- New dual-die Hall-effect sensor HAR 3927** offers ratiometric analog output and digital SENT protocol according to SAE J2716 rev. 4
- Superior angular measurement and redundancy functions for safety-critical automotive and industrial applications* in a small SOIC8 SMD package
Samples are already available. The start of production is planned for the first quarter of 2022.
The HAR 3927 offers a fully redundant sensor solution for safety-critical automotive applications, such as linear-movement measurements in dual-clutch transmissions, engine stroke sensors, rotary position measurements in gear selectors and accelerator pedals, and electronic throttle control*.
Each HAR 3927 sensor contains two stacked dies that operate independently. The dies have minimal displacement and are penetrated by the same field lines. The HAR 3927, compared to other solutions with two dies side by side, operates with significantly smaller magnets. Its magnetic field amplitude range is 20 mT to
The HAR 3927 is available in a miniature eight-pin SOIC8 package. The redundant single-package solution reduces system costs while increasing the reliability of the system due to smaller PCBs and less solder joints.
The sensor offers two different output formats and a linearization block for an output signal of up to 33 setpoints (17 variable or 33 fixed setpoints). Due to the proprietary 3D HAL pixel-cell technology, customers can measure magnetic-field components, enabling linear and rotary position measurements up to 360°, as well as on-and-off-axis measurements. Primary characteristics like gain and offset, reference position, etc. can be adjusted to the magnetic circuitry by programming the non-volatile memory.
Various configuration options of HAR 3927 increase customers' flexibility during development and enable one sensor to be used in multiple applications, which reduces costs and effort for re-qualification.
Glossary
- 3D HAL® pixel cell: Enables the direct measurement of magnetic fields in three directions X, Y, Z.
Main applications*
- Detection of angle of rotation in automotive applications, such as accelerator pedal, electronic throttle control, rotary shifters (with push-function), as well as rear-axis steering systems
- Detection of linear position in applications like clutch or brake pedal, transmission system, cylinder and valve position sensing
Main features and benefits***
- Very low angular error of ±1.0° @ 30 mT amplitude
- End-of-shaft and off-axis 360° angular measurement
- Direct measurement of magnetic-field amplitude (BX, BY, BZ)
- Customer-selectable analog or SENT output
- Full redundancy due to Dual-Die approach
- SEooC according to ISO 26262 to support functional-safety applications
- Suitable for automotive applications, due to a wide ambient temperature range from -40 °C to 160 °C
Key data TypeHAR 3927PackageSOIC8Output formatsAnalog, SENT SAE J2716 rev. 4Angular error±1.0° @ 30 mTMagnetic-field amplitude range20 mT -
* Any mention of target applications for our products are made without a claim for fit for purpose, as this has to be checked at system level.
** HAL/HAR 39xy uses licenses of
*** All operating parameters must be validated for each customer application by customers' technical experts.
About
About TDK-Micronas
TDK-Micronas is the center of competence for magnetic-field sensors and CMOS integration within the TDK group. TDK-Micronas has gained operational excellence for sensors and actuators production in over 25 years of in-house manufacturing. It has been the first company to integrate a Hall-effect based sensor into CMOS technology in 1993. Since then, TDK-Micronas has shipped over five billion Hall sensors to the automotive and industrial market. The operational headquarters are located in Freiburg im Breisgau (
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