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PDF ADNS-5050 Data sheet ( Hoja de datos )
| Número de pieza | ADNS-5050 | |
| Descripción | Optical Mouse Sensor | |
| Fabricantes | AVAGO TECHNOLOGIES LIMITED | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ADNS-5050 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
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ADNS-5050
Optical Mouse Sensor
Data Sheet
www.DataSheet4U.com
Description
The ADNS-5050 is a mainstream, small form factor optical
mouse sensor. It is a user-friendly product with many
built-in features and optimized for LED-based corded
products.
The ADNS-5050 is capable of high-speed motion detection
– up to 30ips and 8g. In addition, it has an on-chip oscil-
lator and built-in LED driver to minimize external compo-
nents. Frame rate is also adjusted internally.
The ADNS-5050 along with the ADNS-5100/5100-001 lens,
ADNS-5200 clip and HLMP-ED80 LED form a complete and
compact mouse tracking system. There are no moving
parts, which mean high reliability and less maintenance
for the end user. In addition, precision optical alignment
is not required, facilitating high volume assembly.
The sensor is programmed via registers through a three-
wire SPI interface. It is housed in an 8-pin staggered dual
in-line package (DIP).
Theory of Operation
The ADNS-5050 is based on Optical Navigation Technol-
ogy, which measures changes in position by optically
acquiring sequential surface images (frames) and math-
ematically determining the direction and magnitude of
movement.
The ADNS-5050 contains an Image Acquisition System
(IAS), a Digital Signal Processor (DSP), and a three wire
serial port.
The IAS acquires microscopic surface images via the lens
and illumination system. These images are processed
by the DSP to determine the direction and distance of
motion. The DSP calculates the Δx and Δy relative dis-
placement values.
An external microcontroller reads the Δx and Δy informa-
tion from the sensor serial port. The microcontroller then
translates the data into PS2 or USB signals before sending
them to the host PC.
Features
• Small form factor, pin-to-pin compatible with
ADNS-5020-EN
• Register-to-register compatible with ADNS-5020-EN
• Built-in LED driver for simpler circuitry
• High speed motion detection at 30 ips and up to 8g
• Self-adjusting frame rate for optimum performance
• Internal oscillator – no clock input needed
• Default 500 cpi resolution, adjustable from 125 to 1375
cpi via 125 cpi step
• Operating voltage: 5V nominal
• Three-wire serial interface
• Only 4 capacitors and no transistor required
Applications
• Optical Mice
• Optical trackballs
• Integrated input devices
1 page  
ADNS-5200 (LED CLIP)
SENSOR
CUSTOMER SUPPLIED BASE PLATE
WITH RECOMMENDED ALIGNMENT
FEATURES PER IGES DRAWING
HLMP-ED80 (LED)
CUSTOMER SUPPLIED PCB
ADNS-5100 (LENS)
www.DataSheet4U.com
Figure 5. Exploded view drawing.
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. 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.
5. Place the lens onto the base plate.
6. 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.
7. 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.
8. 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.
9. 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.
ADNS-5050
NCS
VDD5 SCLK
GND IMAGE ARRAY SDIO
REGO DSP NRESET
OSCILLATOR
LED DRIVE
XY_LED
Figure 6. Block diagram of ADNS-5050 optical mouse sensor.
5 Page 
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
400 500 600 700
Wavelength (nm)
Figure 12. Relative wavelength responsivity.
800
900 1000
www.DataSheet4U.com
LED Mode
For optimized tracking performance, the LED is in DC
mode when motion is detected, and ADNS-5050 will pulse
the LED when the mouse is in idle state. To force the LED
into always DC mode, kindly refer to register 0x22.
Synchronous Serial Port
The synchronous serial port is used to set and read pa-
rameters in the ADNS-5050, and to read out the motion
information.
The port is a three wire serial port. The host micro-con-
troller always initiates communication; the ADNS-5050
never initiates data transfers. SCLK, SDIO, and NCS may be
driven directly by a micro-controller. The port pins may be
shared with other SPI slave devices. When the NCS pin is
high, the inputs are ignored and the output is tri-stated.
The lines that comprise the SPI port:
SCLK:
SDIO:
NCS:
Clock input. It is always generated by the master
(the micro-controller).
Input and Output data.
Chip select input (active low). NCS needs to be low
to activate the serial port; otherwise, SDIO will be
high Z, and SDIO & SCLK will be ignored. NCS can
also be used to reset the serial port in case of an
error.
Chip Select Operation
The serial port is activated after NCS goes low. If NCS
is raised during a transaction, the entire transaction is
aborted and the serial port will be reset. This is true for
all transactions. After a transaction is aborted, the normal
address-to-data or transaction-to-transaction delay is still
required before beginning the next transaction.To improve
communication reliability, all serial transactions should be
framed by NCS. In other words, the port should not remain
enabled during periods of non-use because ESD and EFT/B
events could be interpreted as serial communication and
put the chip into an unknown state. In addition, NCS must
be raised after each burst-mode transaction is complete to
terminate burst-mode. The port is not available for further
use until burst-mode is terminated.
Write Operation
Write operation, defined as data going from the micro-
controller to the ADNS-5050, is always initiated by the
micro-controller and consists of two bytes. The first byte
contains the address (seven bits) and has a“1”as its MSB to
indicate data direction. The second byte contains the data.
The ADNS-5050 reads SDIO on rising edges of SCLK.
NCS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
12
SCLK
SDIO
1 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
1 A6
Write Operation
11
SDIO DRIVEN BY MICRO-CONTROLLER
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet ADNS-5050.PDF ] | |
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