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想用meas语句 测出noise 3 E& r: M9 }' K9 V6 F7 `' [) P
下面是我的sp文档( P$ [1 ]; t4 f: L9 `6 J
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.options post scale=1u measout co=132
4 L, `) E: I9 A+ q0 J.lib 'h05mixddst02v231.lib'tt& t- u6 r1 o" i6 o u
.param k1=1.5
+ s/ D" ]3 `" A2 u; O- g" O*stage-1, m6 X5 u/ c/ H4 _
m5 2 1 vdd vdd mp l=1 w=4.82 u' c T7 B+ N9 p, n, {3 X
m1 3 vi- 2 2 mp l=1 w=46' l1 t) f2 r8 p% w ^
m2 4 vi+ 2 2 mp l=1 w=46
/ @; J' V# s, Vm3 3 3 0 0 mn l=k1 w='10.7*k1'
" k. e* U# `3 `* P& m Fm4 4 3 0 0 mn l=k1 w='10.7*k1') a" R# Y# ]1 [ k/ J. s; G
*stage-2) p% ]( w4 u& p3 {' n/ v+ I" Z
m6 5 4 0 0 mn l=k1 w='121*k1'3 r/ v3 L3 F* ?( f& M
m7 5 1 vdd vdd mp l=1 w=25& K& k# R" Z- j. u
cc 5 4 2p
! ~" z+ j" X8 ~cl 5 0 5p
) \5 R$ |$ |- k& X*source
/ ?4 ~5 e2 a# R: t' H1 bvdd vdd 0 dc 5
* p/ l8 O; h( Hvb 1 0 dc 3.7
, y: P, }3 o" H( [% a6 ov+ vi+ 0 dc 2 ac 1 sin 2 0.5 1k4 k; V+ k7 B4 D, [0 i: }
v- vi- 0 dc 2* w( D2 N8 v9 |0 b5 _
0 R. H1 @4 `0 _% a$ m( g$ L, E+ ^.op
0 m9 r% z- w+ t2 M0 i0 f. V+ _* j.ac dec 10 1 100MEG sweep k1 1.0 2.0 0.13 V+ ~! b9 F- R( H+ R0 w. j
.noise v(5) v+ 10
6 `! e- i9 \2 b0 M" x" X.print noise onnoise innoise
; M y& U" A, n+ `* G. Q, G Z.plot noise onnoise innoise3 D: E/ G" z) z. _% Y( T
.plot vp(5) vdb(5) " t5 H$ l, e! `: {; ]
# Q, ]0 a D6 F) i
.meas ac vdbmax max vdb(5) , H+ |+ W% ?3 q5 H8 C6 F$ B
.meas ac v3db param='vdbmax-3'$ h$ O5 Y& K/ R# r t
.meas ac f3db when vdb(5)=v3db
1 p& d6 B, j8 O* Q/ Q+ C+ V.meas ac phsmagin find vp(5) when vdb(5)=0, b8 l8 F0 m* @6 ^: j: Y
.meas ac phasemargine param='180+phsmagin'2 A9 m0 q* K6 f4 z, X" l
.meas ac noi3db integral innoise from=1 to=10007 r8 w6 d' I+ T
.meas ac opttt param='noi3db*k1'
! u" u, |9 c( Q( z1 C.meas ac opttx param='noi3db*vdbmax'6 X! v O/ O$ Z7 L5 z
.end3 Q0 o+ E, t0 g! |* k
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请教怎么用 measures语句测出电路从1-1000hz的等效input noise ....
2 v$ f1 t% A: }$ B" y5 l' T等待高手。。。 |
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