Choice of the sigma-delta architecture

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Hi,all:
In sigma-delta designs,the architecture of the circuit is important,and there is lots of architectures to chose.
but,How I choice the best one? Try one by one?
And,when I choice the architecture, how I get the coefficient?
For example,in the picture below,How I get the coefficient by a quick method?

Thank you!

Use normal font size like everyone else, don't use capitals or big fonts. [alexan_e]

 

[The Setlaz]

To choose the architecture, it's all about trade-off. There is no "best" architecture.
OSR - filter order - number of bit for the quantizer - continous time vs switched-cap... Each architecture has advantanges and drawbacks. It depends what you expect from you design : high accuracy ? high-speed ? low-power ?

 

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To choose the architecture, it's all about trade-off. There is no "best" architecture.
OSR - filter order - number of bit for the quantizer - continous time vs switched-cap... Each architecture has advantanges and drawbacks. It depends what you expect from you design : high accuracy ? high-speed ? low-power ?

Thank you for you reply,setlaz!
you mention the quantizer,I don't know what the nlev(the level of quantize) mean,can you explain it to me?
and how I get the coefficient quickly? I know the sigma-delta toolbox,but its only have some fixed architecture.
can you recommond some books to me? I have delta-sigma data converters only.

 

[The Setlaz]

For the books, the most useful I found are :

Σ∆ A/D CONVERSION FOR SIGNAL CONDITIONING (Kathleen Philips & Arthur H. M. van Roermund)
Principles of Data Conversion System Design (Behzad Razavi)
Delta-Sigma Data Converters - Theory, Design and Simulation (Steven R. Norsworthy - Richard Schreier - Gabor C. Temes)

You will find all the informations you need in there and even more. (you can find them easily on Google)

For the coefficients, I don't know, but for 2nd and more filter order, you also have different topologies with feedback structures, feedforward structures and feedback+feedforward structures...

Good luck !

 

[lines]

For the books, the most useful I found are :

Σ∆ A/D CONVERSION FOR SIGNAL CONDITIONING (Kathleen Philips & Arthur H. M. van Roermund)
Principles of Data Conversion System Design (Behzad Razavi)
Delta-Sigma Data Converters - Theory, Design and Simulation (Steven R. Norsworthy - Richard Schreier - Gabor C. Temes)

You will find all the informations you need in there and even more. (you can find them easily on Google)

For the coefficients, I don't know, but for 2nd and more filter order, you also have different topologies with feedback structures, feedforward structures and feedback+feedforward structures...

Good luck !

Thank you very much.