HAL 39xy is a new generation of 3D position sensors from TDK-Micronas addressing the need for stray field robust linear and rotary position detection as well as ISO 26262 compliant developments.
This sensor family consists of four members: HAL 3900 features an SPI interface and various low-power modes. HAL 3930 supports a PWM/SENT interface and a switch output. The switch output is configurable as high-/low-side switch. The switch signal can be derived from various sources along the signal path. HAL 3970 features an SPC (Short PWM Code) output with trigger pulse and ID selection. HAL 3980 offers a PSI5 interface.
All devices can measure a 360° angular range as well as linear movements. HAL 3900 and HAL 3930 support the option for 3D position detection. Depending on the device, it is possible to transmit temperature-compensated values of BX, BY, BZ or up to two calculated angles. The HAL 3980 it is also capable of transmitting the angular speed.
All devices offer setpoint linearization with either 33 equidistant distributed setpoints or 17 variable setpoints.
The sensors measure the position of a magnet, based on 3D HAL technology from TDK-Micronas. The devices are able to suppress external magnetic stray fields by using an array of Hall plates. Only a simple two-pole magnet is required to measure a rotation angle. Off-axis measurements are also possible.
The sensors are defined as SEooC (Safety Element out of Context) ASIL B ready according to ISO 26262.
Major characteristics like gain and offset, reference position, etc. can be adjusted to the magnetic circuitry by programming the non-volatile memory.
The devices are designed for operation in an ambient temperature range of –40 °C up to max. 150 °C.
The HAL 39xy family is available in a very small eight-pin SOIC8 package.
HAL 39xy uses licenses of Fraunhofer Institute for Integrated Circuits IIS.