* Z:\home\khalils\Downloads\files\data\raw_asc\537c22217642_flicker_noise_2N3904_BC850.asc
* Generated by LTspice 26.0.1 for Windows.
*http://www.elektrotechnik.hs-magdeburg.de/Mitarbeiter/daehn/lehre/elektronik_2/Ueb_7.pdf
*SPICE-Modell des Transistors:
* ...
* .tran 10u
* .ac dec 100 1 1e8
* .noise V(out1) V1 dec 100 1 1e7
* .noise V(out2) V1 dec 100 1 1e7
*http://www.elektrotechnik.hs-magdeburg.de/Mitarbeiter/daehn/lehre/elektronik_2/Ueb_7.pdf
*SPICE-Modell des Transistors:
* ...
* KF=0
* KF=10F
* KF=0
* Flicker Noise Test Circuit\nOutput: Plot V(inoise) to get the input referred noise voltage density.\nSource for the BC850 model: http://www.elektrotechnik.hs-magdeburg.de/Mitarbeiter/daehn/lehre/elektronik_2/Ueb_7.pdf
+ ISE=55.668F NE=2.567 NR=1.015 BR=7.745 VAR=14.000 IKR=1.000
+ ISC=1.084P NC=4.063
+ RB=9.000 IRB=0.100M RBM=4.500
+ RE=0.350 RC=1.445
+ CJE=13.050P VJE=0.690 MJE=0.375 FC=0.750
+ CJC=4.100P VJC=0.750 MJC=0.420 XCJC=0.650
+ TF=0.620N TR=2.5N PTF=1.000
+ XTF=68.000 VTF=1.000 ITF=0.720
+ XTB=1.400 EG=1.110 XTI=3.200
+ KF=10.000F AF=1.000)
+ ISE=55.668F NE=2.567 NR=1.015 BR=7.745 VAR=14.000 IKR=1.000
+ ISC=1.084P NC=4.063
+ RB=9.000 IRB=0.100M RBM=4.500
+ RE=0.350 RC=1.445
+ CJE=13.050P VJE=0.690 MJE=0.375 FC=0.750
+ CJC=4.100P VJC=0.750 MJC=0.420 XCJC=0.650
+ TF=0.620N TR=2.5N PTF=1.000
+ XTF=68.000 VTF=1.000 ITF=0.720
+ XTB=1.400 EG=1.110 XTI=3.200
+ KF=0.000F AF=1.000)
R6 in N003 {RSOURCE}
R1 9V out3 1k
R3 9V out2 1k
V2 9V 0 9
C3 N006 0 1
I3 N006 0 1m
Q3 out2 N002 N005 0 BC850_KF0
Q2 out3 N003 N006 0 BC850
I1 N004 0 1m
C2 N005 0 1
R2 in N001 {RSOURCE}
V1 in 0 PULSE(-.01 .01 0 10n 10n 490n 1u) AC 1
R4 9V out1 1k
R5 in N002 {RSOURCE}
C1 N004 0 1
Q1 out1 N001 N004 0 2N3904
I2 N005 0 1m
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.MODEL BC850 NPN (IS=45.000F NF=1.010 BF=516.544 VAF=74.000 IKF=0.708
.MODEL BC850_KF0 NPN (IS=45.000F NF=1.010 BF=516.544 VAF=74.000 IKF=0.708
.noise V(out3) V1 dec 100 1 1e7
.param RSOURCE=1
.step param RSOURCE 1 601 200
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1748 1212
WIRE -128 176 -128 112
WIRE -128 320 -128 256
WIRE -112 -144 -112 -176
WIRE -112 -32 -112 -64
WIRE 160 112 -128 112
WIRE 288 112 240 112
WIRE 352 -128 352 -176
WIRE 352 -16 352 -48
WIRE 352 64 352 -16
WIRE 352 192 352 160
WIRE 352 224 352 192
WIRE 352 336 352 304
WIRE 400 -16 352 -16
WIRE 464 192 352 192
WIRE 464 224 464 192
WIRE 464 336 464 288
WIRE 640 112 608 112
WIRE 752 112 720 112
WIRE 816 -128 816 -176
WIRE 816 -16 816 -48
WIRE 816 64 816 -16
WIRE 816 192 816 160
WIRE 816 224 816 192
WIRE 816 336 816 304
WIRE 864 -16 816 -16
WIRE 928 192 816 192
WIRE 928 224 928 192
WIRE 928 336 928 288
WIRE 1040 112 1008 112
WIRE 1152 112 1120 112
WIRE 1216 -128 1216 -176
WIRE 1216 -16 1216 -48
WIRE 1216 64 1216 -16
WIRE 1216 192 1216 160
WIRE 1216 224 1216 192
WIRE 1216 336 1216 304
WIRE 1264 -16 1216 -16
WIRE 1328 192 1216 192
WIRE 1328 224 1328 192
WIRE 1328 336 1328 288
IOPIN 864 -16 Out
IOPIN 400 -16 Out
IOPIN 1264 -16 Out
SYMBOL res 144 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value {RSOURCE}
SYMBOL npn 752 64 R0
SYMATTR InstName Q3
SYMATTR Value BC850_KF0
SYMBOL npn 1152 64 R0
SYMATTR InstName Q2
SYMATTR Value BC850
