Palo Alto, Calif. Delivering automatic frame-rate selection and excellent tracking control for optical mice used in desktop and notebook PCs, trackballs, and integrated input devices, Agilent Technologies Inc. offers a new LED-based optical mouse sensor that provides better tracking control than the company's previous-generation LED-based devices. The company says the new sensor outperforms other optical mouse sensors by working over a wider variety of surfaces.
Compared with Agilent's widely used ADNS-2051 high-performance optical navigation sensor, the new ADNS-3060 LED-based optical mouse sensor features 3.3-volt (vs. 5 V)
operation, power-down current consumption of 30 μA (vs. 240 μA), maximum clock frequency of 24 MHz (vs. 18 MHz), and a maximum speed of 40 inches per second (ips) at 6,400 frames per second (fps) (vs. 14 ips at 1,500 fps). Both sensors offer a resolution of up to 800 counts per inch (cpi).
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; however, the self-adjusting feature can be disabled for manual control. If the navigation surface reflects light efficiently, for example, the sensors will tune for a higher frame rate to improve the tracking performance, said the company. In previous optical sensors the frame rate was adjusted by external microcontroller firmware.
The ADNS-3060 contains an image acquisition system (IAS), a digital signal processor (DSP) and a four-wire serial port. How it works: The IAS acquires microscopic surface images via the lens and illumination system, which 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.
The Agilent ADNS-3060 optical navigation sensor in a 20-pin DIP package is priced at $5.00 each in high-volume quantities. The combination of the ADNS-2120/ADNS-2120-001 lens, the ADNS-2220/ADNS-2220-001 clip and the HLMP-ED80-XX000 LED is priced at $0.56 in high-volume quantities. Delivery is 12 weeks.
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