用HSPICE跑analog simulation出現time step too small的錯誤

hyseresis

1.Be sure to check your model parameter units.
/ @7 D4 F4 o, l/ E0 D2.Use MOS ACM=1,ACM=2,or ACM=3 source and drain diode calaulation to automatically generate parasitics.
  O  o1 F! h: e" z# O3.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).
# N) l9 l" D) U, U- X8 N4 h7 d* w6 d- w4.Check your options .
0 K+ q# {: U- A( w. B7 O9 W: Y5.schmitt Triggers are unpredictable for DC sweep and sometimes for operating point for the same reasons Oscillators and Filp-Flops are use slow transient.