Triaxis© Positionssensoren in dritter Generation
Melexis, the Belgian automotive IC specialist, has announced the MLX90374, the latest addition to its third generation of Triaxis© Hall sensors, which for the first time offer multiple outputs from a single monolithic device.
With two outputs for the detected movement, the MLX90374 can do without a second position sensor in a number of applications.
Based on Melexis' patented 3D Hall sensor technology, the MLX90374 provides the absolute position of a moving magnet covering 360° rotation and linear displacement.
This is achieved in a single-chip solution by integrating a magnetic front end, ADC and DSP as well as a temperature sensor and signal conditioning block for an optional external sensor.
The MLX90374 monolithic provides two independently configurable output stages, the primary output can encode position data in either SENT or PWM, and the second output provides position data encoded as a 12-bit PWM signal.
The second output of the MLX90374 ABB can optionally be operated as a switching signal with programmable thresholds, while the MLX90374 ABC variant has an additional third output that is also configured as a switch.
Each of the outputs is powered by the on-chip DSP and takes either the magnetic data on the chip as source or an external sensor input.
With ISO 26262 ASIL C (SEooC) readiness, an ambient temperature range of up to +160°C and low thermal drift, the MLX90374 is ideal for automotive applications such as Transmission Range Selection (TRS) sensing or inhibitor switches.
It can also be used to detect the position of pedals, steering wheel or seat height as well as in the powertrain.
The flexibility of the MLX90374 is complemented by its performance. A lower flux density requirement compared to previous generations of Triaxis products allows the use of smaller and less expensive magnets.
The low degradation of less than 0.2% error provides the performance customers need, even in high temperature applications such as engine compartments. An additional robust stray field mode allows operation in areas where external stray fields (up to 4kA/m or 5mT) may be present.
Like other members of the third generation triaxis family, the MLX90374 offers a programmable measuring range and programmable output characteristics.
The SENT (SAE J2716) output conforms to SENT 2016 and earlier versions and outputs data in Single Secure Sensor (A.3) or Dual Throttle Position Sensor (A.1) format.
The MLX90374 is available in a SOIC-8 surface mount package or a PCB-less DMP-4 single mount package and operates over an extended temperature range of -40°C to +160°C.