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ADNS-2051 Schematic ( PDF Datasheet ) - Agilent Technologies

Teilenummer ADNS-2051
Beschreibung Optical Mouse Sensor
Hersteller Agilent Technologies
Logo Agilent Technologies Logo 




Gesamt 30 Seiten
ADNS-2051 Datasheet, Funktion
Agilent ADNS-2051
Optical Mouse Sensor
Data Sheet
Description
The ADNS-2051 is a low cost
optical sensor used to implement a
non-mechanical tracking engine for
computer mice.
It is based on optical navigation
technology, which measures
changes in position by optically
acquiring sequential surface images
(frames) and mathematically deter-
mining the direction and magnitude
of movement.
The sensor is housed in a 16-pin
staggered dual inline package (DIP)
that is designed for use with the
HDNS-2100 Lens and HDNS-2200
Clip and HLMP-ED80 (639 nm LED
illuminator source). There are no
moving parts, and precision optical
alignment is not required,
facilitating high volume assembly.
The output format is two channel
quadrature (X and Y direction)
which emulates encoder photo-
transistors. The current X and Y
information are also available in
registers accessed via a serial port.
Default resolution is specified as
400 counts per inch (cpi), with
rates of motion up to 14 inches
per second (ips).
Resolution can also be pro-
grammed to 800 cpi.
The part is programmed via a two
wire serial port, through registers.
Theory of Operation
The ADNS-2051 is based on
Optical Navigation Technology.
It contains an Image Acquisition
System (IAS), a Digital Signal
Processor (DSP), a two-channel
quadrature output, and a two wire
serial port.
The IAS acquires microscopic
surface images via the lens and
illumination system provided by
the HDNS-2100, 2200, and
HLMP-ED80 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 that are
converted into two channel
quadrature signals.
Features
• Precise optical navigation tech-
nology
• No mechanical moving parts
• Complete 2D motion sensor
• Serial interface and/or
quadrature interface
• Smooth surface navigation
• Programmable frame speed up to
2300 frames per sec (fps)
• Accurate motion up to 14 ips
• 800 cpi resolution
• High reliability
• High speed motion detector
• No precision optical alignment
• Wave solderable
• Single 5.0 volt power supply
• Shutdown pin for USB suspend
mode operation
• Power conservation mode during
times of no movement
• On chip LED drive with regulated
current
• Serial port registers
– Programming
– Data transfer
• 16-pin staggered dual inline
package (DIP)
Applications
• Mice for desktop PCs,
workstations, and portable PCs
• Trackballs
• Integrated input devices






ADNS-2051 Datasheet, Funktion
Recommended Typical Application using SDIO Pins
VDD
D+
D-
GND
SHLD
VDD
0.1 µF
1.3 k
GND QA
VDD QB
Z-WHEEL
ENCODER
R
Z LED
4.7 µF
0.1 µF
7
VPP
11
VDD
13 D+ CYPRESS
CY7C63723A-PC
12 D-
P0.4 18
8 VREG
5 P1.0
P0.5 17
P0.6 16
14 P1.1
P0.7 15
1 P0.0
P0.3 4
L
P0.2 3
M
P0.1 2
R
BUTTONS
VSS 6
XTALOUT XTALIN
13
VDD
12 GND
10 GND
INTERNAL
IMAGE
SENSOR
HDNS-2100
LENS
SURFACE
XY_LED 6
HLMP-ED80
15 PD
16 SDIO
1 SCLK
OSC_IN 9
ADNS
2051
11
OSC_OUT
REFA 7
REFB 8
CERAMIC RESONATOR
18 MHz AVX
KBR-18-00-MSA
MURATA CSALS18M0X55-B0
0.1 µF
2.2 µF
R_BIN 14
XA XB YB YA
2345
R1
R1 VALUE
(k)
15.0
15.0
15.0
15.0
15.0
15.0 ~ 18.0
15.0 ~ 22.0
15.0 ~ 27.0
15.0 ~ 33.0
15.0 ~ 37.0
LED
BIN
K
L
M
N
P
Q
R
S
T
U
Figure 8. Application using SDIO pins.
Notes on Bypass Capacitors:
Caps for pins 7, 8 and 12, 13
MUST have trace lengths LESS
than 5 mm.
The 0.1 µF caps must be
ceramic.
Caps should have less than
5 nH of self inductance
Caps should have less than
0.2 ESR
Surface mount parts are
recommended.
Regulatory Requirements
Passes FCC B and worldwide
analogous emission limits
when assembled into a mouse
with unshielded cable and fol-
lowing Agilent recommenda-
tions.
Passes EN61000-4-4/IEC801-4
EFT tests when assembled into
a mouse with unshielded cable
and following Agilent recom-
mendations.
UL flammability level UL94 V-0.
Provides sufficient ESD creep-
age/clearance distance to avoid
discharge up to 15 kV when
assembled into a mouse ac-
cording to usage instructions
above.
For eye safety consideration,
please refer to the technical
report available on the web site,
http://www.agilent.com
The 15.0 kresistor is deter-
mined by the absolute maxi-
mum rating of 50 mA for the
HLMP-ED80. The other resis-
tor values for brighter bins will
guarantee good signals with
reduced power.
6

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ADNS-2051 pdf, datenblatt
XA/YA
FIVE OR MORE
XB/YB
FOUR
XA/YA
XB/YB
THREE
XA/YA
XB/YB
TWO
XA/YA
XB/YB
ONE
XA/YA
XB/YB
133 µs
133 µs
X MOTION TO THE RIGHT
Y MOTION UP
133 µs
133 µs
133 µs
133 µs
133 µs
133 µs
267 µs
133 µs
133 µs
400 µs
133 µs
533 µs
667 µs
~ 667µs @ 1500 FRAMES/SECOND
ONE FRAME
Figure 16. Quadrature states per frame (400 cpi mode).
12

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