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請問各位大大0 ]" F& Z' B1 D
如何下HSPICE的語法,得知OP的-3db頻寬???
# Y+ n5 s- p3 o% l+ I% u; ^我知道OP的gain,uint_gain跟phase與法如下:
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.meas ac uint_gain when vdb(out)=0
, t0 w5 O O! i/ g# Z0 J6 d4 l* V) ]% n.meas ac phase_p find vp(out) when vdb(out)=0. h& V$ h* i! K$ H5 G* I7 e
.meas ac gain max vdb(out)
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$ |9 ?% m4 A* K5 u7 `2 H但是-3db頻寬的語法要如何下ㄋ?
0 K/ R! R7 g7 g我用
. R7 A j# S! b4 X) z.meas ac -3db_bw when vdb(out1)='gain-3'
, B3 ]# B' y: d/ y.meas ac -3db_bw when param='gain-3'
: m+ V& d. \" ~/ a都不對4 h4 S4 c. B2 `9 Z1 _. z1 B% r4 r
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請各位大大敎教我吧!!感激不盡 |
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