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網絡上找到的
8 w; s) U9 ?: T
: A( B; u# z8 J: B4 L* lm386 subcircuit model follows:2 R& z3 O1 A8 a
~9 w5 k! p6 @% I! o( \; ?************************************original* IC pins: 2 3 7 1 8 5 6 4
. ]: o, K# A2 I8 K) N& P* IC pins: 1 2 3 4 5 6 7 8
- h0 |% V4 f; X1 V* | | | | | | | |) \( B% p0 O4 Z+ B0 S
.subckt lm386 g1 inn inp gnd out vs byp g8
' ?- D" w5 u+ D! h$ K8 b. s************************************original*.subckt lm386 inn inp byp g1 g8 out vs gnd( V% ?. ?' |% p2 Y' H/ J5 t
- m6 C& X. m: J; t
* input emitter-follower buffers:
" i3 S5 {. [. ~! x3 f; D# R& x
/ C3 p# n+ ~5 fq1 gnd inn 10011 ddpnp; |$ B& D5 B# |+ M) S4 `- P$ D4 ]. Y
r1 inn gnd 50k3 e7 a$ d+ B5 L. g, H
q2 gnd inp 10012 ddpnp! l& l+ @0 ]- W
r2 inp gnd 50k
4 k0 h+ \3 _( U. q/ h i* ^; z) w5 K3 e
* differential input stage, gain-setting5 @' z" r+ b5 O1 K! e
* resistors, and internal feedback resistor:5 f3 z7 q/ |; q
( S }6 v6 }) F1 x7 { s+ pq3 10013 10011 10008 ddpnp" |2 G: c/ F) M S; D
q4 10014 10012 g1 ddpnp6 H# w1 a- T1 e. o2 F- R
r3 vs byp 15k' |0 `& c/ q' E2 J- W/ b
r4 byp 10008 15k
8 G3 ]. b1 ]% {- m* ?1 Lr5 10008 g8 1500 k, g9 A, Q C+ C2 P
r6 g8 g1 1.35k% n2 I; u. T' m0 Z. `. M1 c- ?
r7 g1 out 15k
& P' \4 S4 c2 p) d9 `1 G7 O1 v" A; N 0 R1 W2 u* X, @2 f
* input stage current mirror:1 t0 O. t# w( O
# L$ R) v: A. mq5 10013 10013 gnd ddnpn! w+ U+ Q! [; B" U$ m
q6 10014 10013 gnd ddnpn
3 V2 N, o8 z0 a7 N/ R( c 2 f n+ `4 h3 U7 K9 a, C
* voltage gain stage & rolloff cap:0 r/ K6 l+ L. [9 W8 ^
7 A+ j: E: D0 hq7 10017 10014 gnd ddnpn2 N* D8 `8 G$ B
c1 10014 10017 15pf
! {0 v. D0 @" c [$ l
+ A q8 g6 R* G( M1 H* current mirror source for gain stage:
' j( B6 t8 X, O3 z" ?$ v5 } P - \: [0 i" z4 e* w
i1 10002 vs dc 5m% { i, c) c; x7 { c8 O/ p% q- S* |
q8 10004 10002 vs ddpnp
~8 C! V A: jq9 10002 10002 vs ddpnp
. L: I2 n+ J3 H- d 5 I$ j) v9 S$ C- e" P! P
* Sziklai-connected push-pull output stage:
7 O9 l' M- M+ Q% V
( Q# W8 h5 b! {" Pq10 10018 10017 out ddpnp7 _' l E; ?& e$ O
q11 10004 10004 10009 ddnpn 100. _! @+ o& |# ?* H; E+ }
q12 10009 10009 10017 ddnpn 100
6 O& j6 g$ O3 | b( eq13 vs 10004 out ddnpn 1004 ?; B7 [7 p' b
q14 out 10018 gnd ddnpn 100' t% K* M5 l# T# [) @
% ^+ X0 t5 p( H8 h1 |! t2 u# A* generic transistor models generated5 X$ `6 H9 Z8 q8 Y A( A/ V
* with MicroSim's PARTs utility, using
& k& \$ @7 s# G6 h* default parameters except Bf:3 W" \' d; J5 N7 D
, V3 O5 z; q- |- `) b.model ddnpn NPN(Is=10f Xti=3 Eg=1.11 Vaf=100
# A Q7 _; t9 @% U5 [+ Bf=400 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100 K8 x# Q" q% ^0 V
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333$ K9 z# P6 Y8 P% I
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n0 c8 M) B2 }) [( ?4 `( ~% m3 C- B
+ Tf=1n Itf=1 Xtf=0 Vtf=10)
" y* f, S8 K% u, O9 O) z" t
& j! M0 P' i$ ~+ E! m5 c.model ddpnp PNP(Is=10f Xti=3 Eg=1.11 Vaf=100, U0 t/ a9 p/ F4 H% T) m& j8 y
+ Bf=200 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=1000 O( N( y9 O2 x. U; v; c
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.33339 C6 }' O2 w7 n0 l2 B
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n
' s! y/ b- r7 B+ Tf=1n Itf=1 Xtf=0 Vtf=10)
: z0 o6 Y. \- z M0 O6 n/ r
& v( f1 z) O) U5 \- G.ends
' v+ `: n; ^! m0 Z*----------end of subcircuit model----------- |
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发表于 2012-5-29 17:24
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楼主
发表于 2012-6-29 15:56
