[SI-LIST] Re: ADC measurement and characterization method?
- From: wolfgang.maichen@xxxxxxxxxxxx
- To: jean-pierre bouthemy <jean-pierre.bouthemy@xxxxxxxxxxxxxxxxxx>
- Date: Wed, 28 Oct 2009 08:37:06 -0700
Salut Jean-Pierre,
get yourself a copy of the classic
Marc Burns,, Gordon W Roberts
"An Introduction to Mixed-Signal IC Test and Measurement"
Oxford University Press, 2001
ISBN 0-19-514016-8
Another worthy read is
Matthew Mahoney
"DSP-Based Testing of Analog and Mixed-Signal Circuits"
IEEE Computer Society Press, 1987
ISBN 0-8186-0785-8
It's not the most recent publication but it contains a good introduction
into ADC testing.
That should be enough to get you going.
Wolfgang
"eoin.mcgibney" <eoin.mcgibney@xxxxxxxxxx>
Sent by: si-list-bounce@xxxxxxxxxxxxx
10/28/2009 02:58 AM
To
jean-pierre bouthemy <jean-pierre.bouthemy@xxxxxxxxxxxxxxxxxx>
cc
si-list@xxxxxxxxxxxxx
Subject
[SI-LIST] Re: ADC measurement and characterization method?
Jean-Pierre,
Capture the digital samples from the ADC and process them using a DFT
that should allow you to determine the dynamic performance. If you want
to characterise the ADC you may want to consider INL and DNL, depending
on the ADC's application these maybe more important.
There is plenty of information and app notes from ADC manufacturers out
on the net around this and some good books too.
Regards,
Eoin
jean-pierre bouthemy wrote:
>Hi SI experts,
>I have a question regarding Analog-to-Digital Converter (ADC) measurement
and characterization.
>I'm affraid this topic is a little bit more "RF-related" than SI, but I
hope you will be able to answer my questions...
>
>If I want to characterize an ADC, my feeling is that ENOB (Effective
Number Of Bits) measurement is the best way to evaluate its performance.
>I don't know if I can measure ENOB parameter, but I know that if I
measure SNR, THD and SINAD, I can calculate ENOB with the formula:
>
>ENOB = (SINAD - 1.76 dB) / 6.02
>
>Now, I have to know how to measure SNR, THD and SINAD on my ADC.
>I can not find papers on the web about that?
>
>What I don't know is how to connect the DIGITAL N-bits parallel output of
the ADC to the ANALOG 50 ohms input of the spectrum analyser??
>What should I put between ADC output and spectrum analyser input without
adding more noise?
>
>Furtermore, any advice on ADC SINAD measurement method would be much
appreciated.
>
>Your help is really welcome.
>
>
>Thank you.
>Jean-Pierre Bouthemy
>
>
>
>
>
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