* Z:\home\khalils\Downloads\files\data\raw_asc\10d4e2b90174_Micro_power_crystal_osc1.asc
* Generated by LTspice 26.0.1 for Windows.
Q1 c b e 0 2N3904
R3 e 0 470K
R1 vcc c 2.2Meg
R2 c b 22e6
C2 b 0 10p
CY1 c b {C1} Rser={Rs} Lser={L1} Cpar={C0}
V1 vcc 0 3
C1 c 0 10p
C3 e 0 1f
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.param L1=4448
.param C1=.0053p
.param RS=11200
.param C0=1.84p
.tran 0 2.5 0 2u
* FS=1/(2*pi*sqrt(L1*C1)) = 20MHz\n \nFP-FS=C1/C0/2\n \nRS=2*pi*FS*L1/Q\n \ndf = Fs*C1/(CL+C0)/2 \n \nY1 is the quartz crystal\nmoeled with the capacitor \nmodel of LTspice.\nC0 is Cpar of Y1\nC1 is C of Y1\nL1 is Lser of Y1\nRS is Rser of Y1
.ic V(b)=0 V(c)=0
* http://www.engin.umich.edu/labs/EAST/@home/Project/Time%20Keeping/Crystal.pdf
* http://www.discovercircuits.com/DJ-Circuits/ultralowpwrxtlosc1.htm
* CL1
* CL1
* CL=CL1*CL2/(CL1+CL2)
* 1n
* http://members.spsdialup.com/mts@spsdialup.com/spice/xtal/clapp.htm
.options plotwinsize=0
* Y
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1092 680
WIRE 240 -144 192 -144
WIRE 336 -144 240 -144
WIRE 192 -112 192 -144
WIRE 336 -112 336 -144
WIRE -48 0 -128 0
WIRE 48 0 -48 0
WIRE 96 0 48 0
WIRE 192 0 192 -32
WIRE 192 0 96 0
WIRE 224 0 192 0
WIRE 336 0 336 -32
WIRE -128 16 -128 0
WIRE 48 32 48 0
WIRE -48 48 -48 0
WIRE 192 96 192 0
WIRE -128 112 -128 80
WIRE -48 144 -48 112
WIRE 48 144 48 112
WIRE 48 144 -48 144
WIRE 96 144 48 144
WIRE 128 144 96 144
WIRE -48 176 -48 144
WIRE 192 208 192 192
WIRE 224 208 192 208
WIRE 304 208 224 208
WIRE 192 224 192 208
WIRE 304 240 304 208
WIRE -48 256 -48 240
WIRE 192 336 192 304
WIRE 304 336 304 304
FLAG -48 256 0
FLAG 192 336 0
FLAG 336 0 0
FLAG 96 144 b
FLAG -128 112 0
FLAG 96 0 c
FLAG 304 336 0
FLAG 224 0 c
IOPIN 224 0 Out
FLAG 224 208 e
FLAG 240 -144 vcc
SYMBOL npn 128 96 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 176 208 R0
SYMATTR InstName R3
SYMATTR Value 470K
SYMBOL res 176 -128 R0
SYMATTR InstName R1
SYMATTR Value 2.2MEG
SYMBOL res 32 16 R0
SYMATTR InstName R2
SYMATTR Value 22e6
SYMBOL cap -64 176 R0
SYMATTR InstName C2
SYMATTR Value 10p
SYMBOL Misc\\xtal -64 48 R0
SYMATTR InstName Y1
SYMATTR Value {C1}
SYMATTR SpiceLine Rser={Rs} Lser={L1} Cpar={C0}
SYMBOL voltage 336 -128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 3
SYMBOL cap -144 16 R0
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL cap 288 240 R0
SYMATTR InstName C3
SYMATTR Value 1f
TEXT 400 56 Left 0 !.param L1=4448\n.param C1=.0053p\n.param RS=11200\n.param C0=1.84p
TEXT -128 -136 Left 0 !.tran 0 2.5 0 2u
TEXT 688 -64 Left 0 ;FS=1/(2*pi*sqrt(L1*C1)) = 20MHz\n \nFP-FS=C1/C0/2\n \nRS=2*pi*FS*L1/Q\n \ndf = Fs*C1/(CL+C0)/2 \n  \nY1 is the quartz crystal\nmoeled with the capacitor \nmodel of LTspice.\nC0 is Cpar of Y1\nC1 is C of Y1\nL1 is Lser of Y1\nRS is Rser of Y1
TEXT -128 -72 Left 0 !.ic V(b)=0 V(c)=0
TEXT -104 -192 Left 0 ;http://www.engin.umich.edu/labs/EAST/@home/Project/Time%20Keeping/Crystal.pdf
TEXT -104 -224 Left 0 ;http://www.discovercircuits.com/DJ-Circuits/ultralowpwrxtlosc1.htm
TEXT 496 -80 Left 0 ;CL1
TEXT 624 -80 Left 0 ;CL1
TEXT 688 -104 Left 0 ;CL=CL1*CL2/(CL1+CL2)
TEXT 360 304 Left 0 ;1n
TEXT -104 -256 Left 0 ;http://members.spsdialup.com/mts@spsdialup.com/spice/xtal/clapp.htm
TEXT -128 -112 Left 0 !.options plotwinsize=0
TEXT 520 -160 Left 0 ;Y
LINE Normal 496 -112 496 -144
LINE Normal 560 -144 560 -144
LINE Normal 560 -112 560 -144
LINE Normal 464 -128 496 -128
LINE Normal 464 -96 464 -128
LINE Normal 448 -96 464 -96
LINE Normal 480 -96 448 -96
LINE Normal 592 -128 560 -128
LINE Normal 592 -96 592 -128
LINE Normal 608 -96 592 -96
LINE Normal 576 -96 608 -96
LINE Normal 448 -80 480 -80
LINE Normal 592 -80 592 -48
LINE Normal 608 -80 592 -80
LINE Normal 576 -80 608 -80
LINE Normal 464 -80 464 -48
LINE Normal 448 -128 464 -128
LINE Normal 592 -128 608 -128
LINE Normal 480 -48 448 -48
LINE Normal 608 -48 576 -48
RECTANGLE Normal 544 -112 512 -144