Application of Programmable Hall Sensor GX750 in Automotive Engine Crankshaft Position Detection

The function of the crankshaft position sensor is to determine the position of the crankshaft, that is, the angle of the crankshaft and the engine speed. It usually works together with the camshaft position sensor to detect the engine speed. The crankshaft sensor usually uses Hall effect signal sensors, which have high anti-interference ability and a wide temperature range. The programmable Hall sensor GX750 is an active Hall sensor suitable for camshaft applications and similar industrial applications. It can be used to detect the position of the engine crankshaft to determine the engine speed and position, making it ideal for use in automotive engine environments.

The function of GX750 is to map a tooth or groove to a unique electrical output state. It has online programming function and can modify parameters after manufacturing to achieve true power on function even in the presence of different magnetic configurations or alignment errors during the production process. In addition, the chip also implements a self calibration module to achieve optimal accuracy during normal operation.

GX750 product features:

Hall switch sensors are used to measure the speed or phase of polar wheels/gears

Digital output signal (voltage interface)

Independent unit chopper system

TPO True Power On function

Dynamic self calibration algorithm

Online programmable switch points

Electrically Erasable Programmable Read Only Memory (EEPROM) for various algorithm options

TC pre programmed with back biased magnet

High resistance to mechanical stress

Immunity to high electrostatic discharge (ESD) and high electromagnetic compatibility (EMC)

Improved micro cutting capability

Adopting a three pin package, it provides power supply voltage and open drain output.

Working temperature range -40 ℃ to 150 ℃

Packaging form PG-SSO3-52