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List some probably if nonconvergence...
1.Be sure to check your model parameter units.* B( E. u- S \ k
2.Use MOS ACM=1,ACM=2,or ACM=3 source and drain diode calaulation to automatically generate parasitics.( H$ x& l: S0 d' h$ |( ~4 L5 w
3.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).; E6 U) u# u X9 N6 H; e
4.Check your options .. [" M- \4 n: y9 L
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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