Product Brief
Two-wire Hall sensors target body electronics
Rick DeMeis4/6/2012 12:41 PM EDT
Comment
premlx
Yes, the device is fully certified for automotive applications. The supply chain ...
premlx
In this device the temperature cannot be read out. The digital communication ...
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.)
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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Dr DSP
4/6/2012 6:43 PM EDT
Temp compensation is a great feature. Can the temperature be read out as well. If so that would save me a separate sensor.
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premlx
4/9/2012 9:00 AM EDT
In this device the temperature cannot be read out. The digital communication with the sensor is meant for initial programming and not for continuous use in the end application. It is an interesting concept though, perhaps an consideration for future products...
Thanks of your comments
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hm
4/7/2012 9:04 PM EDT
Is it certified for Automative application? Melexis design very good product to solve specific problem and these can also be used for other indirect application.
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premlx
4/9/2012 9:07 AM EDT
Yes, the device is fully certified for automotive applications. The supply chain demands of automotive have also optimized the value proposition, making it an economical solution for all markets.
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