audio-synth/dev/analog/ETOTH-Amp_LM386/Project Outputs for ETOTH-Amp_LM386/ETOTH-Amp_LM386.nsx

ETOTH-Amp_LM386
*SPICE Netlist generated by Advanced Sim server on 18.11.2025 21:38:20
.options MixedSimGenerated

*Schematic Netlist:
CC1 NetC1_1 NetC1_2 50nF
CC_VCM1 NetC_VCM1_1 GND 47uF
CC_VCM2 VAP NetC_VCM1_1 47uF
CCblock NetC1_2 NetCblock_2 2000uF
CCblock1 NetCblock1_1 NetCblock1_2 2000uF
XIC1C NetIC1_10 NetC_VCM1_1 VAP GND NetIC1_8 TL074
XIC2 NetIC2_1 GND NetCblock1_2 GND NetC1_2 VAP NetIC2_7 NetIC2_8 LM386
RR1 NetC1_1 GND 10R
RR_POTA 0 NetCblock1_1 {10k * {POS}}
RR_POTB NetCblock1_1 NetR_POT_3 {10k - (10k * {POS})}
RR_rs1 NetIC1_10 VAP 470k
RR_rs2 GND NetIC1_10 470k
RR_Speaker GND NetCblock_2 8R
QT_rsN GND NetIC1_8 NetC_VCM1_1 2N2907
QT_rsP VAP NetIC1_8 NetC_VCM1_1 2N2222
VU_q VAP GND 10V
VU_VCM_CURRENT 0 NetC_VCM1_1 0
VUin NetR_POT_3 0 DC 0 SIN(0 2 440Hz 0 0 0) AC 1 0

.PLOT TRAN {v(R_Speaker)} =PLOT(1) =AXIS(1) =NAME(U_speaker) =UNITS(V) =RGB(0, 255, 0)
.PLOT TRAN {i(R_Speaker)} =PLOT(2) =AXIS(1) =NAME(I_speaker) =UNITS(A)
.PLOT TRAN {p(R_Speaker)} =PLOT(3) =AXIS(1) =NAME(P_speaker) =UNITS(W)
.PLOT TRAN {i(U_VCM_CURRENT)} =PLOT(4) =AXIS(1) =NAME(I_VCM) =UNITS(A)
.PLOT TRAN {v(VAP)} =PLOT(1) =AXIS(1) =RGB(255, 0, 0)
.PLOT TRAN {v(GND)} =PLOT(1) =AXIS(1) =RGB(0, 0, 255)
.PLOT TRAN {i(Cblock1)} =PLOT(5) =AXIS(1) =NAME(I_C_in) =UNITS(A)
.PLOT TRAN {v(Cblock1)} =PLOT(5) =AXIS(2) =NAME(U_C_in) =UNITS(V)
.PLOT TRAN {i(Cblock1)} =PLOT(5) =AXIS(1) =NAME(I_C_out) =UNITS(A)
.PLOT TRAN {v(Cblock1)} =PLOT(5) =AXIS(2) =NAME(U_C_out) =UNITS(V)

.OPTIONS METHOD=GEAR MAXORD=2
*Selected Circuit Analyses:
.TRAN 45.45u 22.73m 0 45.45u
.CONTROL
.ENDC

*Global Parameters:
.PARAM POS={0.06}

*Models and Subcircuits:
*TL074
*Quad LoNoise JFETInput OpAmp pkg:DIP14
*+ (A:3,2,4,11,1)(B:5,6,4,11,7)(C:10,9,4,11,8)(D:12,13,4,11,14)
* Connections:
*             Non-Inverting Input
*             | Inverting Input
*             | | Positive Power Supply
*             | | | Negative Power Supply
*             | | | | Output
*             | | | | |
.SUBCKT TL074 1 2 3 4 5
C1   11 12 3.498E-12
C2    6  7 15E-12
DC    5 53 DX
DE   54  5 DX
DLP  90 91 DX
DLN  92 90 DX
DP    4  3 DX
BGND 99  0 V=V(3)*.5 + V(4)*.5
BB    7 99 I=I(VB)*4.715E6 - I(VC)*5E6 + I(VE)*5E6 +
+              I(VLP)*5E6 - I(VLN)*5E6
GA    6  0 11 12 282.8E-6
GCM   0  6 10 99 8.942E-9
ISS   3 10 DC 195E-6
HLIM 90  0 VLIM 1K
J1   11  2 10 JX
J2   12  1 10 JX
R2    6  9 100E3
RD1   4 11 3.536E3
RD2   4 12 3.536E3
RO1   8  5 150
RO2   7 99 150
RP    3  4 2.143E3
RSS  10 99 1.026E6
VB    9  0 DC 0
VC    3 53 DC 2.2
VE   54  4 DC 2.2
VLIM  7  8 DC 0
VLP  91  0 DC 25
VLN   0 92 DC 25
.MODEL DX D(IS=800E-18)
.MODEL JX PJF(IS=15E-12 BETA=270.1E-6 VTO=-1)
.ENDS TL074

