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網絡上找到的
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* lm386 subcircuit model follows:0 X r6 R0 J% v0 H
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************************************original* IC pins: 2 3 7 1 8 5 6 4
2 c8 t7 B3 |. S- s* IC pins: 1 2 3 4 5 6 7 8- m3 O( `) L# z0 E
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, o" g; c% r- P.subckt lm386 g1 inn inp gnd out vs byp g83 c* ]8 @; [: t, O7 X
************************************original*.subckt lm386 inn inp byp g1 g8 out vs gnd
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* input emitter-follower buffers:( \2 [9 O" a B. q% B
' J+ d5 f* @& r, Yq1 gnd inn 10011 ddpnp: X" O/ [/ l- q9 y" ?
r1 inn gnd 50k
1 Y: m$ ~0 i9 y3 I! n7 U) m- B1 K- Oq2 gnd inp 10012 ddpnp# N! w, X u+ z/ \
r2 inp gnd 50k+ L+ D4 b, t& N
" D! Z' y9 H( c# P# {0 W) N7 o& T. Q* differential input stage, gain-setting
& Q/ D/ y5 d# t u5 E* resistors, and internal feedback resistor:
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" d4 o$ X% q; a: U* qq3 10013 10011 10008 ddpnp
2 e4 u, r" a- v" L- V* Iq4 10014 10012 g1 ddpnp6 i: x$ S- {/ d# V8 k3 |+ G
r3 vs byp 15k# l/ k' {+ L; _" w/ q" B1 v9 B! R! g
r4 byp 10008 15k
: k' \8 Q3 v6 g' s3 e: b# dr5 10008 g8 150
) m2 W: I; p* D$ F0 c5 K& yr6 g8 g1 1.35k
5 R* h& W9 k9 {6 J6 ]r7 g1 out 15k
6 T* `( T. `1 T# v( c# S
( }, @9 W( b+ t4 X2 v' ~* input stage current mirror:
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q5 10013 10013 gnd ddnpn& j! q H! O' v/ N% O9 [% h+ W
q6 10014 10013 gnd ddnpn
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* voltage gain stage & rolloff cap:
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) s4 Q$ R; W2 @: W' dq7 10017 10014 gnd ddnpn
- F3 E7 J6 E9 r Qc1 10014 10017 15pf
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* current mirror source for gain stage:
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" x7 m: u5 v0 Q! T7 \! pi1 10002 vs dc 5m# g' F# o0 n& c% j
q8 10004 10002 vs ddpnp# {8 h+ {+ N }+ k& L; F3 ^
q9 10002 10002 vs ddpnp* Z! N+ N2 D+ g& ^- }: X" f
/ C! Q* ]- S* c" V8 o0 q- ~: X* Sziklai-connected push-pull output stage:
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q10 10018 10017 out ddpnp
# o% Y0 ?6 ]# U) {0 r1 w5 Aq11 10004 10004 10009 ddnpn 100
4 ?! Q5 R* @0 C4 u; _q12 10009 10009 10017 ddnpn 1007 {4 E- Z0 C! r9 X+ B1 E6 m
q13 vs 10004 out ddnpn 100
" S6 H" d+ m m7 j! L# aq14 out 10018 gnd ddnpn 100
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: ~- V5 Z; b* D& E) T2 c* generic transistor models generated7 B; b7 v+ i* @* m- O
* with MicroSim's PARTs utility, using
& D9 ~8 |( O6 z! k* default parameters except Bf:7 G$ D$ v3 Y9 z M
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.model ddnpn NPN(Is=10f Xti=3 Eg=1.11 Vaf=100
' U# |7 b- T& q' p+ Bf=400 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
5 L9 Y7 U0 `7 A) W, \8 x$ {5 r+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.33339 V+ O$ u5 }7 x; x
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n+ ^/ @- d) L; [2 d \* F
+ Tf=1n Itf=1 Xtf=0 Vtf=10)( ]5 o! L9 T/ z. m+ w' a
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.model ddpnp PNP(Is=10f Xti=3 Eg=1.11 Vaf=100+ h. k% {7 b/ z& J, _ m
+ Bf=200 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100/ H3 p+ H! s8 ]/ ^. R9 Z/ y
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333$ u; N p5 \4 K* A7 p' T, O
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n
" U1 y" o B& o7 C+ Q5 G+ Tf=1n Itf=1 Xtf=0 Vtf=10)
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*----------end of subcircuit model----------- |
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