ADNS-3530

Low Power LED Integrated Slim Mouse Sensor

Data Sheet

Description

The ADNS-3530 LED optical mouse sensor is a small form

factor (SFF) LED illuminated navigation system.

The ADNS-3530 is a low-power optical navigation sen-

sor. It has a new, low-power architecture and automatic

power management modes, making it ideal for battery-

and power-sensitive applications such as cordless input

devices.

The ADNS-3530 is capable of high-speed motion

detection — up to 20 ips and 8 g. In addition, it has

an on-chip oscillator and integrated LED to minimize

external components.

The ADNS-3530, along with the ADNS-3150-001 lens,

forms a complete and compact mouse tracking system.

There are no moving parts which means high reliabil-

ity and less maintenance for the end user. In addition,

precision optical alignment is not required, facilitating

high volume assembly.

The sensor is programmed via registers through a four-

wire serial port. It is packaged in a 16 I/O surface mount-

able package.

Theory of Operation

The ADNS-3530 is based on Optical Navigation Technol-

ogy, which measures changes in position by optically

acquiring sequential surface images (frames) and math-

ematically determining the direction and magnitude of

movement.

The ADNS-3530 contains an Image Acquisition System

(IAS), a Digital Signal Processor (DSP), and a four 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

Δx and Δy relative

displacement values.

An external microcontroller reads the

Δx and Δy infor-

mation from the sensor serial port. The microcontroller

then translates the data into PS2, USB, or RF signals

0before sending them to the host PC or game console.

Features

• Low power architecture

• Small form factor

• Surface mount technology (SMT) device

• Self-adjusting power-saving modes for longest

battery life

• High speed motion detection up to 20ips and 8g

• Self-adjusting frame rate for optimum performance

• Motion detect pin output

• Internal oscillator – no clock input needed

• Selectable 500 and 1000 cpi resolution

• Wide operating voltage: 2.7V-3.6V nominal

• Four wire serial port

• Minimal number of passive components

• Integrated chip-on-board LED

Applications

• Optical mice

• Optical trackballs

• Integrated input devices

• Battery-powered input device

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PixArt Imaging Inc.