The Designer's Guide Community
Forum
ForumVerilog-AMSAnalysisModelingDesignTheory
Welcome, Guest. Please Login or Register. Please follow the Forum guidelines.
Jul 16th, 2024, 9:32pm
 
  HomeHelpSearchLoginRegisterPM to admin    
The Designer's Guide Community Forum › Design › RF Design › What is the need for having high precision ADC?
‹ Previous topic | Next topic ›
Pages: 1
Send Topic Print
What is the need for having high precision ADC? (Read 1427 times)
iVenky
Senior Member
****
Offline



Posts: 101
Silicon Valley
What is the need for having high precision ADC?
Mar 12th, 2013, 12:09am  
In the RF receive block after all the amplifying stages we have ADC. Usually I see that to be in the order of 14 bits (for example). This means that SNR is of about 85 dB. According to communication theory it is possible to obtain a good BER with an SNR of about 25 dB itself. Then why is it necessary to have a high precision ADC?
Back to top
 
 
View Profile   IP Logged
aaron_do
Senior Fellow
******
Offline



Posts: 1398
Re: What is the need for having high precision ADC?
Reply #1 - Mar 14th, 2013, 5:36pm  
Hi,


if any filtering is done after digitization, then you need to take into account the increased dynamic range due to interference. You need to be able to resolve below the noise level, and up to the highest interferrer level.


regards,
Aaron
Back to top
 
 
there is no energy in matter other than that received from the environment - Nikola Tesla
View Profile   IP Logged
Pages: 1
Send Topic Print
‹ Previous topic | Next topic ›
« Home ‹ Board
The Designer's Guide Community Forum » Powered by YaBB 2.2.2!
YaBB © 2000-2008. All Rights Reserved.
Copyright 2002-2024 Designer’s Guide Consulting, Inc. Designer’s Guide® is a registered trademark of Designer’s Guide Consulting, Inc. All rights reserved. Send comments or questions to editor@designers-guide.org. Consider submitting a paper or model.