i heard that many people will simulate sigma delta adc(transistor level)in cadence.can i use mentor graphics or hspice. what is the difference with these tools.
The difference in these tools is naturally the precision. In fact some tools gives siluation results very close to those give by the implented design on silicon and these are, of course the best.
There is another intersting tool TSPICE (product of tanner research) than you can try to simulate you Delta sigma at transistor level.
Regards,
Master_PicEngineer
i heard that many people will simulate sigma delta adc(transistor level)in cadence.can i use mentor graphics or hspice. what is the difference with these tools.
Hi, I was wondering....to simulate DSADC in transistor level, is long transient + taking the power spectrum the only way to simulate the design? Because this can sometimes take weeks.....is there a faster way?
use the sd toolbox of the Simulink in matlab when you find the coefficient is you are in S domain use Gm-C ciruits and check your design with spectre, hspice, or mentor graphix
There is a parallel Spice simulator that can do long Sigma-Delta ADC transient simulation in 1 day: Gsim from Gemini Design Technology, Inc. (http://www.gemini-da.com)
This is our detailed benchmark data:
Circuit Size: 17477 bsim3v3's, 53632 capacitors, 600 resistors, ...
Circuit Type: Sigma Delta ADC
Matrix Size: 37336
Transient Simulation Stop Time: 63us
Total # of Simulation Time Steps: 1037144
Simulation Elapse Time (Wallclock Time) : 27+ hours