CS4225 Datasheet, PDF (21/30 Pages) Cirrus Logic – Digital Audio Conversion System

Digital
Ground
Plane
> 1/8"
+5V
Ferrite
Bead
Ground
Connection
CS4225
Analog
Ground
Plane
CS4225
Note that the CS4225
is oriented with its
digital pins towards the
digital end of the board.
Digital
Supply
CPU & Digital
Logic
Codec
digital
signals
Codec
analog
signals &
components
Figure 9. Suggested Layout Guideline
1.0 uF
0.1 uF
1
Digital
Supply
0.1 uF
1.0 uF
1
= vias through to
ground plane
FILT
0.2 uF
= vias through to
ground plane
FILT
Analog ^{0.1 uF}
Supply
1.0 uF
DS86PP8
0.1 uF
1.0 uF
Analog ^{0.1 uF}
Supply ^{1.0 uF}
Figure 10. Recommended Decoupling Capacitor Layout
0.2 uF
0.1 uF
1.0 uF
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