A good PCB layout for the LMH0001SQE/NOPB involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing the decoupling capacitors close to the device. A 4-layer PCB with a dedicated ground plane is recommended.
Proper termination for the LMH0001SQE/NOPB involves using a series resistor at the transmitter and a parallel terminator at the receiver. The value of the series resistor should be equal to the transmission line impedance, and the parallel terminator should be equal to the transmission line impedance divided by 2.
The maximum cable length supported by the LMH0001SQE/NOPB depends on the signal frequency and the type of cable used. As a general rule, the maximum cable length is limited to 10 meters at 1 Gbps and 5 meters at 3 Gbps. However, this can be extended using repeaters or active cables.
To troubleshoot signal integrity issues with the LMH0001SQE/NOPB, use an oscilloscope to measure the signal waveform and eye diagram. Check for signal attenuation, jitter, and ringing. Verify that the signal is within the specified voltage and current limits, and that the PCB layout and termination are correct.
While the LMH0001SQE/NOPB is optimized for 50-ohm systems, it can be used in non-50-ohm systems with some adjustments. However, this may require additional circuitry to match the impedance, and the device's performance may be affected.
LMH0001SQE/NOPB datasheet
by Texas Instruments
