Summary of Automotive sensor needs no PCB
The MLX90364 is a Triaxis position sensor in a Dual Mold Package (DMP) that integrates a 12-bit sensing die and decoupling capacitors to meet automotive ESD/EMC requirements, allowing welding or soldering directly to connectors without a PCB. It supports linear and rotary sensing, programmable transfer curves, analog or PWM outputs, diagnostics, voltage protection, is AEC-Q100/Q200 qualified, and designed for high thermal and mechanical robustness.
Parts used in the MLX90364 Triaxis Position Sensor Project:
- MLX90364 Triaxis position sensor die (12-bit resolution)
- Dual Mold Package (DMP) encapsulation
- 4 decoupling capacitors (integrated in DMP)
- Rugged connector or termination for welding/soldering
- Potting or over-molding compound (optional for final module)
MLX90364 General Description
The MLX90364 Triaxis® product is based on a Dual Mold Package (DMP) which integrates the Triaxis sensing die together with the discrete decoupling components necessary to meet the strenuous ESD and EMC requirements found in a typical automotive environment. Once encapsulated, this DMP can be welded or soldered directly to a rugged connector or termination and further potted or over-molded. The DMP simply makes the conventional PCB redundant while keeping intact all the features and benefits of the Triaxis non-contact sensing technology.
MLX90364 Features and Benefits
- Absolute Rotary & Linear Position Sensor IC
- Robust Dual Mold Package (DMP) feat. 4 Decoupling Capacitors (ESD/EMC)
- Reliable Module Integration
- Triaxis Hall Technology
- Simple Magnetic Design
- Programmable Transfer Characteristic (Multi-Points – Piece-Wise-Linear)
- Selectable Output Mode: Analog (Ratiometric) – Pulse Width Modulation (PWM)
- 12 bit Resolution – 10 bit Thermal Accuracy
- Open/Short Diagnostics
- On Board Diagnostics
- Over-Voltage Protection
- Under-Voltage Detection
- 48 bit ID Number option
- Automotive Temperature Range
- AEC-Q100 & AEC-Q200 Qualified
- DMP-4 RoHS Compliant
A position sensor for automotive applications from Melexis can be used without a PCB within sensing modules.
This device is based on a dual mold package construction, which integrates a 12-bit resolution position sensing die together with the decoupling capacitors necessary to meet the strenuous electro-static discharge (ESD) and electromagnetic compliance (EMC) requirements of automotive environments.
“Once encapsulated, this DMP can be welded or soldered directly to a rugged connector or termination and further potted or over-molded. The dual mold package simply makes the need for a conventional PCB arrangement redundant. Dedicated ears allow greater accuracy levels to be realised when mounting,” said the supplier.
Melexis is already shipping the MLX90364 Triaxis to several automotive tier 1 suppliers.
The sensor device can be used in either linear or rotary position sensing applications. It features fully programmable transfer functionality, selectable analog and pulse width modulation (PWM) output modes, open/short diagnostics, on-board diagnostics, under-voltage detection and over-voltage protection. A SENT-SAE J2716 capable version is currently under development.
“The MLX90364 addresses the automotive industry’s demands for more electrical, mechanical and environmental robustness”, said Vincent Hiligsmann, Marketing Manager for Sensors at Melexis.
“Combining the dual mold package with our latest position sensor ICs, means that the vulnerability often associated with use of PCBs when they are exposed to high temperatures or high levels of vibration can be avoided. By using fewer components and lowering the number of solder-joints by more than a factor of three, the risk of failures is decreased greatly,”said Hiligsmann.
The MLX90364 is qualified according to the AEC-Q100 and Q200 automotive standards. It has passed extreme robustness validation tests, such as long exposures to ambient temperatures up to 170 deg C.
For more read: Automotive sensor needs no PCB
- Can the MLX90364 be used without a PCB?
Yes, the DMP integrates the die and decoupling capacitors so it can be welded or soldered directly to a connector, making a PCB redundant. - What output modes does the MLX90364 support?
It supports selectable analog (ratiometric) and pulse width modulation (PWM) output modes. - Is the MLX90364 suitable for automotive environments?
Yes, it is AEC-Q100 and AEC-Q200 qualified and designed to meet automotive ESD and EMC requirements. - Does the MLX90364 provide diagnostics?
Yes, it offers on board diagnostics as well as open/short diagnostics and under-voltage detection. - Can the MLX90364 be used for both linear and rotary sensing?
Yes, the device can be used in either linear or rotary position sensing applications. - How does the DMP improve robustness compared to a PCB solution?
The DMP reduces component count and solder joints, lowering failure risk under high temperatures and vibration compared to exposed PCBs. - Does the MLX90364 have over-voltage protection?
Yes, the device includes over-voltage protection. - What resolution and thermal accuracy does the MLX90364 offer?
It offers 12 bit resolution and 10 bit thermal accuracy. - Is a SENT-SAE J2716 output available for the MLX90364?
A SENT-SAE J2716 capable version is currently under development.
