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| AMRS-2325 Mobile Navigation Pad Module Data Sheet Description The AMRS-2325 is a navigation pad module for use with the AMRI-1000 navigation sense and interface IC. Together they provide a mouse-like pointing solution. The spring loaded center button has large enough displacement to allow mouse-like cursor control on a variety of screen sizes. In addition, the center button provides a click function anywhere in the field of motion with tactile feedback. The AMRS-2325 navigation pad module and AMRI-1000 navigation sense and interface IC form a unique navigation solution for mobile devices by providing superior tactile feedback as well as multiple cursor control operating modes in a small package. Features * 360 degree navigation * Integrated select button * Superior tactile response * Intuitive to use * Single handed operation * 2.5 mm horizontal travel in all directions * Vertical travel for touch sense detection * Small form factor: 23 mm x 4 mm (diameter x height) * No electrical connection to Pad Module required * 3 million button strokes * 1 million button click Theory of Operation The AMRS-2325 is a capacitance based sensor module. A sliding disk is held at a center position by a patented spring system when the pointer is not being used. Cursor navigation is activated when slider senses the button touch. The sliding disk may be moved in any direction with excellent tactile feedback provided by the retention spring system. The navigation sense and interface IC tracks the movement of the sliding disk on an electrode array providing a mobile navigation experience similar to that provided by a PC mouse or analog joystick. A selection or clicking operation can be performed by fully pressing the sliding disk. A dome switch provides tactile feedback for this operation. Applications * Computer Peripherals * Remote Controls * PDAs and Tablet PCs * Sub-Notebook and Laptop PCs * Mobile Multi Media Players * Video Game Controllers * Joystick applications Dimensions 2.6+0.05 0 (n15.0) Figure 1. Navigation Pad Module dimensions Reference Electrode Design 2.180.1 4-PCB LOCATOR PIN 0.850.08 40.1 Figure 2. Electrodes Layout 23 .0 n15.00.05 5 0.0 BUTTON DIAMETER All units are in mm unless specified All tolerances are 0.05 unless specified PCB configurations:* 4 Layers FR4, thickness = 1.6mm * 1oz copper * Prepreg thickness = 0.014" (2-7628) * Effective soldermask thickness = 25mm Absolute Maximum Ratings Parameter Storage Temperature Symbol TS Minimum -40 Maximum 85 Units C Notes Recommended Operating Conditions Parameter Operating Temperature Symbol TA Minimum -5 Typical Maximum 70 Units C Notes Non-condensed Mechanical System Specifications Parameter Touch sense force Button click force Centering pre-load force Max travel force Travel [1] Re-centering offset Notes: [1] Includes re-centering offset Symbol Fts Fbc Fcp Fms Minimum 40 0 15 50 .63 Typical 95 90 40 100 .85 340 Maximum 145 360 60 135 3.06 Units g g g g mm um Notes Initial displacement force from center position From center in all directions Radial from ideal center position For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies, Limited in the United States and other countries. Data subject to change. Copyright (c) 007 Avago Technologies Limited. All rights reserved. AV0-0480EN - June 8, 007 |
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