Version 4
SHEET 1 1252 680
WIRE 464 -384 160 -384
WIRE 736 -384 464 -384
WIRE 400 -336 256 -336
WIRE 736 -304 736 -384
WIRE -208 -256 -320 -256
WIRE -80 -256 -144 -256
WIRE 64 -256 -80 -256
WIRE -80 -240 -80 -256
WIRE 256 -240 256 -336
WIRE 160 -224 160 -384
WIRE 224 -224 160 -224
WIRE -320 -208 -320 -256
WIRE 464 -208 464 -384
WIRE 464 -208 288 -208
WIRE 560 -208 464 -208
WIRE 672 -208 624 -208
WIRE 64 -192 64 -256
WIRE 224 -192 64 -192
WIRE 736 -192 736 -224
WIRE 816 -192 736 -192
WIRE 960 -192 896 -192
WIRE -80 -144 -80 -160
WIRE 736 -144 736 -192
WIRE 736 -144 624 -144
WIRE 256 -112 256 -176
WIRE 288 -112 256 -112
WIRE 400 -112 400 -336
WIRE 720 -112 400 -112
WIRE 736 -112 736 -144
WIRE 816 -112 736 -112
WIRE 960 -112 960 -192
WIRE 960 -112 880 -112
WIRE -320 -96 -320 -128
WIRE 288 -80 288 -112
WIRE 496 -80 288 -80
WIRE 720 -80 720 -112
WIRE 624 -64 624 -144
WIRE 688 -64 624 -64
WIRE 960 -48 960 -112
WIRE 960 -48 752 -48
WIRE 1008 -48 960 -48
WIRE 1136 -48 1088 -48
WIRE 1248 -48 1200 -48
WIRE 288 -32 288 -80
WIRE 400 -32 400 -112
WIRE 672 -32 672 -208
WIRE 688 -32 672 -32
WIRE 496 16 496 -80
WIRE 720 16 720 -16
WIRE 720 16 496 16
WIRE 288 80 288 48
WIRE 352 80 288 80
WIRE 400 80 400 48
WIRE 400 80 352 80
WIRE 400 112 400 80
WIRE 544 112 400 112
WIRE 672 112 672 -32
WIRE 672 112 624 112
WIRE 352 128 352 80
FLAG -320 -96 0
FLAG 352 128 0
FLAG -80 -144 0
SYMBOL voltage -320 -224 R0
WINDOW 123 24 44 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value ""
SYMBOL voltage 400 -48 R0
WINDOW 3 24 44 Left 2
WINDOW 123 24 44 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value 15
SYMATTR InstName V2
SYMBOL voltage 288 -48 R0
WINDOW 3 24 44 Left 2
WINDOW 123 24 44 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value -15
SYMATTR InstName V3
SYMBOL res -96 -256 R0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL cap -144 -272 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 49 19 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL Opamps\\LT6203 256 -208 R0
SYMATTR InstName U2
SYMBOL res 720 -320 R0
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL cap 624 -224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 49 19 VTop 2
SYMATTR InstName C2
SYMATTR Value 120p
SYMBOL Opamps\\LT6203 720 -48 R0
SYMATTR InstName U1
SYMBOL res 912 -208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL res 1104 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL cap 1200 -64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 49 19 VTop 2
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL res 640 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value {X}
SYMBOL cap 880 -128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 49 19 VTop 2
SYMATTR InstName C4
SYMATTR Value 2p
TEXT 16 128 Left 2 !.ac dec 10000 1000 100000k
TEXT 16 184 Left 2 !.step param X list 50 100 200 500 1k 2k 4k 10k 20k