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網絡上找到的
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* s; d4 [# b0 X* s& {8 Z2 t# V* lm386 subcircuit model follows:
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************************************original* IC pins: 2 3 7 1 8 5 6 46 Q# U# E7 ?* p4 A4 S. ~
* IC pins: 1 2 3 4 5 6 7 8
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.subckt lm386 g1 inn inp gnd out vs byp g8
( W1 L3 C3 {& Y6 T8 R5 C$ @************************************original*.subckt lm386 inn inp byp g1 g8 out vs gnd
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* input emitter-follower buffers:3 h j2 Z$ @( g$ a% _6 A4 e% n
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q1 gnd inn 10011 ddpnp
. I& D) t; A" e% R9 lr1 inn gnd 50k* C! _0 S9 C" n& N7 }
q2 gnd inp 10012 ddpnp
% H% U- P+ o5 Z' ur2 inp gnd 50k
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* differential input stage, gain-setting* T/ M0 y; ]+ b' P* \3 x
* resistors, and internal feedback resistor:
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q3 10013 10011 10008 ddpnp2 S. U1 f' ^- u& \ f
q4 10014 10012 g1 ddpnp
( X$ F, P- o! u0 x, E5 Er3 vs byp 15k/ ~) n5 @; z" k; d% N6 W) Z) u
r4 byp 10008 15k
S; a2 \; z9 |r5 10008 g8 150
9 v, d+ G2 n& |$ v' t8 C Tr6 g8 g1 1.35k) V: y3 T x5 e8 h
r7 g1 out 15k1 D& x5 J6 i6 g! C( t N- D
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* input stage current mirror:
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q5 10013 10013 gnd ddnpn
$ ~! J2 w) ^$ Q0 W( qq6 10014 10013 gnd ddnpn7 [; v( X# Z1 }1 ~+ u
- `9 v0 W* l* ~# {( ?2 h* voltage gain stage & rolloff cap:
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q7 10017 10014 gnd ddnpn
1 E' A2 C; l+ o8 o' {& dc1 10014 10017 15pf: ]/ }& W9 X R. C( W8 H
5 z4 i0 V1 c6 h* current mirror source for gain stage:7 }) g8 H# r. m1 D+ i
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i1 10002 vs dc 5m- `: Y, Z. _" `: G" ]
q8 10004 10002 vs ddpnp
5 g# @; l4 j# d: [ y8 Uq9 10002 10002 vs ddpnp
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* Sziklai-connected push-pull output stage:
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`5 I {$ m/ Q5 P, |3 C* Cq10 10018 10017 out ddpnp1 m& r2 M' a$ L0 `# e; A9 d
q11 10004 10004 10009 ddnpn 100. p+ {5 k% I( ]+ l8 D( O. y
q12 10009 10009 10017 ddnpn 100( L& r! }% L* M- \& s, h( |8 q* a
q13 vs 10004 out ddnpn 100& y2 y8 S. q$ S- {' k
q14 out 10018 gnd ddnpn 100( Q; [5 J4 T9 G. S7 [
6 [7 Y; |5 V: h" `- z. I6 O* generic transistor models generated5 f$ m- s! y2 }2 t
* with MicroSim's PARTs utility, using" w9 [) A3 i2 e; F2 T6 ]: I
* default parameters except Bf:& R) ` i- \1 ?; p% t
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.model ddnpn NPN(Is=10f Xti=3 Eg=1.11 Vaf=100$ ?% o' H4 P, ^( c3 f
+ Bf=400 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
1 B: m- i# r H. [/ `+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
7 F# K) C( w! h3 R4 R+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n, h3 t: p2 Y: K2 k+ E$ W
+ Tf=1n Itf=1 Xtf=0 Vtf=10)
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.model ddpnp PNP(Is=10f Xti=3 Eg=1.11 Vaf=1000 ~; |+ r" O1 K: T
+ Bf=200 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
; u& I7 d7 b( x- z1 l+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333' X1 T' q: ]2 o4 v
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n/ C3 m* c6 I5 w- t6 N+ L3 N
+ Tf=1n Itf=1 Xtf=0 Vtf=10)- e1 W& ~; L1 [+ Q
( ~2 f; Q3 i; x& h.ends
3 @) N" t. V* z1 m*----------end of subcircuit model----------- |
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