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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
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*****circuit****
% T2 W5 n3 C% s2 O.subckt sub1 in out vdd vss# B7 `: Q0 ]$ E7 A3 B
Mp1 out in vdd vdd P_18 w=3u l=0.18u m=1' {- m ^# M5 u
Mn1 out in vss vss N_18 w=1u l=0.18u m=16 c) I: Y" S7 F. u! [
.ends sub1
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.subckt sub2 in out vdd vss/ k; w c( A C- @2 F
Mp2 out in vdd vdd P_18 w=11.4u l=0.18 m=2! K! \1 _$ }) Q) l9 e; @! y. L, J
Mn2 out in vss vss N_18 w=3.8u l=0.18u m=28 i _, X3 Y, w4 U% @
.ends sub2& N- U: I! i) v2 |2 y; D
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.subckt sub3 in out vdd vss- b, G6 Y! [4 Z
Mp3 out in vdd vdd P_18 w=43.32u l=0.18u m=3
/ x3 W3 [# W# z1 q1 j; U3 N9 }8 W$ |Mn3 out in vss vss N_18 w=14.44u l=0.18u m=3) t7 ?( Z2 e9 A% W
.ends sub3
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1 b4 r6 n: Y, l8 m) z8 r.subckt sub4 in out vdd vss- R/ i# i6 H5 c- P
Mp4 out in vdd vdd P_18 w=164.6u l=0.18u m=4& M* J1 s' ^1 s
Mn4 out in vss vss N_18 w=54.87u l=0.18u m=4
9 A& t- a# a6 Q# J.ends sub4
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xsub1 a b c 0 sub1
+ T2 j3 Y( Q% _+ h2 ?& ~3 n/ B; hxsub2 b d e 0 sub2
* C M, a5 B! Q" P3 d3 E8 |xsub3 d f g 0 sub3- v R2 Q) C% B
xsub4 f h i 0 sub4
) x; X- u0 S: x: O+ c' _3 `; Zcl h 0 1pf
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0 o$ l. e5 g! C) [# a3 E- S% N*****source******
% J2 Q- ?4 O- _5 d- H% P' vvdd c 0 1.8& \4 E& K9 U# a7 P
vdd e 0 1.8
, @/ A# r" f2 o8 R* `+ {3 Xvdd g 0 1.8
* K/ \3 h. I. i% A4 Tvdd i 0 1.8
' a+ r0 {, }* _# u8 Zvgnd vss 0 00 x, E% ]1 `7 o) K1 k
vin a 0 pulse(0 1.8 1n 0.5n 0.5n 4.5n 10n)7 o% q' f) l0 r, }7 c( Z# \
*vin a 0 0.90 F7 f5 H; G/ J T0 r( u$ t9 n. s
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