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The efficiency of the AD8232 can be compromised by the DC Bias parameter of the ceramic capacitors?

Question asked by ever.q21@gmail.com on Mar 7, 2018
Latest reply on Apr 4, 2018 by ever.q21@gmail.com

Hello Gustavo.Castro  I have a doubt that I would like to consult with you.

I am currently working on a project where I am using the AD8232 to measure ECG signals, to then make diagnoses through algorithms. I was able to capture the ECG without problems, although with some noise.
My question is how the DC Bias parameter of the ceramic capacitors of the filters used in the circuit can affect the circuit. If I make an inappropriate choice, could this contribute to the noise?
For the moment my doubt is focused on this aspect since with other stages of the circuit I have been solving the problems that have been expressed.
In the circuit that I develop, I use the cutting frequencies from 0.05Hz to 115Hz. Since you need to focus on that range of frequencies.

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