Green Latch Enables Great Power-Saving for Contact-Less Magnetic Scrolling Applications


IEPER, Belgium, September 24 /PRNewswire/ --     Melexis announces today the release of the MLX92213. This
newly designed low voltage Hall-Effect Latch sensor integrates advanced power
management providing micropower-efficient solutions for battery or handheld
applications. With its ingenious magnetic design, the MLX92213 offers a
breakthrough contact-less and reliable solid-state solution for incremental
rotary encoders. The device enhances the efficiency and power consumption of
all scrolling or trackball-type applications found in computer peripherals,
mobile phones or other handheld consumer electronics.

The MLX92213 features an ultra-sensitive Hall-effect Latch
operating from 1.6V to 3.6V. The output is a "Push-Pull" type so that an
external pull-up resistor is not needed for proper operation, hence reducing
PCB component count.

The device is primarily targeting battery-operated
applications. The MLX92213 employs an awake/sleep strategy to reduce its
power consumption versus a standard Hall-Effect latch sensor.

This Micropower Hall-effect Latch is ideally suited for use in
speed and direction detection applications based on multipole magnets. .

Low Voltage Hall-Effect Latch

Produced in a CMOS process, the MLX92213 uses sub-micron
technology optimized for low voltage operation suitable for application
within 1.6V to 3.6V Vdd range. Combining Hall element and offset cancellation
system, the MLX92213 provides ultra-sensitive, accurate and stable magnetic
switching points, independently of temperature and mechanical stress. The
output signal is provided directly through a push-pull output with a standard
+/-1mA capability eliminating the need for an external pull-up resistor..

The device provides contact-less and solid-state switching
based on a magnetic solution, therefore offering bounce-free switching,
robust operation in dirty and dusty conditions and is not subject to
mechanical wear-out. Under power, the device will detect the presence of a
magnetic field and switches its output accordingly. When the Hall sensor
senses a South magnetic pole of a sufficient strength, the output is latched
in a low state. It remains in this state until the Hall sensor senses a North
magnetic field of a sufficient strength where the output is then latched in a
high state.

Ready for Miniature Design and Massive Production

The MLX92213 device is delivered in a Lead-Free and Green
Compliant Micro LeadFrame Package. This miniature package requires only 3mm2
PCB surface (1.5 x 2mm) with only 0.4mm thickness. This represents a major
advantage versus any optical solution as it allows producing much thinner
application designs for consumer handheld devices such as portable media
players or smart phones.

A longer version of this press text can be found on the news
section of the Melexis website: http://www.melexis.com

An accompanying image can be downloaded in our press kit on
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