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)