Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

reconfigurable multi mode sigma delta modulator

Status
Not open for further replies.
P

pankaj jha

Full Member level 3
Joined
Apr 16, 2010
Messages
170
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,298
Location
jaipur
Activity points
2,457
hello everyone,
can anyone tell what does "2-2-2" stand for in "2-2-2 modified cascaded sigma delta modulator"
or "2-2" in "2-2 modified cascaded sigma delta modulator"
 

The 2 stands for 2nd order, so it means cascading 2nd order SD blocks.
 

well the 2 -2 -2 means a mash structure with 3 ( there are three 2's) second order loop( each 2) filter in series. Look into mash sigma delta converters. As for the modified it should mean like a mixed feedforward- feedback structure( only possible with 3rd order or more) or an all feedforward structure. I would say a standard structure is an all feedback structure. Another example a 2-1-2 structure means 2nd order then 1st order then 2nd order in series.
Hope this helps
Jgk
 

jgk2004 said:
well the 2 -2 -2 means a mash structure with 3 ( there are three 2's) second order loop( each 2) filter in series. Look into mash sigma delta converters. As for the modified it should mean like a mixed feedforward- feedback structure( only possible with 3rd order or more) or an all feedforward structure. I would say a standard structure is an all feedback structure. Another example a 2-1-2 structure means 2nd order then 1st order then 2nd order in series.
Hope this helps
Jgk
Click to expand...




thanks for ur help... great knowledge..
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top