*TopSPICE library: Models\MISCSEMI.MDB
*PART NUMBER: LM386
*MODEL NAME:  LM386
*SYMBOL:      X8PIN
*
*LM386 Audio power amplifier
* /*
* 1.  The following model behavior shows good agreement with the
* LM386 data sheet values:
*
*   a) Quiescent power supply current;
*   b) High frequency response at low gain setting;
*   c) Power-supply rejection ratio, both bypassed and unbypassed;
*   d) Voltage gain, both with pins 1&8 shorted and open; and
*   e) Total harmonic distortion.
* 
* 2.  The model has the following discrepancies:
* 
*   f) High-gain frequency response looks somewhat more wideband
*      than the actual device;
*   g) Peak-to-peak output voltage swing is a bit more than the
*      data sheet value- in other words, the model drives
*      closer to the rails; and
*   h) Input bias current in this model is only about 7 nA,
*      compared with the 250 nA "typical" value mentioned in
*      the data sheet.
* 
* 3.  The frequency response characteristics of this LM386 model
* can be adjusted somewhat by changing C1, the rolloff capacitor in
* the voltage gain stage.  It could also be made more realistic by
* tweaking transistor model parameters Cjc, Cje, Tr and Tf,
* although this can get pretty hairy.
* 
* 4.  Likewise, output drive capability could be made more
* realistic by tweaking transistor model parameters; again, this is
* hairy.
*/
*
.subckt lm386 g1 inn inp gnd out  vs byp  g8
*             |   |   |   |   |   |   |   |
* IC pins:    1   2   3   4   5   6   7   8
* input emitter-follower buffers:
q1 gnd inn 10011 ddpnp
r1 inn gnd 50k
q2 gnd inp 10012 ddpnp
r2 inp gnd 50k
* differential input stage, gain-setting
* resistors, and internal feedback resistor:
q3 10013 10011 10008 ddpnp
q4 10014 10012 g1 ddpnp
r3 vs byp 15k
r4 byp 10008 15k
r5 10008 g8 150
r6 g8 g1 1.35k
r7 g1 out 15k
* input stage current mirror:
q5 10013 10013 gnd ddnpn
q6 10014 10013 gnd ddnpn
* voltage gain stage & rolloff cap:
q7 10017 10014 gnd ddnpn
c1 10014 10017 15pf
* current mirror source for gain stage:
i1 10002 vs dc 5m
q8 10004 10002 vs ddpnp
q9 10002 10002 vs ddpnp
* Sziklai-connected push-pull output stage:
q10 10018 10017 out ddpnp
q11 10004 10004 10009 ddnpn 100
q12 10009 10009 10017 ddnpn 100
q13 vs 10004 out ddnpn 100
q14 out 10018 gnd ddnpn 100
* generic transistor models generated
* with MicroSim's PARTs utility, using
* default parameters except Bf:
.model ddnpn NPN(Is=10f Xti=3 Eg=1.11 Vaf=100
+ Bf=400 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n
+ Tf=1n Itf=1 Xtf=0 Vtf=10)
.model ddpnp PNP(Is=10f Xti=3 Eg=1.11 Vaf=100
+ Bf=200 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n
+ Tf=1n Itf=1 Xtf=0 Vtf=10)
.ends LM386

*2N2907 MCE 5-27-97
*Ref: Motorola Small-Signal Device databook, Q4/94
*Si 400mW 40V 600mA 250MHz GenPurp pkg:TO-18 3,2,1
.MODEL 2N2907 PNP (IS=60.9F NF=1 BF=260 VAF=114 IKF=0.36 ISE=30.2P NE=2
+ BR=4 NR=1 VAR=20 IKR=0.54 RE=85.8M RB=0.343 RC=34.3M XTB=1.5
+ CJE=27.6P VJE=1.1 MJE=0.5 CJC=15.3P VJC=0.3 MJC=0.3 TF=636P TR=442N)

*2N2222 MCE 5-20-97
*Ref: Motorola Small-Signal Device Databook, Q4/94
*Si 400mW 30V 800mA 300MHz GenPurp pkg:TO-18 3,2,1
.MODEL 2N2222 NPN (IS=81.2F NF=1 BF=195 VAF=98.6 IKF=0.48 ISE=53.7P NE=2
+ BR=4 NR=1 VAR=20 IKR=0.72 RE=64.4M RB=0.258 RC=25.8M XTB=1.5
+ CJE=89.5P VJE=1.1 MJE=0.5 CJC=28.9P VJC=0.3 MJC=0.3 TF=530P TR=368N)

.END