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不好意思,大學修積體電路導論,目前的作業出到inverter chain 但卡在這好久,麻煩前輩們解惑了!問題是4階inverter chain,條件給了minimum size還有基本的cl 1pf等等,我用了網路建議的f=3.8試看看,第一關跑圖就失敗了。。。tr0跑出來的圖形歪七扭八整片顏色。。。下面是我的gedit inv.sp % z8 A0 \, @( O; H
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*****circuit****
- V1 H9 O' \) c8 m. C7 z, Y5 l.subckt sub1 in out vdd vss9 t1 _; {) a; I) z
Mp1 out in vdd vdd P_18 w=3u l=0.18u m=1
! `0 c8 k( H. m. h% N- @' U' rMn1 out in vss vss N_18 w=1u l=0.18u m=1
4 M; V/ x( ~" ~8 _! v! U.ends sub1& u7 H& f/ j1 N5 n! u) W+ V; K
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.subckt sub2 in out vdd vss v+ G4 N4 b+ d$ k. z I% F& Z
Mp2 out in vdd vdd P_18 w=11.4u l=0.18 m=26 T- ?$ r' P. O, V
Mn2 out in vss vss N_18 w=3.8u l=0.18u m=2* c3 \: ^+ M" j* _8 Q8 J5 ]
.ends sub2: f2 d; r+ t" R+ O3 F
+ s' d3 R1 Q- ^' S.subckt sub3 in out vdd vss
4 T9 Y- z! W0 V& ]. F" O) q! WMp3 out in vdd vdd P_18 w=43.32u l=0.18u m=3
F/ Y3 \) G7 C) O- RMn3 out in vss vss N_18 w=14.44u l=0.18u m=3+ G2 r; P. E# v: o. H' T
.ends sub3
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2 b( x, J% b9 w8 j.subckt sub4 in out vdd vss
6 |: @$ ^1 T! o2 r; QMp4 out in vdd vdd P_18 w=164.6u l=0.18u m=4$ k, H) @9 R% J0 f& S2 u8 O
Mn4 out in vss vss N_18 w=54.87u l=0.18u m=4# _! p; u1 \+ w8 Z
.ends sub4& Q7 P, j9 D, [6 H+ n
% B& q/ J7 G9 |" l. l2 _3 lxsub1 a b c 0 sub1
5 N- k0 ~3 j8 H5 q0 Hxsub2 b d e 0 sub27 O! P; y: C- I+ p
xsub3 d f g 0 sub3
+ g& m9 f; z3 e7 w6 B- jxsub4 f h i 0 sub4
: v' ?4 W7 N% f2 L# j& gcl h 0 1pf/ c1 a0 T8 ~" h4 }& Z6 o
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*****source******
, ~: n/ z) z N# ?6 S/ B* b& pvdd c 0 1.8, S( @, ~ d/ M# ?
vdd e 0 1.8
6 E7 `3 b8 V5 g E/ P! S' Lvdd g 0 1.8+ \; \3 f; `" u6 C# K% D: ]: x7 M0 P
vdd i 0 1.8
/ x# {8 m& N5 f! cvgnd vss 0 0' n A; o: z$ ]8 O% y0 i( l
vin a 0 pulse(0 1.8 1n 0.5n 0.5n 4.5n 10n)
3 h/ s0 [3 q6 i. }*vin a 0 0.9
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