A good PCB layout for the DS3486MX/NOPB involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, it's recommended to use a shielded cable for the HDMI output to reduce EMI.
To ensure reliable operation of the DS3486MX/NOPB over the entire operating temperature range, it's essential to follow proper thermal design guidelines, such as providing adequate heat sinking, using a thermally conductive material for the PCB, and ensuring good airflow around the device.
The recommended power sequencing for the DS3486MX/NOPB involves powering up the device in the following order: VCC, then AVCC, and finally DVCC. The voltage ramp-up time should be slower than 10 ms/V to prevent latch-up and ensure reliable operation.
To troubleshoot issues with the DS3486MX/NOPB, start by verifying the power supply voltages and ensuring that the device is properly configured. Check the input signals and verify that they meet the specified requirements. Use an oscilloscope to inspect the output signals and look for any signs of distortion or noise. If the issue persists, consult the datasheet and application notes for further guidance.
When using the DS3486MX/NOPB in a system with multiple HDMI sources and sinks, it's essential to ensure that the device is properly configured to handle the multiple sources and sinks. This may involve using a HDMI switch or multiplexer to select the active source, and ensuring that the device is properly synchronized with the selected source.
DS3486MX/NOPB datasheet
by Texas Instruments
Findchips
Findchips