The HAL 2850 is a new member of the Micronas varioHAL (HAL 28xy) family of programmable linear Hall-effect sensors.

FEATUREs
◆ High-precision linear Hall-effect sensor
◆ Spinning-current offset compensation
◆ Built-in temperature sensor
◆ On-board diagnostics (over temperature, over current, etc.)
◆ Customer-programmable temperature compensation of output sensitivity (2nd order) and output offset (1st order)
◆ Operating junction temperature range: −40 °C…170 °C.
◆ Magnetic characteristics are extremely robust against mechanical stress.
◆ Digital signal processing
◆ 12-bit resolution
◆ Sampling rate up to 2 kHz with internal low-pass filter
◆ Sample accurate transmission (each PWM period transmits a new Hall sample)
◆ Programmable PWM frequency in a range between 30 Hz and 2 kHz
◆ Non-volatile EEPROM with redundancy and lock function
◆ Open-drain output with slew-rate control
◆ Individual serial number for each sensor
◆ 12-bit customer serial number

Major Applications
Due to the sensor’s versatile programming characteristics and low drifts, the HAL 2850 is the optimal system solution for applications such as:
◆ Contactless potentiometers
◆ Angular measurements (e.g. valve, pedal position)
◆ Linear movement (e.g. seat track position)
◆ Linear force or torque measurements
◆ Current sensing (e.g. battery management)
◆ Leveling (e.g. fuel level, suspension control or headlight leveling)