MadSci Network: Engineering

Re: How do analogue to digital converters work?

Date: Mon Feb 19 13:01:55 2001
Posted By: Karl Kolbus, Staff, Data processing, Mequon Consulting Corp.
Area of science: Engineering
ID: 980087008.Eg

Hello Neil!

Ah, yes - ADC's. A subject near and dear to my heart. As you may well 
know, analog to digital (and vice versa) signal processing is very common 
in present-day electronics, but not very easily understood. The upside is 
that our good friends at Texas Instruments have a website that is loaded 
with all kinds of information. Their home page is

Rather than trying in my own feeble way to explain the process to you, 
I've found some links that will help. The first discusses data convertors 
in general using the Successive Approximation Register technique. Very 
good. The second takes you to their knowledge base for Application 
Journals. The February 2001 issue contains a much more detailed 
explaination of the SAR charge redistrubition process but, unfortunately, 
you'll have to come back to it at a later time because the Feb. 2001 issue 
hasn't been placed on the web yet (I get hard copies mailed to me).

I hope this helps.
If you need further info, contact me directly at:

Your not-so-mad scientist,


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