A good PCB layout practice is to keep the analog and digital grounds separate, use a solid ground plane, and keep the signal traces short and away from noise sources. Additionally, use a common mode choke or ferrite bead to filter the output.
Use a high-quality, low-ESR capacitor (e.g., 10uF ceramic) as close as possible to the device's power pins. Add additional decoupling capacitors (e.g., 100nF) near the device's analog and digital power pins. Ensure the power supply is stable and within the recommended voltage range.
The maximum cable length depends on the specific application and environment. As a general guideline, the DS26LV31TM/NOPB's LVDS output can drive cables up to 10 meters (33 feet) long, but this may vary depending on the cable quality, noise environment, and signal frequency.
Check the clock output frequency and amplitude using an oscilloscope. Verify the clock input frequency and amplitude meet the device's requirements. Ensure the clock output is properly terminated and the load capacitance is within the recommended range.
Ensure good airflow around the device, and consider using a heat sink or thermal pad if the device is expected to operate in high-temperature environments. Keep the device's junction temperature below 150°C to ensure reliable operation.
DS26LV31TM/NOPB datasheet
by Texas Instruments
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