PAW3702DL-TXNT Datasheet, PDF (32/33 Pages) Pixart Imaging Inc. – 3in1 SOC Low Power 2.4GHz Wireless Optical Mouse

PixArt Imaging Inc.
PAW3702DL-TXNT General Datasheet
3in1 SOC Low Power 2.4GHz Wireless Optical Mouse
5.2 Design Guidelines
5.2.1 Layout Design
Taking precaution in printed circuit layout is critical in optimizing the design to minimize parasitical capacitance and line
inductance. The following layout guidelines are recommended to achieve optimum performance.
1. Ensure that the RF 50ohm trace comes with GND continuation.
2. Place the ceramic bypass capacitors as near as possible to the input/output pins.
3. All feedback signals must first go through regulator capacitors.
4. Place the crystal closely to the oscillator pins.
5. Ensure that the ground plane under the oscillator and its components are of good quality.
6. Do not route any digital-signal lines on the other side of the PCB that under the RF trace and crystal area.
7. Keep other digital signal lines, especially clock lines and frequently switching signal lines, as far away from
crystal/analog/RF connections as possible.
8. Place at least 9 GND vias directly under IC thermal PAD for good grounding and thermal dissipation.
Version 0.61 | 18 Aug 2016 | A1002AEN
PixArt Imaging Inc. http://www.pixart.com
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