AMC3311-Q1:Request for Root Cause Analysis and Countermeasures for EMC Issues

Tool/software:

We are conducting EMC testing on a PCB that utilizes the AMC3311-Q1 isolation amplifier for input/output signal processing, without an MCU.

During the tests, we observed the following issues:

1. Conducted Emission (CE)

   • Problem frequency range: 30MHz ~

     

2. Radiated Emission (RE)

   • Problem frequency range: 300MHz ~

     

The circuit is relatively simple and consists solely of the AMC3311-Q1.

We kindly request your support in analyzing the root cause of these emissions and providing recommended countermeasures to address them.