ADNS-2051 データシートの表示（PDF） - HP => Agilent Technologies

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ADNS-2051

Optical Mouse Sensor

HP => Agilent Technologies 

Agilent ADNS-2051

Optical Mouse Sensor

Data Sheet

Description

The ADNS-2051 is a low cost

optical sensor used to implement a

non-mechanical tracking engine for

computer mice.

It is based on optical navigation

technology, which measures

changes in position by optically

acquiring sequential surface images

(frames) and mathematically deter-

mining the direction and magnitude

of movement.

The sensor is housed in a 16-pin

staggered dual inline package (DIP)

that is designed for use with the

HDNS-2100 Lens and HDNS-2200

Clip and HLMP-ED80-XXXXX

(639 nm LED illuminator source).

There are no moving parts, and

precision optical alignment is not

required, facilitating high volume

assembly.

The output format is two channel

quadrature (X and Y direction)

which emulates encoder photo-

transistors. The current X and Y

information are also available in

registers accessed via a serial port.

Default resolution is specified as

400 counts per inch (cpi), with

rates of motion up to 14 inches

per second (ips).

Resolution can also be pro-

grammed to 800 cpi.

The part is programmed via a two

wire serial port, through registers.

Theory of Operation

The ADNS-2051 is based on

Optical Navigation Technology.

It contains an Image Acquisition

System (IAS), a Digital Signal

Processor (DSP), a two-channel

quadrature output, and a two wire

serial port.

The IAS acquires microscopic

surface images via the lens and

illumination system provided by

the HDNS-2100, 2200, and

HLMP-ED80-XXXXX LED. These

images are processed by the DSP

to determine the direction and

distance of motion. The DSP

generates the ∆x and ∆y relative

displacement values that are

converted into two channel

quadrature signals.

Features

• Precise optical navigation tech-

nology

• No mechanical moving parts

• Complete 2D motion sensor

• Serial interface and/or

quadrature interface

• Smooth surface navigation

• Programmable frame speed up to

2300 frames per sec (fps)

• Accurate motion up to 14 ips

• 800 cpi resolution

• High reliability

• High speed motion detector

• No precision optical alignment

• Wave solderable

• Single 5.0 volt power supply

• Shutdown pin for USB suspend

mode operation

• Power conservation mode during

times of no movement

• On chip LED drive with regulated

current

• Serial port registers

– Programming

– Data transfer

• 16-pin staggered dual inline

package (DIP)

Applications

• Mice for desktop PCs,

workstations, and portable PCs

• Trackballs

• Integrated input devices

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