Melexis' MLX92221 and MLX92241 Hall Effect sensors are designed to deliver performance with the robustness needed for the stringent automotive requirements of applications such as seat positioning and adjustment systems, seatbelt buckle switches, wipers, and motor commutation systems.
The sensors are equipped with an EEPROM memory, allowing the setting of customer-specific parameters for magnetic switch points, output polarity, IOFF current and magnet material temperature compensation coefficient. Melexis says customers can specify tailored characteristics to enable improvements to their sensor module yields, bill-of-materials costs and performance capabilities.
With a wide programmable magnetic range, the MLX92221 and MLX92241 both feature Hall Effect sensing elements operating from 2.7 to 24V, addressing automotive, consumer, and industrial applications. These devices integrate protection mechanisms to guard against ESD, reverse supply voltage, and thermal overload. The reverse supply voltage protection protects the devices against incorrect connection of the supply line, up to -24V.
The core magnetic sensor circuit in the devices of this platform is re-engineered with a special focus on the offset cancellation system, allowing faster and more accurate processing that is unaffected by temperature. A programmable negative temperature coefficient is implemented to compensate for the natural behavior of permanent magnets to become weaker at elevated temperatures.
The MLX92221 and MLX92241 are delivered in RoHS compliant SIL packages for through-hole mounting, or in 3-pin thin SOT (TSOT) packages for surface mounting.
A range of standard versions of the MLX92221 and MLX92241 are available. For high volume production and tailored versions please consult your local Melexis contact.
(Data sheets can be downloaded by clicking the above links in the first paragraph.)
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