[問題] hspice問題
看板Electronics作者lonewolf1035 (現在綽號~~~國手...XD)時間16年前 (2007/10/10 23:14)推噓1(1推 0噓 11→)留言12則, 3人參與討論串1/3 (看更多)
我的hspice(pmos)程式如下:
vinp 0 vinp 0v
idp 4 0 45ua
Mp1 4 2 0 0 pch L=0.35u w=10u
E2 2 0 OPAMP 4 vinp
.dc vinp 0.1v 3.3v 0.1v
.print gainp=par('lx7(Mp1)/lx8(Mp1)')
另外附上nmos的程式給大家對照:
vinn vinn 0 0v
idn 0 3 200ua
Mn1 3 1 0 0 nch L=1.75u w=10u
E1 1 0 OPAMP 3 vinn
.dc vinn 0.1v 3.3v 0.1v
.print gainn=par('lx7(Mn1)/lx8(Mn1)')
這是老師要求跑intrinsic gain的電路
同樣的電路 以nmos來跑的話可以run
但換成pmos之後他一直顯示no convergence in dc sweep
請問有可能是哪裡出問題呢?? 謝謝大家的回答~~
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