ADNS-5020

更新时间： 2024-11-29 13:05:27

品牌	Logo	应用领域
安华高科 - AVAGO		传感器
页数	文件大小	规格书
24页	330K
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ADNS-5020 数据手册

ADNS-5020-EN

Optical Mouse Sensor

Data Sheet

Description

Features

The Avago Technologies ADNS-5020-EN is an entry-level,

small form factor optical mouse sensor. It comes with

many built-in features and optimized for LED-based

corded products.

• Small form factor

• Built-in LED driver for simpler circuitry

• High speed motion detection up to 20 ips and 2G

• Self-adjusting frame rate for optimum performance

• Internal oscillator – no clock input needed

• Selectable 500 and 1000 cpi resolution

• Operating voltage: 5 V nominal

The ADNS-5020-EN is capable of high-speed motion

detection – up to 20 ips and 2G. In addition, it has an on-

chip oscillator and built-in LED driver to minimize external

components. Frame rate is also adjusted internally.

The ADNS-5020-EN along with the ADNS-5100/ADNS-

5100-001 lens, ADNS-5200 clip and HLMP-ED80 LED form

a complete and compact mouse tracking system. There

are no moving parts, which means high reliability and

less maintenance for the end user. In addition, precision

optical alignment is not required, facilitating high volume

assembly.

• Three-wire serial interface

• Minimal number of passive components

Applications

• Optical mice

The sensor is programmed via registers through a three-

wire SPI interface. It is housed in an 8-pin staggered dual

in-line package (DIP).

• Optical trackballs

• Integrated input devices

Theory of Operation

The ADNS-5020-EN is based on Optical Navigation Tech-

nology, which measures changes in position by optically

acquiring sequential surface images (frames) and math-

ematically determining the direction and magnitude of

movement.

The ADNS-5020-EN contains an Image Acquisition System

(IAS), a Digital Signal Processor (DSP), and a three wire

serial port.

The IAS acquires microscopic surface images via the lens

and illumination system. These images are processed

by the DSP to determine the direction and distance

of motion. The DSP calculates the Dx and Dy relative

displacement values.

An external microcontroller reads the Dx and Dy informa-

tion from the sensor serial port. The microcontroller then

translates the data into PS2 or USB signals before sending

them to the host PC.

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