HAL 28xy

Feb/2008

PRODUCT INFORMATION

Linear Hall-Effect Sensor Family with Digital Interfaces

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 pro-

cessing. All members within this family can

be programmed without any additional pro-

gramming 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 sen-

sor which is used for temperature compen-

sation 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 tempera-

ture 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.

Features

−40 °C up to 170 °C

–LIN 2.0

–SENT

– PWM output up to 2 kHz

robust against mechanical stress

and lock function

Major Applications

Due to the sensors’ versatile programming

characteristics and low drifts, the HAL 28xy

family is the optimal system solution for

applications such as

(e.g. for fuel-level sensing)

(e.g. seat track position)