
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
End-of-shaft / through-shaft operation
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Package, RoHS Compliant: DFN-6 (LW) single die
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Output refresh rate 2 µs
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Ratiometric outputs
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Measure rotational speeds of more than 50’000 e-rpm
(Electrical at Hall plates)
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Operating supply voltage 3.3 V
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Selectable magnetic field axis (X/Y - X/Z - Z/Y)
![](/images/2022/10/18/iconmonstr-menu-circle-filled-240.png)
Programmable sensitivity range
Mid field (10…70mT)
High field (40…160mT)