Hall-Effect 3D Position Sensor Features Stray Field Compensation

TDK expands its Micronas position sensor portfolio with the HAL 39xy 3D position Hall-sensor family featuring stray-field compensation. The sensors target automotive and industrial markets with four different measurement modes in a single device: linear position detection, rotary 360° angle detection, rotary 180° angle detection with stray field compensation including gradient fields, and the capability for real 3D magnetic field measurement (BX, BY, BZ). According to TDK, the HAL 39xy is the only solution available on the market that integrates all four modes in a single device.


Patented 3D HAL pixel cell technology helps to measure magnetic fields very accurately and is insensitive to stray fields. The concept is based on an array of Hall plates. Each measurement mode uses a different combination of them to enable best performance in each mode. The sensor array of the masterHAL sensor line helps users to select the best operation mode for any given measurement task.

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Via a flexible architecture, the HAL 39xy sensor family offers a wide range of configuration possibilities. It features a DSP and an embedded microcontroller. The DSP is responsible for fast signal processing, while the microcontroller performs the interface configuration and supervision of the functional safety related tasks. Also, the architecture of the HAL 39xy sensors enables quick and easy adaptation to changes in interface standards such as SENT, SPI, and PSI5.


First samples will be available in the first quarter 2019. Further sensor variants, for example a dual-die version with redundancy functionality or with integrated capacitors are under development. For greater insights and knowledge elevations, peruse the HAL 39xy datasheet. Also visit TDK-Micronas.

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