Crystal layout considerations for WirelessUSB Lp
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Apr 04, 2010
07:17 AM
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Apr 04, 2010
07:17 AM
Question: What are the crystal layout considerations for a WirelessUSB LP based system?
Answer:
The crystal layout is best if the following conditions are met:
■ Crystal and radio are on same side of PCB
■ Crystal is placed near the crystal pin on the radio
■ Crystal trace paths are as short as possible
■ Match crystal trace paths for length and parasitic capacitance
■ Avoid vias on crystal traces
■ Isolate the crystal from noise sources
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- rf transceivers
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