FAB2210 Datasheet, PDF (33/35 Pages) Fairchild Semiconductor – Audio Subsystem with Class-G Headphone and 3.3W Mono Class-D Speaker with Dynamic Range Compression

Applications Information
Layout Considerations
General layout and supply bypassing play a major role
in analog performance and thermal characteristics.
Fairchild provides a demonstration board to guide layout
and aid device evaluation. A graphical user interface
software program allows control of the I²C registers to
optimize the performance of the device in various
applications. For the best results, follow the steps and
recommended routing rules listed below.
Recommended Routing/Layout Rules
 Do not run analog and digital signals in parallel.
 Use separate analog and digital power planes to
supply power.
 Traces should run on top of the ground plane at all
times.
 No trace should run over ground/power splits.
 Avoid routing at 90-degree angles.
 Place bypass capacitors within 2.54mm (0.1
inches) of the device power pin.
 Minimize all trace lengths to reduce series
inductance.
© 2011 Fairchild Semiconductor Corporation
FAB2210 • Rev. 1.1.1
33
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