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Laser navigation sensor targets wireless mouse apps

Posted: 17 Sep 2010     Print Version  Bookmark and Share

Keywords:wireless mouse  SoC  Bluetooth  navigation sensor 

The ADNS-7630 device features image acquisition system (IAS), a digital signal processor (DSP), Bluetooth HID (Human Interface Device) stream output and RF transceiver. Images taken by the IAS are processed by the DSP to calculate the direction and distance of motion. The DSP subsequently generates the ∆x and ∆y relative displacement values that are then converted for wireless transmission to the Bluetooth host. All these processes are automatically done by the ADNS-7630 without the mouse manufacturer's involvement with source code or firmware.

Meanwhile, Avago's SoC BT navigation engine is also the first mouse sensor which has a fully synchronised BT navigation core and base band circuitry. All communication and algorithms involved between the laser light sensor and RF stages have been optimised for the application. Furthermore, the device also supports multiple I/Os which can be configured as buttons and LED indicators. Each button may be designated to perform several functions, depending on if it is clicked, double-clicked, or long-pressed. Button functions include KeyMap for keyboard shortcut keys, media buttons for audio control, and mouse resolution increase/decrease/rotate features.

The ADNS-7630 also supports both mechanical and optical z-wheel and tilt-wheel functions, programmable resolution, 4-axis sensor rotation and configurable low power operating modes. Moreover, with Avago's free MConfig software, manufacturers can also store configuration settings in an external 128Kbit EEPROM so that a diverse range of markets may be served by one basic ADNS-7630 design.

Additional highlighted specifications of the ADNS-7630 include: programmable resolution of 200 to 3000cpi in 250cpi increments; single 3V supply; up to 10 I/O pins for flexible configuration; 4-axis sensor rotation at 0�, 90�, 180� or 270�.

The ADNS-7630 device is priced at Rs.233.48 ($5) each, in 10,000 piece quantities. Samples and production quantities are currently available through Avago's direct sales channel as well as worldwide distribution partners. The ADNK-7633 reference design kit is also offered by Avago to qualified mouse designers.

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