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ADNV-6340 Datasheet(PDF) 4 Page - AVAGO TECHNOLOGIES LIMITED |
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ADNV-6340 Datasheet(HTML) 4 Page - AVAGO TECHNOLOGIES LIMITED |
4 / 52 page 4 Figure 3. Recommended PCB mechanical cutouts and spacing Assembly Recommendation 1. Insert the sensor and all other electrical components into the application PCB (main PCB board and VCSEL PCB board). 2. Wave solder the entire assembly in a no-wash solder process utilizing a solder fixture. The solder fixture is needed to protect the sensor during the solder pro- cess. 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. 3. Place the lens onto the base plate. 4. Remove the protective kapton tape from the optical aperture of the sensor. Care must be taken to keep contaminants from entering the aperture. 5. Insert the PCB assembly over the lens onto the base plate. The sensor aperture ring should self-align to the lens. 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. 6. Remove the protective kapton tape from the VCSEL. 7. Insert the VCSEL assembly into the lens. 8. Slide the clip in place until it latches. This locks the VCSEL and lens together. 9. Tune the laser output power from the VCSEL to meet the Eye Safe Class I Standard as detailed in the LASER Power Adjustment Procedure. 10. Install the mouse top case. There must be a feature in the top case (or other area) to press down onto the sensor to ensure the sensor and lens are interlocked to the correct vertical height. |
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