|
請問各位大大% w0 z2 ?5 j/ g; f+ @ N( b
如何下HSPICE的語法,得知OP的-3db頻寬???& W" b) P% T6 [: H
我知道OP的gain,uint_gain跟phase與法如下:- N& Q8 L8 g1 T, u* n7 |1 M
! P4 c- H3 |! S6 w% I p# Y
.meas ac uint_gain when vdb(out)=0
. y2 N2 s3 f. t3 x/ T: o.meas ac phase_p find vp(out) when vdb(out)=02 D/ t& E, [) M' }7 L9 N
.meas ac gain max vdb(out)
v8 s! M7 \1 V2 A( X3 j
( C, q" R( B2 b M但是-3db頻寬的語法要如何下ㄋ?
% ?- @0 L6 O) i9 \; l我用) G8 T0 b0 I. s1 B1 P, Z) c
.meas ac -3db_bw when vdb(out1)='gain-3'
- K/ w5 ]& o: u1 E3 q. e& z& p.meas ac -3db_bw when param='gain-3'; S6 k* h6 S9 e) [* ?
都不對3 f) u C* L4 u. w3 U, F
' B* x+ n' u6 Q1 b6 ~* E請各位大大敎教我吧!!感激不盡 |
|