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TDK Corporation (TSE 6762) expanded its Micronas Dual-Die Hall-effect sensor portfolio with the HAR 379x sensors for multidimensional magnetic field measurements in safety-critical automotive applications according to ISO 26262 rules and in industrial applications. The new sensors come with a digital output: besides pulse-width modulation (PWM) output, the SENT protocol according to the latest generation of SAEJ2716 (rev. 4) is also supported. HAR 379x is the Dual-Die SMD package version of the HAC 37xy family using the proprietary Micronas 3D HAL technology for detecting angles in a range between 0° and 360° (end-of-shaft and through-shaft setup) as well as linear movement or position. 

The HAR 379x sensors' versatile programming characteristics and its high accuracy make the HAR 379x the perfect system solution for gear selector applications – especially because of the possibility to provide the magnetic field amplitude in combination with the angle information. Both parameters are made available via the fast channel of the SENT interface. Additionally, the magnetic field amplitude information enables the required push-functionality. The device fits perfectly into applications where linear movements have to be measured, e.g. in dual-clutch transmission applications, for clutch pedal position detection, as engine stroke sensor, for transmission position measurement, or for cylinder and valve position sensing.

Features

  • Very low angular error of ±1.2° @ 30 mT amplitude
  • End of shaft and off-axis 360° angular measurement
  • Direct measurement of magnetic field amplitude (BX, BY, BZ)
  • Transmission of angle and amplitude information via fast channel of SENT
  • Digital output formats (PWM and SENT SAE J2716 rev. 2016)
  • Addresses safety-critical applications according to ISO 26262 rules
  • Full redundancy due to Dual-Die approach
  • Suitable for automotive applications, thanks to a wide ambient temperature range from -40 °C to 150 °C
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