Quantcast

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

September 24, 2009

IEPER, Belgium, September 24 /PRNewswire-FirstCall/ — 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
lead frame 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 Google
Picasa. The direct link is:

http://picasaweb.google.com/lh/photo/vvXSyHkC49j-O_TRz_XvOg?authkey=Gv1sR

gCN2I29eo4vXqMA&feat=directlink

(Due to the length of this URL, it may be necessary to copy and paste
this hyperlink into your Internet browser’s URL address field. Remove the
space if one exists.)

SOURCE Melexis


Source: newswire



comments powered by Disqus