Can the LVS SPICE netlist provided be used in a circuit-level simulation? A: No, for several reasons.
• PLL simulations are very tricky to run. It is fairly straightforward to get results that show the PLL works either much better or much worse than it will in a real application. Part of the value that we offer is that we have the expertise to properly simulate these PLLs and that we have done a thorough job at it. • In order to establish adequate performance margin to ensure correct operation under all circumstances, many thousands of simulations must be run under carefully established operating conditions, which requires keen insight into what can go wrong and how to excite possible failures. • We do not want customers relying on the simulated performance of our PLLs outside the specified operating ranges or instead of the specified performance numbers. The specified performance is carefully margined based not only on our carefully obtained simulation results, but also on our insight into PLL designs.
