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

IEPER, Belgium - 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: www.melexis.com

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Source: Melexis

Company Contact: Rik Moens, Marketing & Communications Europe, +32-13-670-795, rmo at melexis.com