Laser Sensor. ADNS-8020 Datasheet

ADNS-8020 Sensor. Datasheet pdf. Equivalent


PixArt ADNS-8020
Data Sheet
ADNS-8020
Track-on-Glass Laser Sensor
Description
The ADNS-8020 is the Track-on-Glass Laser navigation
sensor empowered by PixArt Imaging that enables
navigation on all surface types including glass. It is
capable of sensing mouse motion with velocities up to 30
inches per second (ips) on non-glass surfaces, 10 inches
per second (ips) on glass and acceleration up to 8g.
The ADNS-8020 has dual power supplies of 1.8V and 3.0V,
which enables wireless application to lengthen battery
life. It integrates both sensor and VCSEL chips in a single
16-pin molded lead-frame DIP package. It is designed to
be used with ADNS-8100-002 lens to form a complete la-
ser illuminated navigation system. These parts provide a
complete and compact navigation system without mov-
ing parts and laser calibration process is NOT required in
the complete mouse form, thus facilitating high volume
assembly. Performance is not guaranteed if the ADNS-
8020 sensor is paired with a lens other than the ADNS-
8100-002. Additionally, performance is not guaranteed if
the ADNS-8100-002 lens is used in conjunction with a dif-
ferent navigation sensor other than the ADNS-8020.
Theory of Operation
The sensor is based on Track-on-Glass and Laser
technologies, which measure changes in position by op-
tically acquiring sequential surface images (frames) and
mathematically determining the direction and magnitude
of movement. It contains an Image Acquisition System
(IAS), a Digital Signal Processor (DSP), and a four wire se-
rial port. The IAS acquires microscopic surface images via
the lens and illumination system provided by the VCSEL.
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 mi-
crocontroller reads the Δx and Δy data information from
the sensor serial port, then translates the data into USB
or RF signals before sending them to the host PC or game
console.
Features
Track on Glass and Laser technologies
16-pin molded lead-frame DIP package with integrated
VCSEL
Dual power operation, 1.8V and 3V
High speed motion detection up to 30ips on non-glass
surfaces and 10ips on glass surface, and acceleration
up to 8g
Enhanced SmartSpeed self-adjusting frame rate for
optimum performance
Motion detect pin output
16-bit motion data registers
Internal oscillator – no resonator nor crystal needed
Programmable resolution up to 1600cpi
Four wire serial port
Programmable rest downshift and rest period times
Minimal number of passive components
Compliance to IEC/EN 60825-1 Eye Safety
Class 1 laser power output level
On-chip laser fault detect circuitry
Advanced technology 832-865 nm wavelength VCSEL
Single-mode lasing operation
Applications
Wired and Wireless Laser Mice
Optical trackballs
NOTE: The ADNS-8020 will be referred as “sensor” and
the ADNS-8100-002 as “lens” hereafter.
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: fae_service@pixart.com.tw
1


ADNS-8020 Datasheet
Recommendation ADNS-8020 Datasheet
Part ADNS-8020
Description Track-on-Glass Laser Sensor
Feature ADNS-8020; Data Sheet ADNS-8020 Track-on-Glass Laser Sensor Description The ADNS-8020 is the Track-on-Glass L.
Manufacture PixArt
Datasheet
Download ADNS-8020 Datasheet




PixArt ADNS-8020
PixArt Imaging Inc.
Track-on-Glass Laser Sensor
Pinout
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Name
-VCSEL
XY_LASER
NC
NCS
MISO
SCLK
MOSI
MOTION
VDDIO
DGND
VDD18
VDD3
AGND
VDD3
LASER_NEN
+VCSEL
Description
Negative terminal of VCSEL
Laser driver output
No Connection
Chip select (Active Low Input)
Serial data output (Master In/Slave Out)
Serial clock input
Serial data input (Master Out/Slave In)
Motion Detect (Active Low Output)
IO Voltage input (1.65-3.3V)
Digital Ground
1.8V Input
3V Input
Analog Ground
3V Input
Laser enable (Active Low Output)
Positive terminal of VCSEL
Pin 1
Pin 16
Date
Code
Product
Number
Pin 8
Item
Product Number
Date Code
Lot Code
Marking
A8020
XYYWWZV
VVV
Remarks
X = Subcon Code
YYWW = Date Code
Z = Sensor Die Source
V = VCSEL Die Source
Numeric
Pin 9
Lot Code
Figure 1. Device pin-out
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: fae_service@pixart.com.tw
2



PixArt ADNS-8020
PixArt Imaging Inc.
Track-on-Glass Laser Sensor
NOTES:
1.0 Dimension in millimeters / inches
2.0 Linear dimension general tolerance: ± 0.10mm unless specified otherwise
3.0 Bracket in bracket () is for reference only
4.0 Maximum flash: 0.20mm
5.0 Lead pitch tolerance: ± 0.15mm
6.0 Angular tolerance: ± 3.0°
7.0 Coplanarity of lead: 0.10mm
8.0 Reference number: LSR_INT_16B_PKG_009
Figure 2. Package outline drawing
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: fae_service@pixart.com.tw
3







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