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網絡上找到的3 H( g% F' g6 g+ n7 ^! V+ v% |
: V* O, P" `$ B2 l" j* @
* lm386 subcircuit model follows:
$ |7 F' v1 |3 |
1 K! X( [9 U% z) p7 b) b************************************original* IC pins: 2 3 7 1 8 5 6 4/ {0 g; E0 \$ D/ [7 i0 C2 U
* IC pins: 1 2 3 4 5 6 7 8
5 h, @( {" j3 |* ^# F* | | | | | | | |
0 ^; i$ p& H9 c, f2 f- W3 ^" i.subckt lm386 g1 inn inp gnd out vs byp g8. A+ k# o3 h& O1 L! n
************************************original*.subckt lm386 inn inp byp g1 g8 out vs gnd
w7 C+ }$ h1 @9 \ ; D+ B) A9 n! N, N1 x' ~& ~1 ?( X
* input emitter-follower buffers:
, t5 i% {8 T7 }! b9 w 8 c7 K" i ^7 K0 K8 U$ b, L0 y
q1 gnd inn 10011 ddpnp+ _# V8 ?3 V6 z8 A, D: L! I$ ?
r1 inn gnd 50k
, Z3 s& q4 K \( Qq2 gnd inp 10012 ddpnp
+ q3 Q$ ~9 r, a! Lr2 inp gnd 50k f6 I+ G8 _7 X. }/ ^' I) c
# R3 D9 J; E( M( z( a1 E
* differential input stage, gain-setting
' b: p( d/ x9 W; f8 }3 R, O3 t* resistors, and internal feedback resistor:7 D! F& l8 T( \, W7 p p. _
2 W' v5 p& a/ [+ |
q3 10013 10011 10008 ddpnp. [* f1 D1 i+ U0 L* V
q4 10014 10012 g1 ddpnp6 d5 h3 t( W* l. _+ A6 e: @( \& S
r3 vs byp 15k. Q, K$ h' [/ I: H" k; B
r4 byp 10008 15k5 O2 K( u" h( c* s* F4 Q
r5 10008 g8 1507 T7 p# p! n- g
r6 g8 g1 1.35k' h3 T0 Q2 e+ K% [! o4 s
r7 g1 out 15k& L( F% f4 b4 Q) V( R+ a2 W
5 k5 Q6 T1 G9 E2 F
* input stage current mirror:+ p) B3 E i# e( t; Z
2 p; O' I( P' s2 D; s3 I7 Eq5 10013 10013 gnd ddnpn' t3 D; G0 @& i8 ~. I
q6 10014 10013 gnd ddnpn
8 D' R% e7 P6 m& x; `1 S
! k4 s+ \" t- H" h; K3 a* voltage gain stage & rolloff cap:
9 T8 Z Q/ p: O
/ B: t( H# @3 n/ D, qq7 10017 10014 gnd ddnpn
9 p. u! n2 k# L# l8 y k2 x, Uc1 10014 10017 15pf: C2 B+ l2 Y/ F( J
) T3 Q I9 {7 E) |( C* current mirror source for gain stage:
, f6 N+ ]; U& H6 G6 D, v8 a . U( m; k) B0 p- w
i1 10002 vs dc 5m
+ w, ~0 W3 w# vq8 10004 10002 vs ddpnp
# i* {/ i4 w1 ?0 a3 Lq9 10002 10002 vs ddpnp
9 P2 \7 M* m+ O! ~) `
6 x% D5 M6 C, \* [1 ?; n* Sziklai-connected push-pull output stage:# y$ J0 [( x7 J; a: k( C# U
; n6 s: ]. G) @' L) wq10 10018 10017 out ddpnp) C& _" U+ f1 b
q11 10004 10004 10009 ddnpn 100% y6 E# R8 j9 }
q12 10009 10009 10017 ddnpn 100( [) L/ e/ d1 }" W& |! M6 y
q13 vs 10004 out ddnpn 100+ s, g8 z3 @& S) K2 r: a
q14 out 10018 gnd ddnpn 100/ O* N0 w* K4 r% x; \, P. t6 N
7 `" e0 E1 R" ?' ]/ \$ k* generic transistor models generated
) N% l. |0 }* z* T, Q4 |* with MicroSim's PARTs utility, using
2 J+ U: W+ c- Z4 b& M* default parameters except Bf:+ V9 n3 e0 P* D2 s
0 S! P% [6 u# ~1 F! K0 a3 E. l.model ddnpn NPN(Is=10f Xti=3 Eg=1.11 Vaf=100, O9 b" j4 i8 A: ~( }7 l
+ Bf=400 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=1009 w' a" `% b' U' ?' S. d" [, L
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
- Z* ~9 \2 z0 u+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n; M$ B2 O7 u+ d8 b* K1 t
+ Tf=1n Itf=1 Xtf=0 Vtf=10), Z; i0 ]' U0 b+ W# i9 j
4 x4 @: j8 R, ]& L6 Q* j/ Q4 Q.model ddpnp PNP(Is=10f Xti=3 Eg=1.11 Vaf=100
! H7 w" `5 I+ J% Y3 i: v+ Bf=200 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100* q8 r6 N) ^( [
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
b7 ~9 ?- r$ `+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n" F# E1 z X1 r: K8 B" U
+ Tf=1n Itf=1 Xtf=0 Vtf=10)* Z3 O K, y6 b* @! m
9 j. Z5 R7 t- H- x
.ends
- R" g* ?! L3 P3 U" P( `# r3 q*----------end of subcircuit model----------- |
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/1 
发表于 2012-5-29 17:24
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楼主
发表于 2012-6-29 15:56
