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LED-based optical mouse sensor

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AGILENT Technologies has released an LED-based optical mouse sensor that provides better tracking control than the company's previous-generation LED-based devices.

The sensor works over a variety of surfaces, including wood desktops and halftone images. The ADNS-3060 LED-based optical mouse sensor provides excellent tracking control for applications such as corded and cordless mice for desktop and game PCs, notebook PCs, trackballs and integrated input devices.

It has a 3.3V operation, power-down current consumption of 30μA, maximum clock frequency of 24MHz and a maximum speed of 1.016m/s at 6400 frames a second. Both sensors offer a resolution of up to 20.32 counts per metre. The ADNS-3060 is designed for use with the Agilent ADNS-2120/ADNS-2120-001 lens, the ADNS-2220/ADNS-2220-001 clip and the HLMP-ED80-XX000 LED. Together these parts form a complete, compact mouse sensor solution.

The ADNS-3060 sensor uses a self-adjusting frame rate which automatically matches the frame rate to the surface characteristics for optimum performance. If the navigation surface reflects light efficiently the sensor will tune for a higher frame rate to improve the tracking performance. The self-adjusting frame rate feature can be disabled if manual control is preferred.

The ADNS-3060 contains an image acquisition system (IAS), a digital signal processor (DSP) and a four-wire serial port. The IAS acquires microscopic surface images from the lens and illumination system. These images are processed by the DSP to determine the direction and distance of motion. The DSP generates the (delta) x and (delta) y relative displacement values, which are converted into SPI (system-packet interface) signals. An external microcontroller reads the x and y information, then translates the data into PS2 or USB signals before sending them to the host PC or game console.

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