jbdavid
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In my experience, it hard to beat the simplicitiy of using AMS-Designer from Cadence.. for each simulation you have a choice between Spectre and Ultrasim solvers for the transistor level part of this, This is REALLY nice, as the SAME TESTBENCH can be used for the High level HDL sim, and one that puts LARGE blocks of circuits into ultra-sim.. I've also used the Accelerated MOS evaluation of the spectre solver and gotten significant speed ups that way. The spectre solver (in AMSD) also has (had?) a PMR option that allowed for the Multirate partitioning to be done, but I didn't have time to play much with that over the last couple of years..
When you couple the Ease of use, with the ease of licensing, (with an MMSIM license you get 6 tokens each equivalent to 1 spectre.. you need checkout only 1 for spectre, 2 for spectreRF, 3 (I think) for AMSD, 6, for Ultrasim, and 9 for AMS-Ultra ) so you can run spectre sims in parallel or AMS-Ultra sims with the same tokens.. Seems a lot more cost effective, at least for my designs, than buying spectre and another vendor's fast spice simulator.. Of course you need to be satisfied it will do the job you need it to.. Thats what an evaluation license is for.. Jonathan
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