The MLX92221 and MLX92241 Hall Effect sensors from Melexis are
designed for stringent automotive applications requirements such as seat
positioning systems, seat adjusters, seatbelt buckle switches, wipers
and motor commutation systems.
These devices 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. The customer's ability to specify tailored
characteristics will enable improvements to their sensor module yields,
bill-of-materials (BOM) costs and performance capabilities.
For further information visit www.melexis.com
With a wide programmable magnetic range, the MLX92221 and MLX92241 both
feature Hall Effect sensing elements operating from 2.7 V to 24 V
voltage levels, allowing automotive, consumer and industrial
applications to all be addressed. These devices integrate protection
mechanisms to guard against electro-static discharge (ESD), reverse
supply voltage and thermal overload. The reverse supply voltage
protection protects the devices against incorrect connection of the
supply line, up to -24 V.
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 while not being effected 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 single-in-line
(SIL) packages for through-hole mounting, or in a 3-pin thin SOT (TSOT)
packages for surface mounting.
This article originally appeared in EE Times Europe.