ADNS-7550 Avago Technologies US Inc., ADNS-7550 Datasheet - Page 5

• Manufacturer Part Number: ADNS-7550
• Description: Optical Mouse Sensor,DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-7550

• Mounting Style: Through Hole
• Termination Style: Solder Pin
• Supply Voltage: 5 V
• Operating Temperature Range: 0 C to + 40 C
• Product: Optical
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-2180; ADNS-7550

Assembly Recommendation
1. Insert
2. Wave-solder the entire assembly in a no-wash solder
3. Place the lens onto the base plate. Care must be taken
4. Remove the protective kapton tapes from the optical
5. Insert the PCB assembly over the lens onto the base
6. Optional: The lens can be permanently locked to the
Figure 5. Recommended PCB mechanical cutouts and spacing
5
sensor and all other electrical components into the
application PCB.
process utilizing a solder fixture. The solder fixture
is needed to protect the sensor during the solder
process. The fixture should be designed to expose
the sensor leads to solder while shielding the optical
aperture from direct solder contact.
to avoid contamination on the optical surfaces.
aperture of the sensor and VCSEL respectively. Care
must be taken to keep contaminants from entering
the aperture.
plate. The sensor package should self-align to the lens.
The optical position reference for the PCB is set by the
base plate and lens. The alignment guide post of the
lens locks the lens and integrated molded lead-frame
DIP sensor together. Note that the PCB motion due to
button presses must be minimized to maintain optical
alignment.
sensor package by melting the lens’ guide posts over
the sensor with heat staking process.
the
integrated
molded
lead-frame
DIP
7. Tune the laser output power from the VCSEL to meet
8. Install the mouse top case. There must be a feature in
Design considerations for improving ESD Performance
For improved electrostatic discharge performance,
typical creepage and clearance distance are shown in
the table below. Assumption: base plate construction as
per the Avago supplied IGES file and ADNS-6150, ADNS-
6160-001 or ADNS-6170-002 lens:
Note that the lens material is polycarbonate and
therefore, cyanoacrylate based adhesives or other
adhesives that may damage the lens should NOT be
used.
Lens
Creepage
Clearance
the Eye Safe Class I Standard as detailed in the LASER
Power Adjustment Procedure.
the top case (or other area) to press down onto the
sensor to ensure the sensor and lenses are interlocked
to the correct vertical height.
ADNS-6150
12.0 mm
2.1 mm
ADNS-6160-001
13.50 mm
1.28 mm
20.30 mm
ADNS-6170-002
1.28 mm