HAL 1508 (your choice)
Ordering Code: HAL 1508SU-A
Interface : 3-Wire, Open-drain
Switching Behavior: Unipolar
Temperature Coefficient [ppm/K]: -1000ppm/K
Switching Points [mT] at 25°C:
BON -5.5 - BOFF -3.7
The HAL 15xy family consists of different Hall switches containing a temperature-compensated Hall plate with active offset compensation and comparator, available optionally with open-drain or current output.
As global Hall switch supplier with long-term experience since 1993, 1.5 billion shipped automotive switches and leading expertise in high-quality Hall-effect sensor solutions, TDK-Micronas expands its large switch portfolio with the new HAL 15xy family.
All CMOS wafer processing is done in TDK-Micronas’ facilities in Freiburg (Germany) to ensure best quality control and highest flexibility.
As improved successor of the well-known HAL 5xy family, the HAL 15xy is available as 3-wire version with short-circuit protected open-drain output and 2-wire version with current output. HAL 15xy is available in the smallest SOT23 package and provides lowest power consumption, fast response times, and special safety features like a unique power-on self-test for greater customer benefit at an excellent price-performance ratio.
With different switching-point versions, the HAL 15xy switch family serves a broad variety of automotive and industrial applications under harshest temperature conditions.
HAL 15xy fulfills the latest quality and functional safety standards as AEC-Q100 qualified and ASIL B ready device, enabling our customers to target even the most safety-critical applications.
Block diagram – system architecture
HAL 15xy sensors are monolithic integrated circuits which switch in response to magnetic fields. If a magnetic field with flux lines perpendicular to the sensitive area is applied to the sensor, the biased Hall plate forces a Hall voltage proportional to this field. The Hall voltage is compared with the actual threshold level in the comparator. If the magnetic field exceeds the threshold levels, the output stage (open-drain output for 3-wire devices or current source for 2-wire devices) is switched to the appropriate state.
The built-in hysteresis eliminates oscillation and provides switching behavior of output without bouncing. Magnetic offset caused by mechanical stress is compensated by using the “switching offset compensation technique”.
The device is able to withstand a maximum supply voltage of 24 V for unlimited time and features overvoltage capability up to 40 V load dump.