Tool/software:
We are seeking technical support regarding the Sigma-Delta modulator IC "AMC1305." We are experiencing a noise issue in one of our products that we believe is related to this IC. It is being used to digitize three-phase 480V voltages. Intermittently, we observe noise coupled to the output of this IC.
Our questions are as follows:
- Does the AMC1305 have any inherent noise immunity features? Given that this IC operates in a fairly noisy environment, what are the best practices for decoupling noise from it? Are there any specific layout recommendations?
- If noise couples to the DVDD pin, what impact would this have on the IC's digital output?
We can provide additional measurement data to help further clarify the situation upon request.
