Hi all,
first let me introduce myself.
I am a French student working for my internship on noise in electronic circuits.
I have to redesign an ADC because it is perturbated by noise. A lot of filters are used on the existing circuit, but some strange things happen and keeo fuzzy in my mind.
2 ADCs are used with the same input. The good signal is included but hidden because of the noise.
The first thing is: on the figure attached, what is this curve at the beginnig? it looks like a capacitor discharge. How to solve this problem?
Secondly, I get an other curve coming later, and shifting over the time. I do not understand at all the origin of this problem.
Do you have any idea? The best would be to get a horizontal line...
In addition, what kind of general advice you can give me concerning noise in electronic systems? grounding, type of components to use...
Lastly, I will incorporate a digital circuit into the already existing analog one for the data acquisition. What kind of precautions do I have to take for the combination of digital/analogic circuits together?
Thank you very much for your help,
Regards,
Arnaud
first let me introduce myself.
I am a French student working for my internship on noise in electronic circuits.
I have to redesign an ADC because it is perturbated by noise. A lot of filters are used on the existing circuit, but some strange things happen and keeo fuzzy in my mind.
2 ADCs are used with the same input. The good signal is included but hidden because of the noise.
The first thing is: on the figure attached, what is this curve at the beginnig? it looks like a capacitor discharge. How to solve this problem?
Secondly, I get an other curve coming later, and shifting over the time. I do not understand at all the origin of this problem.
Do you have any idea? The best would be to get a horizontal line...
In addition, what kind of general advice you can give me concerning noise in electronic systems? grounding, type of components to use...
Lastly, I will incorporate a digital circuit into the already existing analog one for the data acquisition. What kind of precautions do I have to take for the combination of digital/analogic circuits together?
Thank you very much for your help,
Regards,
Arnaud
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