Designer’s Guide Community

harpoon Senior Member Offline Posts: 112 Hampshire	DEM for Delta Sigma ADC (3rd order SC based) Jul 27^th, 2011, 4:26am Hi all, I will be working on a Dynamic Element Matching (DEM) scheme for a SC based 3rd order Delta Sigma ADC. Can someone give me some "real-world" pointers ? what are the pitfalls, pros and cons, reference papers, etc ... btw, I am reading "Understanding Delta-Sigma Data Converters" by R. Schreier & G. Temes Thanks.
Back to top	IP Logged

jefkat Community Member Offline Posts: 69	Re: DEM for Delta Sigma ADC (3rd order SC based) Reply #1 - Sep 20^th, 2011, 1:10am Have you found some links yet?
Back to top	IP Logged

harpoon

Senior Member

Offline

Posts: 112
Hampshire

Re: DEM for Delta Sigma ADC (3rd order SC based)
Reply #2 - Sep 20^th, 2011, 2:05am

There are a lot of published work, each with their own merits. However, I am really after some real world feedback, i.e. what are the pitfalls.

There are several schemes that I have tested in Matlab, but they don't seem to work that well. My ex-colleague has put together several schemes but failed to get them to work.

You seem to have something new and interesting ?

Back to top

IP Logged

ywguo Community Fellow Offline Posts: 943 Shanghai, PRC	Re: DEM for Delta Sigma ADC (3rd order SC based) Reply #3 - Sep 20^th, 2011, 7:27am I recommend CMOS Integrated Analog-to-Digital and Digital-to-Analog Converters by Rudy J. van de Plassche. http://www.designers-guide.org/Books/#vanDePlassche-2003
Back to top	IP Logged

harpoon Senior Member Offline Posts: 112 Hampshire	Re: DEM for Delta Sigma ADC (3rd order SC based) Reply #4 - Sep 21^st, 2011, 2:30am Thanks ... that book was published in 2003 ... Are there any new stuff published since then ?
Back to top	IP Logged

jefkat Community Member Offline Posts: 69	Re: DEM for Delta Sigma ADC (3rd order SC based) Reply #5 - Sep 21^st, 2011, 11:18am how many levels do you have in quantizer/DAC?
Back to top	IP Logged

harpoon Senior Member Offline Posts: 112 Hampshire	Re: DEM for Delta Sigma ADC (3rd order SC based) Reply #6 - Sep 22^nd, 2011, 2:19am we have a 9 level quantizer (3bit quantizer/dac).
Back to top	IP Logged

jefkat Community Member Offline Posts: 69	Re: DEM for Delta Sigma ADC (3rd order SC based) Reply #7 - Sep 23^rd, 2011, 12:51am Could you please explain what problem are you facing ? DEM for 9 levels works fine. What order of error shaping are you trying to achieve?
Back to top	IP Logged