Green Latch Enables Great Power-Saving for Contact-less Magnetic Scrolling Applications
September 24 2009 - 9:00AM
PR Newswire (US)
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.) DATASOURCE: Melexis CONTACT: Company Contact: Rik Moens,
Marketing & Communications Europe, +32-13-670-795,
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