3D position Hall sensor product line with unique stray field compensation

Magnetic Sensors

(PresseBox) ( Freiburg, )

New 3D position sensors based on the Hall-effect allow active stray field compensation of homogenous and gradient fields
Highly flexible device architecture supports various digital interfaces (SPI, PWM, SENT according to SAE J2716 rev. 2016 and PSI5 rev. 2.x)
Presentation of HAL 39xy sensors from November 13 to 16, 2018, at the Electronica exhibition in Munich

TDK Corporation (TSE 6762) expands its Micronas position sensor portfolio with the Hall-sensor family HAL® 39xy featuring stray-field compensation capability built on the highly flexible architecture for multidimensional magnetic-field measurements marketed under the trademark masterHAL® . The sensors meet today's and tomorrow's automotive and industrial market needs and offer four different measurement modes in a single device: Linear position detection, rotary 360° angle detection and rotary 180° angle detection with stray field compensation including gradient fields as well as the capability for real 3D magnetic field measurement (BX, BY, BZ).

The heart of the HAL 39xy sensors is the patented 3D HAL® pixel cell technology. It helps not only to measure magnetic fields very accurately, but it is also insensitive to stray fields. The unique 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 highly flexible sensor array of the masterHAL®sensor line helps design engineers to select the best operation mode for any given measurement task. The HAL 39xy is the only solution available on the market that integrates all four modes in a single device. This offers a clear benefit to customers: They only have to qualify one device instead of various different hardware versions. The new sensors are ideal for a wide range of applications, including all kind of valves and actuators, selectors and gear shifters, pedal-position detection, position detection in transmission systems, steering-angle detection, or chassis-position detection.

Thanks to its flexible architecture, the HAL 39xy sensor family offers a wide range of configuration possibilities. It features a powerful 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. TDK-Micronas offers the development of customized firmware for the DSP and the microcontroller. Together with the flexible Hall sensor front-end, this enables customers to realize new kinds of applications. The innovative architecture of the HAL 39xy sensors makes it easy for customers to develop new solutions using fast prototyping techniques. It also 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. TDK showcases the masterHAL® product line from November 13 to 16, 2018, during the Electronica exhibition in Munich at booth 460 in hall B3.


3D HAL® pixel cell: Enables the direct measurement of magnetic fields in three directions X, Y, Z
Stray-field compensation: Modern Hall-effect sensors must be insensitive against disturbing fields generated by e-motors or power lines in hybrid or electrical vehicles (xHEV)

Main applications

All kind of valves and actuators (e.g. cooling valves, EGR, turbocharger actuators)
Selectors and gear shifters
Pedal-position detection
Position detection in transmission systems
Steering-angle detection
Chassis position detection

Main features and benefits

Stray field robust position detection (linear and rotary up to 360°) covering ISO 11458-2 requirements
Compensation of stray fields with gradients for applications with 180° rotation
Real 3D magnetic field measurement of BX, BY and BZ
Transmission of temperature compensated magnetic raw values (BX, BY, BZ), up to two calculated angles, angle velocity, magnetic field amplitude and/or chip temperature
SEooC according to ISO 26262 to support functional safety applications
Additional switch output
Wide supply voltage range: 3.0 V … 16 V
Suitable for automotive applications, thanks to a wide ambient temperature range from -40 °C up to max. 160 °C

Key data

Type: HAL 3900, HAL 3930, HAL 3980
Package: SOIC-8
Digital output formats: SPI, PWM & SENT SAE J2716 rev. 2016, PSI5 2.x
Angular error: ±0.6° @ 10 mT for rotary setups
Magnetic field amplitude range: 10 mT... 130 mT. Down to 5 mT with reduced accuracy
Safety: ASIL-B ready development according ISO 26262
Sample availability: Q1 2019
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