Modeling 5th order CTSD in VerilogA

[RamyRady_RF]

Hello,

I am trying to model a 5th order CT Sigma delta modulator in VerilogA, Are there any simple way to implement the transfer function that just derived from simulink as a verilogA model?
I mean H(S) directly as a verilogA model?

 

[pancho_hideboo]

Use laplace_nd().
**broken link removed**

 

[RamyRady_RF]

I am Modeling the 5th order CT SD with feedforward architecture, I couldn't find a similar model in cadence libararies so I implemented my model. However I am not sure how accurate it is

I used Sum, loopfilter laplace_nd() of the transfer function I got from matlab and then ADC and DAC.

 

[pancho_hideboo]

I couldn't find a similar model in cadence libararies

It is very natural.

However I am not sure how accurate it is

Can you understand Delta Sigma ADC surely ?

Evaluate NTF and SQNR.
https://www.edaboard.com/showthread.php?380004