MAX4079 Maxim Integrated Products, MAX4079 Datasheet - Page 10

• Manufacturer Part Number: MAX4079
• Description: Complete Audio/Video Backend Solution
• Manufacturer: Maxim Integrated Products

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Complete Audio/Video
Backend Solution
For optimal performance, stitch ground vias between the
narrow adjacent signal traces to minimize crosstalk.
Avoid running video traces parallel to high-speed data
lines. The MAX4079 provides separate ground connections
Figure 3. Single-Ended Audio Inputs
Figure 5. Biasing Single-Ended Audio Inputs
10
A
A
OUTL
OUTR
______________________________________________________________________________________
AUDIO
+5V
DAC
R
R
R
R
V
V
A
A
BIAS
OUTR
BIAS
OUTL
V
CM
~2.5V
R
R
R
R
Layout and Grounding
RINP
RINN
LINN
LINP
RINP
RINN
LINN
LINP
LEFT AUDIO
CHANNEL
RIGHT AUDIO
CHANNEL
MAX4079
LEFT AUDIO
CHANNEL
MAX4079
RIGHT AUDIO
CHANNEL
for video and audio supplies. For best performance use
separate ground planes for each of the ground returns,
and connect all ground planes together at a single point.
Refer to the MAX4079 Evaluation Kit for a proven circuit
board layout example.
Figure 4. Filtering Single-Ended Audio Inputs
Figure 6. Vertical Sync Interval
A
V
OUTL
CM
R1
R1
40μs/div
C1
OUTPUT
INPUT
LINN
LINP
MAX4079