Apr 25, 2005 #1 hmsheng Full Member level 4 Joined Dec 17, 2003 Messages 219 Helped 26 Reputation 52 Reaction score 10 Trophy points 1,298 Location China Activity points 1,556 Does anyone use UltraSim for PLL simulation? DC convergence problem occurs when I use UltraSim to run a PLL simulation. DC simulation can converge with Spectre simulator but can't with UltraSim. How to solve this problem?
Does anyone use UltraSim for PLL simulation? DC convergence problem occurs when I use UltraSim to run a PLL simulation. DC simulation can converge with Spectre simulator but can't with UltraSim. How to solve this problem?
Apr 29, 2005 #2 F flyinspace Full Member level 2 Joined Jul 1, 2003 Messages 123 Helped 1 Reputation 2 Reaction score 2 Trophy points 1,298 Activity points 1,160 Hi, Do you use any verilogA block in your PLL circuit? If your circuit is pure active elements or res|cap, maybe the structure has a problem. Added after 1 minutes: By the way, what is the version of your Ultrasim? The new version is more stable.
Hi, Do you use any verilogA block in your PLL circuit? If your circuit is pure active elements or res|cap, maybe the structure has a problem. Added after 1 minutes: By the way, what is the version of your Ultrasim? The new version is more stable.
Apr 29, 2005 #3 hmsheng Full Member level 4 Joined Dec 17, 2003 Messages 219 Helped 26 Reputation 52 Reaction score 10 Trophy points 1,298 Location China Activity points 1,556 The version of UltraSim I used is 6.0.1.73 Is there new version available now?