ADNK-2703 Avago Technologies US Inc., ADNK-2703 Datasheet

ADNK-2703

Manufacturer Part Number

ADNK-2703

Description

A2700 Reference Design Kit

Manufacturer

Avago Technologies US Inc.

Series

-r

Datasheets

1.ADNK-2700.pdf (39 pages)

2.ADNK-2703.pdf (8 pages)

Specifications of ADNK-2703

Main Purpose

Reference Design, Optical Mouse

Embedded

Utilized Ic / Part

ADNS-2700

Primary Attributes

Secondary Attributes

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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ADNK-2703

One Chip USB Mouse Designer’s Kit

Design Guide

Description

The Universal Serial Bus (USB) is an industry standard

serial interface between a computer and peripherals such

as mouse, joystick, keyboard, headset, etc. The ADNK-2703

design guide describes how a cost-effective USB optical

mouse can be built using the Avago Technologies ADNS-

2700 one chip USB optical mouse sensor. The document

starts with basic operation of USB optical mouse, followed

by the assembly recommendation, USB interface, OTP

configurations, system design considerations and applica-

tions circuits, BOM, and PCB layout in appendices.

ADNK-2703 consists of an ADNS-2700 USB reference de-

sign mouse, ADNS-2700 sensor along with the ADNS-5100

round lens or ADNS-5100-001 trim lens, the ADNS-5200

Clip, the HLMP-EG3E-XXXXX LED sample units and CD-

ROM with all relevant technical literatures and hardware

files. The on-chip One-Time-Programmable (OTP) memory

provides flexibility for various configurations on resolu-

tion mode, USB motion data reporting size, customizable

VID and PID. The ADNS-2700 sensor, the ADNS-5100 round

lens or ADNS-5100-001 trim lens, the ADNS-5200 Clip, and

the HLMP-EG3E-XXXXX LED data sheets are available from

Avago Technologies website: www.avagotech.com.

USB Mouse Basic

The ADNS-2700 is the primary navigation engine of the

USB optical mouse based on optical navigation technology

that measures changes in position by optically acquiring

sequential surface images (per frames) and mathemati-

cally determining the direction and magnitude of motion

movement. It contains an Image Acquisition System (IAS), a

Digital Signal Processor (DSP) and USB stream output. The

IAS acquires microscopic surface images via the lens. These

images are processed by the DSP to determine the direc-

tion and distance of motion. The DSP generates the 'x and

'y relative displacement values which are converted to USB

motion data via USB protocol to the computer to translate

into the motion of a cursor pointer on a screen display.

The Z-wheel movement is done in the traditional method

by encoding the quadrature signal of an optical sensor or

mechanical encoder. This design guide shows how to con-

nect to and manage the available configuration of mouse

hardware via OTP programming, as well as handle the USB

protocols as a standard way of reporting mouse move-

ment and button presses to the PC.

Features

x One chip USB mouse sensor

x USB 2.0 Low Speed Compliance

x 12 bits USB motion data reporting

x Meets HID Revision 1.11

x Single 5.0 volts power supply

x High speed motion detection at 30 inches per second

x Input buttons: 3 buttons

x Z-Wheel interface for vertical scroll

x Integrated oscillator

x Integrated USB D- pull-up resistor

x Product string is set to “USB Optical Mouse”

x On-chip OTP memory for device configuration

Figure 1. ADNS-2700 3 button Optical Mouse Hardware Block Diagram

Z WHEEL

PORT

USB

(ips) and acceleration up to 8 g

flexibility without any external software driver:

– Programmable resolution from 500 to 1250 counts

– Programmable sensor orientation

– Programmable VID and PID.

LED

per inch (cpi) with 250 cpi step.

XY_LED

D+

DRIVE

OSCILLATOR

LED

CONTROL AND IO PROCESSOR

PROCESSOR

IMAGE

ON RESET

POWER

VDDA 5

GND

BUTTONS

POWER

5 VOLT

Related parts for ADNK-2703

ADNK-2703 Summary of contents

Page 1

... USB interface, OTP configurations, system design considerations and applica- tions circuits, BOM, and PCB layout in appendices. ADNK-2703 consists of an ADNS-2700 USB reference de- sign mouse, ADNS-2700 sensor along with the ADNS-5100 round lens or ADNS-5100-001 trim lens, the ADNS-5200 Clip, the HLMP-EG3E-XXXXX LED sample units and CD- ROM with all relevant technical literatures and hardware files ...

Page 2

... ADNS-5100 round lens according to usage instructions above. Some details on ADNK-2703 The ADNK-2703 reference design mouse unit allows users to evaluate the performance of the Optical Tracking Engine (sensor, lens, Led assembly clip, Led) over a USB protocol. The optical mouse uses the ADNS-2700. This kit also enables users to understand the recommended mechanical assembly ...

Page 3

Caution: The lens is not permanently attached to the sensor and will drop out of the assembly. Figure 4. Exploded view drawing of optical tracking engine with ADNS-2700 optical mouse sensor. 3 LED LED Clip ADNS-2700 (Sensor) Customer supplied PCB ...

Page 4

... USB cable. (See Figure 4) Unscrewing the one screw located at the base of the unit can open the ADNK-2703 unit. Lifting and pulling the PCB out of the base plate can further disas- semble the mouse unit. ...

Page 5

...

Page 6

Appendix B: Bill of Materials for Components Shown on schematic No Description 1 LED Clip 2 Black wire single core 3 Cable - USB Cable A Type 5P 4 Capacitor Ceramic 0603 C0G Capacitor Aluminium Electrolytic ...

Page 7

Appendix C: PCB Layout Figure C1. PCB Schematic (Bottom Layer) 7 Figure C2. PCB Schematic (Top Overlay) ...

Page 8

... ADNS-5200 LED Assembly Clip Data Sheet d. HLMP-EG3E Red LED Data Sheet e. 3D Model IGES Files Hardware Support Files ADNK-2703 BOM List a. ADNK-2703 Schematic b. IGES Base Plate Feature File c. Gerber File Software Support Files a. OTP Programming Reference Software b. USB Mouse Programming Guide Applications Note For product information and a complete list of distributors, please go to our web site: Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries ...

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