SD384EVK National Semiconductor, SD384EVK Datasheet - Page 12

• Manufacturer Part Number: SD384EVK
• Description: BOARD EVAL CABLE EQ HD/SD SDI
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of SD384EVK

• Main Purpose: Interface, Cable Equalizer
• Embedded: No
• Utilized Ic / Part: LMH0384
• Primary Attributes: 3 Gbps HD/SD SDI
• Secondary Attributes: 3.135 V ~ 3.465 V Supply
• Silicon Manufacturer: National
• Silicon Core Number: LMH0384
• Kit Application Type: Interface
• Application Sub Type: Cable Equalizer
• Kit Contents: Board Docs
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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tween the BNC and the equalizer to ensure that the charac-
teristic impedance of this trace is 75Ω. Please consider the
following PCB recommendations:
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Use surface mount components, and use the smallest
components available. In addition, use the smallest size
component pads.
Select trace widths that minimize the impedance
mismatch between the BNC and the equalizer.
Select a board stack up that supports both 75Ω single-
ended traces and 100Ω loosely-coupled differential
traces.
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Place return loss components closest to the equalizer
input pins.
Maintain symmetry on the complimentary signals.
Route 100Ω traces uniformly (keep trace widths and trace
spacing uniform along the trace).
Avoid sharp bends in the signal path; use 45° or radial
bends.
Place bypass capacitors close to each power pin, and use
the shortest path to connect equalizer power and ground
pins to the respective power or ground planes.