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10.1.4 Module Layout Recommendations
shows layer 1 and layer 2 of the TI module layout.
Layer 1
Layer 2 (Solid GND)
Figure 10-3. TI Module Layout
Follow these module layout recommendations:
• Ensure a solid ground plane and ground vias under the module for stable system and thermal dissipation.
• Do not run signal traces under the module on a layer where the module is mounted.
• Signal traces can be run on a third layer under the solid ground layer and beneath the module mounting.
• Run the host interfaces with ground on the adjacent layer to improve the return path.
• TI recommends routing the signals as short as possible to the host.
10.1.5 Thermal Board Recommendations
The TI module uses µvias for layers 1 through 6 with full copper filling, providing heat flow all the way to the
module ground pads.
TI recommends using one big ground pad under the module with vias all the way to connect the pad to all
ground layers (see
).
WL1801MOD, WL1805MOD, WL1831MOD, WL1835MOD
SWRS152N – JUNE 2013 – REVISED APRIL 2021
Copyright © 2021 Texas Instruments Incorporated
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