* Z:\tmp\asc_mix_bvbm4pog\mix_224.asc
* Generated by LTspice 26.0.1 for Windows.
XU1 3 2 4 11 1 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU2 5 6 4 11 7 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU3 10 9 4 11 8 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU4 12 13 4 11 14 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
Vi N003 0 AC {1-z*z}
R3 0 N002 100k
Rs N003 N004 1n
C1 N002 N004 10p
B8 N002 N004 I=I(V5)
rm1 N004 N005 .05k
V5 N005 N006 0
V10 N001 0 0
rm2 N001 N002 .025k
B3 o N002 I=I(V10)
C2 N002 o .5p
R1 N008 0 1k
R2 o N008 9k
Iz N003 N006 AC {0.5*z*(z-1)}
Viy N006 N007 0
Vz N007 N008 AC {0.5*z*(z+1)}
Ey y 0 N003 N008 1
.ac dec 100 100 100G
.param z=0
.step param z list 1 0 -1
* Library below included based on ModelFile attribute of instance XU1, XU2, XU3, XU4 (C:\users\khalils\AppData\Local\LTspice\lib\sym\OpAmps\UniversalOpAmp2.asy)
.lib UniversalOpAmp2.lib
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1664 1472
WIRE 96 0 -16 0
WIRE 96 32 96 0
WIRE 96 32 48 32
WIRE 96 48 96 32
WIRE 64 64 -16 64
WIRE 192 80 128 80
WIRE 64 96 -16 96
WIRE 96 112 0 112
WIRE 48 128 48 32
WIRE 96 128 48 128
WIRE 96 144 96 128
WIRE 64 160 -16 160
WIRE 192 176 128 176
WIRE 64 192 -16 192
WIRE 0 208 0 112
WIRE 96 208 0 208
WIRE 48 224 48 128
WIRE 96 224 48 224
WIRE 96 240 96 224
WIRE 64 256 -16 256
WIRE 192 272 128 272
WIRE 64 288 -16 288
WIRE 0 304 0 208
WIRE 96 304 0 304
WIRE 48 320 48 224
WIRE 96 320 48 320
WIRE 96 336 96 320
WIRE 64 352 -16 352
WIRE 192 368 128 368
WIRE 64 384 -16 384
WIRE 0 416 0 304
WIRE 96 416 96 400
WIRE 96 416 0 416
WIRE 0 464 0 416
WIRE 864 -96 672 -96
WIRE 1040 -96 864 -96
WIRE 1264 -96 1120 -96
WIRE 672 -80 672 -96
WIRE 1264 -80 1264 -96
WIRE 864 -48 864 -96
WIRE 672 32 672 0
WIRE 1136 32 672 32
WIRE 1264 32 1264 0
WIRE 1264 32 1136 32
WIRE 1136 64 1136 32
WIRE 1264 64 1264 32
WIRE 672 128 672 32
WIRE 848 128 672 128
WIRE 848 160 848 128
WIRE 672 176 672 128
WIRE 1136 176 1136 128
WIRE 1264 176 1264 144
WIRE 1264 176 1136 176
WIRE 544 288 496 288
WIRE 672 288 672 240
WIRE 672 288 624 288
WIRE 848 288 848 240
WIRE 848 288 672 288
WIRE 848 320 848 288
WIRE 848 464 848 400
WIRE 1264 528 1264 176
WIRE 496 608 496 288
WIRE 640 608 496 608
WIRE 848 608 848 544
WIRE 848 608 720 608
WIRE 848 672 848 608
WIRE 1264 736 1264 528
WIRE 848 816 848 752
WIRE 592 944 560 944
WIRE 624 944 592 944
WIRE 736 944 704 944
WIRE 736 960 736 944
WIRE 496 992 496 608
WIRE 640 992 496 992
WIRE 848 992 848 896
WIRE 848 992 688 992
WIRE 496 1056 496 992
WIRE 848 1056 848 992
WIRE 1264 1056 1264 816
WIRE 1264 1056 848 1056
WIRE 1264 1088 1264 1056
WIRE 496 1216 496 1136
WIRE 1264 1216 1264 1168
IOPIN 192 80 Out
IOPIN 192 176 Out
IOPIN 192 272 Out
IOPIN 192 368 Out
IOPIN -16 96 In
IOPIN -16 64 In
IOPIN -16 160 In
IOPIN -16 192 In
IOPIN -16 256 In
IOPIN -16 288 In
IOPIN -16 352 In
IOPIN -16 384 In
IOPIN -16 0 In
IOPIN 0 464 In
SYMBOL Opamps\\UniversalOpamp2 96 80 R0
SYMATTR InstName U1
SYMBOL Opamps\\UniversalOpamp2 96 176 R0
SYMATTR InstName U2
SYMBOL Opamps\\UniversalOpamp2 96 272 R0
SYMATTR InstName U3
SYMBOL Opamps\\UniversalOpamp2 96 368 R0
SYMATTR InstName U4
SYMBOL voltage 496 1040 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC {1-z*z}
SYMATTR InstName Vi
SYMATTR Value ""
SYMBOL res 656 -96 R0
SYMATTR InstName R3
SYMATTR Value 100k
SYMBOL res 528 304 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName Rs
SYMATTR Value 1n
SYMBOL cap 656 176 R0
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL bi 848 160 R0
SYMATTR InstName B8
SYMATTR Value I=I(V5)
SYMBOL res 832 304 R0
SYMATTR InstName rm1
SYMATTR Value .05k
SYMBOL voltage 848 448 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 44 Left 0
SYMATTR InstName V5
SYMATTR Value 0
SYMBOL voltage 1136 -96 R90
WINDOW 0 46 -5 VRight 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 74 -5 VRight 0
SYMATTR InstName V10
SYMATTR Value 0
SYMBOL res 1248 -96 R0
SYMATTR InstName rm2
SYMATTR Value .025k
SYMBOL bi 1264 144 M180
WINDOW 0 24 88 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName B3
SYMATTR Value I=I(V10)
SYMBOL cap 1120 64 R0
SYMATTR InstName C2
SYMATTR Value .5p
SYMBOL res 1248 1072 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 1248 720 R0
SYMATTR InstName R2
SYMATTR Value 9k
SYMBOL current 640 608 R270
WINDOW 0 32 40 VTop 0
WINDOW 3 -32 40 VBottom 0
WINDOW 123 -60 40 VBottom 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Iz
SYMATTR Value ""
SYMATTR Value2 AC {0.5*z*(z-1)}
SYMBOL voltage 848 656 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 24 44 Left 0
SYMATTR InstName Viy
SYMATTR Value 0
SYMBOL voltage 848 800 M0
WINDOW 123 24 -12 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC {0.5*z*(z+1)}
SYMATTR InstName Vz
SYMATTR Value ""
SYMBOL e 608 944 R270
SYMATTR InstName Ey
SYMATTR Value 1
FLAG 192 80 1
FLAG 192 176 7
FLAG 192 272 8
FLAG 192 368 14
FLAG -16 96 3
FLAG -16 64 2
FLAG -16 160 6
FLAG -16 192 5
FLAG -16 256 9
FLAG -16 288 10
FLAG -16 352 13
FLAG -16 384 12
FLAG -16 0 4
FLAG 0 464 11
FLAG 496 1216 0
FLAG 864 -48 0
FLAG 1264 1216 0
FLAG 736 960 0
FLAG 592 944 y
FLAG 1264 528 o
TEXT -736 592 Left 0 !.ac dec 100 100 100G
TEXT -736 512 Left 0 !.param z=0
TEXT -736 552 Left 0 !.step param z list 1 0 -1