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ADNS-2700 Schematic ( PDF Datasheet ) - PixArt

Teilenummer ADNS-2700
Beschreibung Single Chip USB Optical Mouse Sensor
Hersteller PixArt
Logo PixArt Logo 




Gesamt 30 Seiten
ADNS-2700 Datasheet, Funktion
Data Sheet
ADNS-2700
Single Chip USB Optical Mouse Sensor
Description
The ADNS-2700 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-5100-001 trim lens, LED clip
and the HLMP-EG3E-xxxxx LED. Together, these parts
provide a complete and compact mouse sensor. There
are no moving parts and precision optical alignment is
not required, thus facilitating 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-2700 will be referred to as "sensor", ADNS-5100-
001 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.






ADNS-2700 Datasheet, Funktion
PixArt Imaging Inc.
ADNS-2700 Single Chip USB Optical Mouse Sensor
LED
Clip
Sensor
Customer supplied PCB
Trim Lens
Customer supplied base plate with
recommended alignment features
per IGES drawing
IMPORTANT NOTE: P-bin LED or better is recommended.
Figure 6. Exploded View of Assembly
PCB Assembly Considerations
1. Insert the sensor and all other electrical components
into PCB.
2. Insert the LED into the assembly clip and bend the
leads 90 degrees.
3. Insert the LED clip assembly into PCB.
4. This sensor package is only qualified for wave-solder
process.
5. Wave solder the entire assembly in a no-wash solder
process utilizing solder fixture. The solder fixture is
needed to protect the sensor during the solder process.
It also sets the correct sensor-to-PCB distance as the
lead shoulders do not normally rest on the PCB surface.
The fixture should be designed to expose the sensor
leads to solder while shielding the optical aperture
from direct solder contact.
6. Place the lens onto the base plate.
7. Remove the protective Kapton tape from optical
aperture of the sensor. Care must be taken to keep
contaminants from entering the aperture. Recommend
not to place the PCB facing up during the entire mouse
assembly process. Recommend to hold the PCB first
vertically for the Kapton removal process.
8. Insert PCB assembly over the lens onto the base plate
aligning post to retain PCB assembly. The sensor
aperture ring should self-align to the lens.
9. The optical position reference for the PCB is set by the
base plate and lens. Note that the PCB motion due to
button presses must be minimized to maintain optical
alignment.
10. Install mouse top case. There MUST be a feature in
the top case to press down onto the PCB assembly to
ensure all components are interlocked to the correct
vertical height.
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.
6

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ADNS-2700 pdf, datenblatt
PixArt Imaging Inc.
VOH (min)
VIH (min)
VIL (max)
VOL (max)
GND
Figure 11. Data Signal Voltage Levels
ADNS-2700 Single Chip USB Optical Mouse Sensor
One Bit Time (1.5 MB/s)
Minimal Reflectance
and Ringing
tLST
Differential Input Voltage Range
Differential Output
Crossover
Voltage Range
-1.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
Input Voltage Range (volts)
Figure 12. Differential Receiver Input Sensitivity vs. Common Mode Input Range
4.6
TPERIOD
TDJR TDJR1
Consecutive Transitions
N * TPERIOD + TDJR1
Figure 13. Receiver Jitter Tolerance
Paired Transitions
N * TPERIOD + TDJR2
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.
12
TDJR2

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