Data Sheet
ADNS-2710 Single Chip USB Optical Mouse Sensor
Description
The ADNS-2710 is a compact, one chip USB optical mouse sensor designed for implementation of a non-mechanical tracking engine in computer mice.
It is based on optical navigation technology that measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement.
The sensor is in an 8-pin optical package that is designed to be used with the ADNS-5110-001 trim lensPS "%/4MFOTBOEUIF)-.1&(&3FE-&% Together, these parts provide a complete BOEDPNQBDU mouse sensor. There are no moving parts BOEQSFDJTJPO optical alignment is not required, thus faciliUBUJOH high volume assembly.
The output format is USB. This device meets HID Revision 1.11 specification and is compatible with USB Revision 2.0 specification.
Frame rate is varied internally to the sensor to achieve tracking and speed performance, eliminating the need for the use of many registers.
Default resolution is specified as 1000 counts per inch, with rates of motion up to 30 inches per second.
A complete mouse can be built with the addition of a PC board, switches and Z-wheel, plastic case and cable.
NOTE: ADNS-2710 will be referred to as "sensor", ADNS-5110001 as " trim lens" and HLMP-EG3E as "LED" hereafter.
Features
One chip USB mouse sensor USB 2.0 Low Speed Compliance 12 bits USB motion data reporting Meets HID Revision 1.11 Single 5.0 volts power supply High speed motion detection at 30 inches per second
(ips) and acceleration up to 8 g Input buttons: 3 buttons Z-Wheel interface for vertical scroll Integrated oscillator Integrated USB D- pull-up resistor Product string is set to “USB Optical Mouse” On-chip OTP memory for device configuration
flexibility without any external software driver:
– Programmable resolution from 500 to 1250 counts per inch (cpi) with 250 cpi step.
– Programmable sensor orientation
– Programmable VID and PID.
Applications
Corded optical mice Trackballs Integrated input devices
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail:
[email protected]
PixArt Imaging Inc.
ADNS-2710 Single Chip USB Optical Mouse Sensor
Theory of Operation
The sensor is based on Optical Navigation Technology. 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 and illumination system provided by the trim lens. The clip and 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 which are converted to USB motion data.
Package Pinout
A2710 XYYWWZE
SW 5 GND 6
D- 7 D+ 8
4 ZA 3 ZB 2 VDDA5 1 XY_LED
Figure 1. Device Pinout
Table 1. Pin Name Description
Pin Name Input/Output Description
XY_LED VDDA5 ZB ZA SW
I – I I –
XY_LED 5-Volt Power Z-Wheel quadrature input Z-Wheel quadrature input 3-in-1 button pin. Do not force any voltage into this pin
GND – D- I/O D+ I/O
Ground USB D- line USB D+ line
A2710 XYYWWZE
Figure 2. Package Outline Drawing
CAUTION: It is advised that normal static precautions be taken in handling and assembling of this component to prevent damage and/or degradation which may be induced by ESD.
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc. 2 E-mail:
[email protected]
PixArt Imaging Inc.
ADNS-2710 Single Chip USB Optical Mouse Sensor
Overview of Optical Mouse Sensor Assembly
Pixart provides an IGES file drawing describing the base plate molding features for lens and PCB alignment. The sensor is designed for mounting on a through-hole PCB. There is an aperture stop and features on the package that align to the lens. The lens provides optics for the imaging of the surface as well as the illumination of the surface at the optimum angle. Features on the lens align it to the sensor, base plate, and clip with the LED. The clip holds the LED in relation to the lens. The LED must be inserted into the clip and the LED’s leads formed prior to loading on the PCB.
Figure 3. Recommended PCB Mechanical Cutouts and Spacing
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc. E-mail:
[email protected]
3
PixArt Imaging Inc.
TOP VIEW
ADNS-2710 Single Chip USB Optical Mouse Sensor
33.45 1.317
Pin # 1 A
A
13.10 0.516
CROSS SECTION SIDEVIEW
SENSOR LENS LED
0.05 Gaps between sensor 0.002 package and top of PCB
PCB
LED CLIP
ALIGNMENT POST (Optional)
10.60 2.40 Bottom of lens 0.417 0.094 flange to surface
7.45 Top of PCB to surface 0.293 NOTE: Dimensions in mm/Inches Imp.