Version 4
SHEET 1 1524 772
WIRE -96 224 -144 224
WIRE 160 224 -96 224
WIRE 320 224 240 224
WIRE 496 224 320 224
WIRE 576 224 496 224
WIRE 720 224 656 224
WIRE 864 224 720 224
WIRE -144 256 -144 224
WIRE 320 256 320 224
WIRE 496 256 496 224
WIRE 720 256 720 224
WIRE -144 368 -144 336
WIRE 320 368 320 336
WIRE 496 368 496 320
WIRE 720 368 720 320
FLAG 496 368 0
FLAG 720 368 0
FLAG -144 368 0
FLAG -96 224 in
FLAG 864 224 out
FLAG 320 368 0
SYMBOL res 144 240 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL cap 480 256 R0
SYMATTR InstName C1
SYMATTR Value 3.3µ
SYMBOL res 560 240 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL cap 704 256 R0
SYMATTR InstName C2
SYMATTR Value 3.3µ
SYMBOL voltage -144 240 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 3 176 Left 2
SYMATTR Value2 AC 1
SYMATTR Value PULSE(0 10 0 1n 1n 0.5 1)
SYMATTR InstName V1
SYMBOL res 304 240 R0
SYMATTR InstName R11
SYMATTR Value 10k
TEXT -144 64 Left 2 !.tran 0 1 0 0.1m
TEXT -144 16 Left 2 ;.ac dec 100 0.01 100
TEXT -144 96 Left 2 !.options plotwinsize=0
TEXT 216 16 Left 2 ;F(s) = K/(1+s*(R1*(C1+C2)+R2*C2)+s*s*R1*R2*C1*C2)\nK=R10/(R10+R11)\nR1=R10*R11/(R10+R11)
TEXT -160 504 Left 2 !.MEAS TRAN tr10 find time when V(out)=0.5 rise=1\n.MEAS TRAN tr90 find time when V(out)=4.5 rise=1\n.MEAS TRAN tr param tr90-tr10
TEXT -152 592 Left 2 ;View -> SPICE Error Log\ntr10: time=0.0133827 at 0.0133827\ntr90: time=0.140319 at 0.140319\ntr: tr90-tr10=0.126936
TEXT 448 504 Left 2 !.options meascplxfmt=polar\n.MEAS v0 FIND V(out) AT 0.01\n.MEAS AC fg FIND freq WHEN mag(V(out))=v0/sqrt(2)
TEXT 456 592 Left 2 ;View -> SPICE Eroor Log\nfg: freq=(2.74761,0°) at 2.74761