With its MLX92242, Melexis Technologies NV Hall effect switch/latch IC can be programmed at the end of a production line to meet the mechanical tolerance requirements of the application. Set via the sensor’s VDD pin, EEPROM programmable memory is used to adjust the various tolerances. Instead of 3-wires, the 2-wire units only use the VDD and GND pins but still provide all the necessary diagnostic capacity to respond if malfunction conditions occur. This saves wiring in in the automotive applications that the sensors target. The sensors operate over a 2.7V to 24V range.
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