6
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. This sensor package is only quali ed for wave-solder
process.
5. Wave solder the entire assembly in a no-wash solder
process utilizing solder xture. The solder xture
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 xture 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 rst 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.
Figure 6. Block diagram of ADNS-5050 optical mouse sensor.
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.
POWER AND CONTROL
SERIAL PORT AND REGISTERS
IMAGE ARRAY
DSP
OSCILLATOR
LED DRIVE
REGO
GND
VDD5
NCS
ADNS-5050
SCLK
SDIO
NRESET
XY_LED
LED
LED CLIP
SENSOR
CUSTOMER
SUPPLIED PCB
LENS (SHOWING
ADNS-5100-001)
CUSTOMER SUPPLIED
BASE PLATE WITH
RECOMMENDED
ALIGNMENT FEATURES
PER IGES DRAWING
