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 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.

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.

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

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.

PixArt Imaging Inc.

ADNS-5050 Optical Mouse Sensor