SYMBOL res 800 -144 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL cap 1312 224 R0
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL res 1024 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R6
SYMATTR Value {RSOURCE}
SYMBOL cap 912 224 R0
SYMATTR InstName C2
SYMATTR Value 1
SYMBOL cap 448 224 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL voltage -128 160 R0
WINDOW 3 14 116 Left 0
WINDOW 123 14 144 Left 0
WINDOW 39 24 132 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(-.01 .01 0 10n 10n 490n 1u)
SYMATTR Value2 AC 1
SYMBOL current 1216 224 R0
SYMATTR InstName I3
SYMATTR Value 1m
SYMBOL npn 288 64 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 336 -144 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res 624 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R5
SYMATTR Value {RSOURCE}
SYMBOL res 1200 -144 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL voltage -112 -160 R0
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL current 816 224 R0
SYMATTR InstName I2
SYMATTR Value 1m
SYMBOL current 352 224 R0
SYMATTR InstName I1
SYMATTR Value 1m
FLAG -128 320 0
FLAG -128 112 in
FLAG 608 112 in
FLAG 352 -176 9V
FLAG 816 -176 9V
FLAG -112 -176 9V
FLAG -112 -32 0
FLAG 864 -16 out2
FLAG 400 -16 out1
FLAG 816 336 0
FLAG 352 336 0
FLAG 928 336 0
FLAG 464 336 0
FLAG 1008 112 in
FLAG 1216 -176 9V
FLAG 1264 -16 out3
FLAG 1216 336 0
FLAG 1328 336 0
TEXT 432 432 Left 0 !*http://www.elektrotechnik.hs-magdeburg.de/Mitarbeiter/daehn/lehre/elektronik_2/Ueb_7.pdf\n*SPICE-Modell des Transistors:\n* ...\n.MODEL BC850 NPN (IS=45.000F NF=1.010 BF=516.544 VAF=74.000 IKF=0.708\n+ ISE=55.668F NE=2.567 NR=1.015 BR=7.745 VAR=14.000 IKR=1.000\n+ ISC=1.084P NC=4.063\n+ RB=9.000 IRB=0.100M RBM=4.500\n+ RE=0.350 RC=1.445\n+ CJE=13.050P VJE=0.690 MJE=0.375 FC=0.750\n+ CJC=4.100P VJC=0.750 MJC=0.420 XCJC=0.650\n+ TF=0.620N TR=2.5N PTF=1.000\n+ XTF=68.000 VTF=1.000 ITF=0.720\n+ XTB=1.400 EG=1.110 XTI=3.200\n+ KF=10.000F AF=1.000)
TEXT -584 -104 Left 0 ;.tran 10u
TEXT -584 -136 Left 0 ;.ac dec 100 1 1e8
TEXT -584 -272 Left 0 ;.noise V(out1) V1 dec 100 1 1e7
TEXT -584 -240 Left 0 ;.noise V(out2) V1 dec 100 1 1e7
TEXT -592 432 Left 0 !*http://www.elektrotechnik.hs-magdeburg.de/Mitarbeiter/daehn/lehre/elektronik_2/Ueb_7.pdf\n*SPICE-Modell des Transistors:\n* ...\n.MODEL BC850_KF0 NPN (IS=45.000F NF=1.010 BF=516.544 VAF=74.000 IKF=0.708\n+ ISE=55.668F NE=2.567 NR=1.015 BR=7.745 VAR=14.000 IKR=1.000\n+ ISC=1.084P NC=4.063\n+ RB=9.000 IRB=0.100M RBM=4.500\n+ RE=0.350 RC=1.445\n+ CJE=13.050P VJE=0.690 MJE=0.375 FC=0.750\n+ CJC=4.100P VJC=0.750 MJC=0.420 XCJC=0.650\n+ TF=0.620N TR=2.5N PTF=1.000\n+ XTF=68.000 VTF=1.000 ITF=0.720\n+ XTB=1.400 EG=1.110 XTI=3.200\n+ KF=0.000F AF=1.000)
TEXT 856 -184 Left 0 ;KF=0
TEXT -584 -208 Left 0 !.noise V(out3) V1 dec 100 1 1e7
TEXT 1256 -184 Left 0 ;KF=10F
TEXT 400 -176 Left 0 ;KF=0
TEXT -128 -336 Left 0 ;Flicker Noise Test Circuit\nOutput: Plot V(inoise) to get the input referred noise voltage density.\nSource for the BC850 model: http://www.elektrotechnik.hs-magdeburg.de/Mitarbeiter/daehn/lehre/elektronik_2/Ueb_7.pdf
TEXT -584 -352 Left 0 !.param RSOURCE=1
TEXT -584 -320 Left 0 !.step param RSOURCE 1 601 200