The MLX90373 is a third generation Triaxis® position sensor IC with PSI5 output and a PCB-less solution. Thanks to an integrated magnetic concentrator (IMC) on its surface, the monolithic device senses, in a contactless fashion, the three spatial components (i.e. Bx, By and Bz) of the applied magnetic field allowing for the determination of rotary and linear movement.

Triaxis® is an innovative magnetic sensor technology capable of very precise three axis magnetic field measurements from a single sensor. Endless linear, angular and 3D applications can be developed.

The MLX90373 expands the Gen III portfolio by offering a PSI5 output complementing the analog, PWM, and SENT outputs available on the MLX90371 and MLX90372 devices. Offering a rotary mode with stray field robustness (180 degrees) it is suitable for applications subjected to stray fields like those found in electrified vehicle drivetrains. An additional non-stray field robust mode of operation is also offered to support backwards compatibility with previous magnetic designs.

• Robustness against stray-field up to 5mT
• ISO26262 ASIL-C Safety Element out-of-Context (SEooC)
• Supported Output mode: 2-wire PSI5 (protocol v1.3 and v2.1)
• Triaxis® Hall technology
• Programmable Linear Transfer Characteristic

                 - Up to 32 programmable calibration points

• Programmable measurement range
• Enhanced serial data communication
• Operating supply voltage from 4.5 V to 18 V
• Operating temperature from -40°C to 125°C
• On-chip signal processing for robust absolute position sensing
• 48 bits usable for customer traceability
• Packages, RoHS compliant

                 - TSSOP-16 (GO), Dual Die (Redundancy)

                 - DMP-4 (VS), Single Die in Dual Mold PCB-less solution

• AEC-Q100 qualified (Grade-0)
• ISO26262 ASIL-C Safety Element out-of-Context (SEooC)
• Programmable with the PTC-04 and the PTC-04-DB-HALL06 daughterboard

The MLX90373 is offered as an ASIL-C SEooC (Safety Element out of Context - ISO 26262) component. Contact Melexis to obtain a copy of the MLX90373 safety manual which details the relevant system integration requirements. For applications requiring redundant sensing the MLX90373 is also available in a dual die (fully redundant) TSSOP-16 package.

The output transfer characteristic is fully programmable with up to 32 calibration points to match any specific requirement through end-of-line programming at module assembly. The Melexis programming unit PTC-04 communicates and calibrates the device exclusively through the connector terminals (Vdd-Vss).

The MLX90373 also brings the ability to read an external input. This could be a signal from a temperature sensor, pressure sensor, or another position sensor. The value is measured, linearized (optional), and then encoded for transmission on the PSI5 bus alongside the angular measurement value allowing for reduction of wire count and better integration of sensors.

The MLX90373 targets and is used in a myriad of non-contacting rotary position sensor applications which are frequently seen in automotive and industrial systems. The IC is available in single and dual redundant implementations to cost-effectively address the full range of applications, including safety critical sensing requirements.

• Absolute Rotary Position Sensor.
• Absolute Linear Position Sensor.
• Pedal Position Sensor.
• Throttle Position Sensor.
• Ride Height Position Sensor.
• Steering Wheel Position Sensor.
• Fuel Level Sensor.
• Non-Contacting Potentiometer.