The HAL 4xy family represents Hall sensors that include a temperature-compensated Hall plate with choppered offset compensation, two linear output stages, and protection devices.
The output voltage is proportional to the magnetic flux density through the Hall plate. The choppered offset compensation leads to stable magnetic characteristics over supply voltage and temperature.
The HAL 4x1 family can be used for magnetic field measurements, current measurements, and detection of any mechanical movement. Accurate angle measurements or distance measurements can also be done. The sensor is very robust and can be used in electrical and mechanical hostile environments.
The sensors are designed for automotive and industrial applications and operate in the junction temperature range from –40 °C up to 170 °C (HAL 401) / –40 °C up to 100°C (HAL 411) and are available in the SMD-package SOT89B.
Block Diagram – System Architecture
- Switching offset compensation at 147 kHz
- Low magnetic offset
- Extremely sensitive
- Overvoltage protection
- Reverse-voltage protection of VDD-pin
- Differential output
- Accurate absolute measurements of DC and low frequency magnetic fields
- On-chip temperature compensation