The HAL 28xy family is a new generation of programmable Hall-effect sensors. It consists of members with different digital interfaces, like LIN, PWM, and SENT (SAE J2716). Due to its internal structure, it is possible to easily generate new family members. The built-in RISC processor allows a fast implementation of new output formats or customer-specific signal processing. All members within this family can be programmed without any additional programming pin. Programming is done via LIN frames or BiPhase-M telegrams depending on the family member. The HAL 28xy family features a Hall plate with spinning current offset compensation technique and a precise temperature sensor which is used for temperature compensation of both the Hall sensors’ sensitivity and offset. The sensors’ signal path is handled by the RISC processor. This is of great benefit because analog offsets, temperature shifts, and mechanical stress do not degrade the digital signals. Major characteristics like magnetic field range, sensitivity, offset and the temperature coefficients of sensitivity and offset can easily be adjusted to the magnetic circuit by programming the non-volatile memory. The HAL 28xy family is available in the very small leaded package TO-92UT. |
