The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Simulators >> Circuit Simulators >> SpectraVerilog sim: Glitch on AD/DA interface
https://designers-guide.org/forum/YaBB.pl?num=1189776036

Message started by neoflash on Sep 14^th, 2007, 6:20am

Title: SpectraVerilog sim: Glitch on AD/DA interface
Post by neoflash on Sep 14^th, 2007, 6:20am

Hi, folks:

I do have a trouble with simulation with Spectra_Verilog. The problem is that there is often a lot of glitches on the interface signals between analog and digital. If the signal is a clock, it will incur double trigger.

How to entirely solve this problem?

Regards

Title: Re: SpectraVerilog sim: Glitch on AD/DA interface
Post by sheldon on Sep 16^th, 2007, 9:29am

Neo_Flash,

It might be good to talk to your support AE.

Questions and comments:

1) Which version of Spectre are you using?
In more recent versions of Spectre should have better accuracy

2) What errpreset are you using?
If you are doing something that requires a lot of accuracy, for
example, simulation of an analog/digital feedback loop, then
tighter accuracy control may help. In the past, using the Spectre
transient option relref=pointlocal helped me for one tough circuit

3) Try AMS Designer if you have access to it

Best Regards,

Sheldon