Switches, Relays & Keypads


New ultra-slim scrollwheel input devices

19 September 2007 Switches, Relays & Keypads

Avago Technologies has developed a new series of ultra-slim scrollwheel input devices available in 12 standard configurations, to meet the aesthetic design needs of designers developing portable handheld applications in low volumes. The AMRX-1510 scrollwheel device provides an integrated solution for easy scrolling, directional navigation, and pushbutton selection in what is claimed to be the industry's thinnest package with dimensions of 1,9 mm height by 18,5 mm diameter.

The device combines an illuminated scrollwheel with tactile left, right, up and down navigation switches and a centre 'select' button. The illumination ring is available in either blue or white, with a variety of material, colour and finish options for the centre select button and scrollwheel.

Based on the same innovative reflective optical technology used in the AMRX-1500 to detect the direction and speed of the rotational movement of the rotary dial, this new input device also incorporates a non-contact motion sensor to ensure reliable operation of the device. It comes with an FPC interconnect terminated in standard surface mount zero insertion force (ZIF) connectors.

The scrollwheel provides a two-channel quadrature output, with resolution of 45 cycles per revolution. It operates from a single 2,4 V to 3,3 V supply, and is available in both single-ended 1,8 V CMOS and 3,3 V TTL logic compatible output options. It is said to be easy to assemble, featuring plug-and-play connectivity through a flexible printed-circuit board, and requiring no signal adjustment. To maximise battery life, the device features a power-down mode in which it draws only 4 μA.

For more information contact Andrew Athanasiou, Arrow Altech Distribution, +27 (0)21 555 1884, aathanasiou@arrow.altech.co.za, www.arrow.altech.co.za



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