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MAX4079

Complete Audio/Video Backend Solution

Maxim Integrated 

Complete Audio/Video

Backend Solution

Layout and Grounding

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

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.

+5V

AOUTL

LINP

LINN

AUDIO

DAC

VCM ~2.5V

AOUTR

RINP

RINN

LEFT AUDIO

CHANNEL

RIGHT AUDIO

CHANNEL

MAX4079

Figure 3. Single-Ended Audio Inputs

AOUTL

AOUTR

VBIAS

R

R

R

R

VBIAS

R

R

R

R

LINP

LEFT AUDIO

CHANNEL

LINN

MAX4079

RINP

RIGHT AUDIO

CHANNEL

RINN

Figure 5. Biasing Single-Ended Audio Inputs

AOUTL

VCM

R1

LINP

LINN

C1

R1

MAX4079

Figure 4. Filtering Single-Ended Audio Inputs

INPUT

OUTPUT

40μs/div

Figure 6. Vertical Sync Interval

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