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List some probably if nonconvergence...
1.Be sure to check your model parameter units.0 v7 ~! B% K8 O9 M+ u; l |# Q
2.Use MOS ACM=1,ACM=2,or ACM=3 source and drain diode calaulation to automatically generate parasitics.
8 S' ?8 W2 C" D+ T9 P$ j3.Check if you MOS models had subshreshold parameter set? (NFS=1e11 for HSPICE Level 1, 2, 3 and N0=1 for HSPICE BSIM 1, 2, 3 models & Level 28).
, s5 g! {$ K! Y% }- f/ Y2 g7 V4.Check your options .. \9 M. y& W4 F$ r+ d
5.schmitt Triggers are unpredictable for DC sweep and sometimes for operating point for the same reasons Oscillators and Filp-Flops are use slow transient. |
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