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Crystal-free optical nav ICs fit tilt wheels

Posted: 23 Jan 2009 ?? ?Print Version ?Bookmark and Share

Keywords:optical navigation chip? USB? tilt wheel Vista?

Apexone Microelectronic has released what it claims to be the first crystal-less tilt USB or PS2 optical navigation SOC to support Window Vista tilt wheel functions. The A2635 is designed for PC or notebook USB or PS2 tilt wheel human interface device and navigation devices.

The A2635 supports Windows Vista, XP, 2000, ME and 98 OS. With minimum external components, the device offers low BOM cost. The A2635 also features suspension function and wake-up feature to reduce power consumption. In addition, the device is USB-IF and WHQL compatible and has an ESD protected design of > 2000V with bus-pin(VDD/GND/DP/DM) up to 4000V.

Innovations have enabled the A263X family to delivery superior cost performance comparing to existing solutions. A263X integrated features include: optical sensor array, DSP, USB transceiver, PS/2 transceiver, clock generator, voltage regulator and support for latest Windows Vista tilt-wheel function. Some of the key IP innovations include surface quality algorithm that which picks up better, more useful image frames and discards bad, less meaningful ones; and the enhanced motion sensing that predicts motion direction using a special algorithm to control LED for better surface reading.

Other members of the A263X family include the A2633 and A2634 3D3B PS/2 optical mouse sensor SoC with up to 1600dpi resolution support. The A2636 or A2637 provides the addition of integrated USB interface and is pin-compatible with the A2633/34. PC mouse designers can use the same PCB for all A263X. Apexone was one of first two companies that have successfully launched a product that integrates sensor, USB or PS/2 IP cores on a single chip.

Housed in a DIP-12 RoHS green package, the A2635 has been released for volume production. Samples, demonstration units and pricing are available upon request.

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