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Jonathan Harris

How Do You Analyze ADC Noise? Part 2

Jonathan Harris
jonharris0
jonharris0
2/3/2014 10:14:06 AM
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Re: frequency sweep
Again, very good point.  The discrepancies are small in this case compared with the magnitude of the measurement.  Thanks to you for the kind words.  I enjoy the questions and interactions.  Thanks!

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etnapowers
etnapowers
2/3/2014 10:05:52 AM
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Re: frequency sweep
@Jonathan: thank you for this post, the small discrepancies are for sure due to this cause, however if the discrepancies with the actual measured data are small compared to the expected order of magnitude of the measurement, the approximation is valid.

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jonharris0
jonharris0
1/13/2014 4:06:20 PM
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Re: frequency sweep
Indeed, good points.  The ideal nature of the calculations does lend itself to some small discrepancies with the actual measured data.  I am always happy when measured data lines up closely with my calculated values. :-)

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etnapowers
etnapowers
12/28/2013 3:33:22 AM
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Master
frequency sweep
I wonder if the error between theoretical and measured ADC noise depends on the frequency, due to capacitive or inductive effects that may appear as the operating frequency varies.

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etnapowers
etnapowers
12/28/2013 3:27:21 AM
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Master
relative error
I think that an engineer has to take care of the absolute and relative error when evaluating theoretically a ADC noise and then measuring it.

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More Blogs from Jonathan Harris
The topic of this blog came up while at the IMS show and one of my colleagues mentioned that I should discuss the ADIsimRF tool as a part of the series. I thought this was a marvelous idea. Ill have to precursor this discussion with the fact that I am actually an RF guy from my previous employment at an RF company which was my first position when I graduated from college.
One of the questions that appeared on one of the IMS blog posts was about the details of the demonstration I had set up at the Analog Devices booth.
The last and final day of the show is usually has the most relaxed atmosphere and this year that proved to be the case once again. It is the shortest day of the show lasting from just 9:00 AM to 3:00 PM.
After having a pretty good first day of the show, I was looking forward to a good second day and it did not disappoint. The second day of the show on Wednesday is the longest day of the show as the exhibit hours go from 9:00 AM until 6:00 PM (day one is 9:00 AM to 5:00 PM and day three is 9:00 AM to 3:00 PM).
The IMS2015 show is already off to a great start here in sunny Phoenix, Arizona and I hope that those of you attending are enjoying it so far.
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