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你好請問版主知道rail to rail input stage fold casecode op UNITY-GAIN BANDWIDTH 200MHz 是否可行 Vdd=2.5v 我使用Razavi *rail to rail input fold casecode 6 H& t2 Q% U+ i3 V' v; [1 g' e
vcc vdd! gnd! 2.5
* R; e4 {, d) Y/ C.option post" y2 ~8 q$ N# a# ^3 _' ^
.global vdd! gnd!. V: E( H# U# R% d+ T
****first stage
$ R8 l- e+ v) Omn1 2 vp 1 gnd! n l=0.7u w=10u m=70. g8 q# q7 A5 S5 q
mn2 3 vn 1 gnd! n l=0.7u w=10u m=703 W n' Z0 T5 s. Q# Q! X; A
mp1 5 vp 7 7 p l=0.7u w=10u m=80
' s6 v- o( `3 F* l4 zmp2 6 vn 7 7 p l=0.7u w=10u m=80
! M' }- R" Q ^1 B2 i+ n! |/ A# ]
3 Q g9 G8 E6 l( Sm4 2 vpb1 vdd! vdd! p l=1u w=15u m=10. Z. @6 U9 C, t2 p. F9 c
m5 3 vpb1 vdd! vdd! p l=1u w=15u m=103 ]# v" \$ s E8 v, r0 E7 o5 `
m6 4 vpb2 2 vdd! p l=1u w=10u m=2
; S% M+ k7 E* A/ pm7 vo vpb2 3 vdd! p l=1u w=10u m=2
4 V9 ~1 o3 x. t4 u6 W! Z" S! Rm8 4 vnb2 5 gnd! n l=1u w=10u m=4
\8 c) F" r% u. G( u0 R) Sm9 vo vnb2 6 gnd! n l=1u w=10u m=41 c8 G; Z- `0 G/ E) p5 G
m10 5 4 gnd! gnd! n l=1u w=7u m=10
. h2 ]6 R% I- p0 @" }, N1 j( vm11 6 4 gnd! gnd! n l=1u w=7u m=10
& j/ x! i) h) k; L5 j****bias 0 K7 K. }; q: Y4 e: I0 o
vnb2 vnb2 gnd! 1.3: F6 {+ e7 P+ ]
vpb1 vpb1 gnd! 1.6
# D8 W. Y1 g1 O4 _" avpb2 vpb2 gnd! 0.6
3 u' E4 x% |. u9 x4 Q- eIss1 1 gnd! 20u i$ `1 _4 u* X) K
Iss2 vdd! 7 20u
$ \. l c" R: S4 m, E! N% m9 s2 ~3 D, k" N1 V) s
****load
7 _" `7 W* `' m4 Bcl vo gnd! 1p7 [% O6 f) J, Q, m! C! e
; D5 y8 j$ v& y- G0 s% v4 }5 e- V.dc vp 0 2.5 1m) @( [; I. s. ~& d) y
vp vp vp1 sin(0 1m 1k) ac 1
! ^* D1 ?/ ?8 t( c& }. Yvp1 vp1 gnd! 2 ' D2 B( R. @. H3 s: d, x# s5 O3 M2 ?
vn vn gnd! 2 ! b `9 ~, e* n" }' I" d Q. T
.tran 1n 20u
2 n I c- Q; u3 d7 i7 C.ac dec 10 1 100g( x, c a% v" u Q; c; H
.pz v(vo) vp m) W# j0 f2 t% ?
.TF v(vo) vp
4 o3 o1 w4 C8 o" `; u; T: o! r2 F.print ac ga=par('vdb(vo)-vdb(vp)')
3 Q; v3 C1 y! N0 o7 G.print ac pa=par('vp(vo)')
1 c" d4 ?* ]2 o- |* {: E
) j5 v! y$ v: m.op
( n) p5 I u) a.lib ' xx035v.l' tt& P/ \ ?* L! w
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