A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the CAN bus traces as short as possible and away from noise sources. Use a common mode choke to filter out common mode noise.
Use a shielded cable for the CAN bus, and ensure the PCB is properly grounded. Add a common mode choke and a TVS diode for ESD protection. Follow the recommended layout and keep the CAN bus traces away from noise sources.
The maximum cable length depends on the bit rate and the type of cable used. For a 500 kbps bit rate, the maximum cable length is approximately 40 meters. For a 1 Mbps bit rate, the maximum cable length is approximately 10 meters.
Use a CAN bus analyzer to monitor the bus traffic and identify errors. Check the termination resistors, cable connections, and PCB layout for any issues. Verify the bit rate and node configuration are correct.
The power consumption of the TJA1080 in sleep mode is typically around 10 μA. However, this value can vary depending on the specific application and the mode of operation.
TJA1080ATS/2/T,118 datasheet
by NXP Semiconductors
