Preliminary Development
–
BARIX IP AUDIO MODULE 400
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V 02.20
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9.April.2018
Layout Guidelines
12
•
Although all audio inputs are DC-decoupled consider the use of current
limiting resistors in the audio signal path close to the devices connectors. It
is a good procedure to also limit the max input voltage to 3.3 volts using
zener diodes (ZDi) right after the resistor.
•
Carrier PCB Power
and Signal
Domains
Relevant excerpt from previous chapter “General Rules”:
•
All available ground pins of the Barix Audio Module should be attached
to their respective ground domain.
•
You MUST provide analog ground to the PCB and that ground must be
connected to the power supply ground externally to the IPAM (on the
carrier PCB)
•
Avoid signal trace routing crossing domain borders (see graphic above).
