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February, 2016
Tessenderlo, Belgium — Melexis, an international microelectronics engi- neering company, has made an advancement in magnetic sensing technology which carries with it impli- cations for automotive design. The company’s latest product — the MLX92292 — represents a new way of sensing. The device provides switch and latch functions, but can also deter- mine the presence of magnetic fields that are lateral, not only orthogonal, to it. The device also supports ASIL B safety integrity level (in accor- dance with ISO 26262) and has a variety of built-in mech- anisms available. Flexibility is an impor-
tant characteristic of the chip. OEM customers can choose straightforward pre-program - med units, or can benefit from end-of-line (EoL) program- ming capacity. Each device may be configured during the production pro cess using its output pin. The programming facility also enables setting of both magnetic operating points to small increments across a range of –90mT to +90mT. Housed in 3-lead TSOT or TO92
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Magnetic Latch/Switch with Lateral Sensitivity from Melexis
or the lateral sensitivity option. Lateral sensitivity allows for replace- ment of multiple devices on a board with a single surface mount unit, which lowers cost and saves space. This is made possible by the compa- ny’s proprietary Integrated Magnetic Concentrator (IMC™) technology, which enables substantial heighten- ing of signal-to-noise ratios in mag- netic field measurement. In addition, the capacity of this technology to sense laterally allows lower profile
Lateral sensing latch/switch chips.
package formats, with an operating voltage range of 3.3 to 18V, the device’s low power consumption makes it suitable for battery-powered operation. This can prove advanta- geous in situations where a vehicle’s engine may not be turned on, as it places no significant drain on the bat- tery. Sleep time is a programmable parameter and power consumption can be matched to specific customer needs. The company hopes to find uses for the switches in brake lights, steer- ing sensors, handbrake mechanisms, and other systems. The MLX92292 can be specified with standard orthogonal sensitivity
system implementations, as the mag- net can be alongside the device, rather than needing to be above it. To safeguard the devices, they
include reverse supply voltage, ther- mal, electrostatic discharge, and over-voltage protection, as well as under-voltage lockout. With the capacity to deal with up to a 40V load, it can be connected directly to the vehicle battery. In order to achieve ASIL B compliance, numer- ous diagnostic and monitoring func-
tion have been incorporated. Contact: Melexis, Transport -
straat 1, 3980 Tessenderlo, Belgium % +32-13-670-780 fax: +32-13-672-
134 E-mail:
ist@melexis.com Web:
www.melexis.com
TestEquity: Touchscreen for Environmental Chambers
Moorpark, CA —TestEquity has intro- duced the next generation of its F4T touchscreen controller. The 4.3in (109mm) TFT projected capacitive (PCAP) color touchscreen has been updated with new features to make it easier to use and more secure. The controller has an intuitive
interface which allows for quick entry and readout of parameters and functions for the company’s environ- mental chambers. Users can create profiles directly on the display or by using the free Composer™ software for upload by Ethernet. For conven- ience, an F4 compatibility mode allows frequently used commands to be executed using existing software written for the previous generation of controllers. The F4T supports profile archiv-
ing and transfer by USB drives which allows users to quickly transfer pro- files to multiple chambers. In addition, data logging and transferring by USB simplifies the documentation process by eliminating the need for circular chart recorders. To make the device more secure, it is now protected by multiple password levels to prevent unauthorized users from tampering. NEMA 4/IP65 rated, the controller’s
front panel protects it against damage from dust and liquid.
TestEquity user-friendly touchscreen controller.
The touchscreen controller
stores 40 profiles of 50 steps each, has battery backup and a real-time clock, and also includes Ethernet Modbus® TCP and RS-232 Modbus RTU interfaces. The F4T is available for the company’s new chambers and retrofit kits are available for previ-
ously purchased equipment. Contact: TestEquity LLC, 6100
Condor Drive, Moorpark, CA 93021 % 800-498-9933 fax: 805-498-3733 Web:
www.testequity.com
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