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想用meas语句 测出noise
! v! Z" f& c( R8 t下面是我的sp文档2 O4 v4 W' n: M* r% w
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.options post scale=1u measout co=1328 V# ]( M9 u% u
.lib 'h05mixddst02v231.lib'tt% G f/ d- p" P2 r
.param k1=1.5/ T' o1 T1 l/ s4 p% ?
*stage-1
, g4 | K$ v# V) R' im5 2 1 vdd vdd mp l=1 w=4.8$ _8 J( l& W9 \. P3 a* G# t7 y
m1 3 vi- 2 2 mp l=1 w=46
) d7 j) t5 D9 wm2 4 vi+ 2 2 mp l=1 w=46. |: b" d) R+ Y& X5 M: g
m3 3 3 0 0 mn l=k1 w='10.7*k1'
1 T/ w3 x/ j8 S* i9 @$ Wm4 4 3 0 0 mn l=k1 w='10.7*k1'
3 C" {' @4 G8 a5 ]& }*stage-2
# k; g- [* _& V' N! d% x; @8 fm6 5 4 0 0 mn l=k1 w='121*k1'
; f7 y( y- [0 \, pm7 5 1 vdd vdd mp l=1 w=253 Q5 \' i4 z! T& Q! Q
cc 5 4 2p
4 \' U4 D; U$ [; R2 f. \( J0 Pcl 5 0 5p+ M5 B5 r( |. F5 @8 o: g: l# R) [
*source/ i: t. y4 D. q% O, t+ u
vdd vdd 0 dc 5
- G; Z3 ?8 L- Avb 1 0 dc 3.7% R" m0 `0 L) i& n8 N
v+ vi+ 0 dc 2 ac 1 sin 2 0.5 1k E, C ?% Y6 u# y- e3 N1 {
v- vi- 0 dc 2" \4 m+ Y/ b7 T! K- |
# L) O# i* Z' K" j6 r.op
: | v+ @4 s1 H% T% j+ d0 Q/ h% N.ac dec 10 1 100MEG sweep k1 1.0 2.0 0.16 P; Y! H( L; K6 A+ s) E* t
.noise v(5) v+ 102 m& c" y8 i6 |' |4 Q/ }) E3 c
.print noise onnoise innoise `0 G% f. B( U$ m& F- [8 s
.plot noise onnoise innoise
0 T$ @: ~9 \' Y! p9 m% D( _.plot vp(5) vdb(5) , g) Q. b5 ?# M7 b
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.meas ac vdbmax max vdb(5) $ w; Z/ K5 H( z8 L/ m! I% w( w) V: A
.meas ac v3db param='vdbmax-3'
' F# _" m4 S7 N8 K.meas ac f3db when vdb(5)=v3db7 ^( k& p0 ?1 E( f- D
.meas ac phsmagin find vp(5) when vdb(5)=04 K4 y' v2 P0 Q# g9 g8 d8 p
.meas ac phasemargine param='180+phsmagin'
8 y' \0 }! S. R2 i. U.meas ac noi3db integral innoise from=1 to=10002 u9 w3 M! `/ Y1 d) T1 U( _4 F# c
.meas ac opttt param='noi3db*k1'
/ [8 J4 g& d. ]9 p" ?.meas ac opttx param='noi3db*vdbmax'5 O& j* R, C# P% q
.end
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请教怎么用 measures语句测出电路从1-1000hz的等效input noise ....
( e1 P' I2 _, }# a: J0 l+ \, a) Z等待高手。。。 |
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