I’m seeing noise at the output of my circuit which is beyond what I expect based on device specifications and calculations. I think this additional noise may be due to interference. What techniques can I apply to help reduce and/or eliminate this noise?

Question

I’m seeing noise at the output of my circuit which is beyond what I expect based on device specifications and calculations.  I think this additional noise may be due to interference.  What techniques can I apply to help reduce and/or eliminate this noise?

ESanz · Accepted Answer

Interference noise can get picked up by electronic systems and contribute to overall higher than expected noise. This interference can be due to natural sources such as lightening or other components in the system such as switching power supplies. AN-347 gives an in-depth explanation on this topic and describes shielding, guarding and grounding techniques that can be used to help mitigate these unwanted noise contributions)