Version 4
SHEET 1 1288 1172
WIRE -32 -112 -96 -112
WIRE 96 -112 32 -112
WIRE 256 -80 256 -112
WIRE 368 -80 368 -112
WIRE -272 0 -352 0
WIRE -144 0 -192 0
WIRE -96 0 -96 -112
WIRE -96 0 -144 0
WIRE -32 0 -96 0
WIRE 96 0 96 -112
WIRE 96 0 48 0
WIRE -352 32 -352 0
WIRE 256 32 256 0
WIRE 368 32 368 0
WIRE -352 128 -352 112
WIRE 0 192 0 160
WIRE -96 208 -96 0
WIRE -32 208 -96 208
WIRE 96 224 96 0
WIRE 96 224 32 224
WIRE 176 224 96 224
WIRE 256 224 176 224
WIRE -96 240 -176 240
WIRE -32 240 -96 240
WIRE 0 288 0 256
FLAG 368 32 0
FLAG -176 240 0
FLAG -352 128 0
FLAG 256 224 out
IOPIN 256 224 Out
FLAG 256 32 0
FLAG -352 0 in
FLAG 0 160 V+
FLAG 0 288 V-
FLAG 256 -112 V-
FLAG 368 -112 V+
DATAFLAG 176 224 "round($*1k)/1k"
DATAFLAG -96 240 "round($*1k)/1k"
DATAFLAG -144 0 "round($*1k)/1k"
SYMBOL voltage 368 -96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 256 -96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL res -176 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 400
SYMBOL voltage -352 16 R0
WINDOW 3 41 131 Left 2
WINDOW 123 29 93 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 0.1 0 1n 1n 500n 1u)
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMBOL cap 32 -128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1p
SYMBOL res 64 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 4000
SYMBOL Robertugo\\opamp5 0 160 R0
SYMATTR InstName U1
SYMATTR SpiceModel AD8028
TEXT 128 144 Left 2 ;Universal Symbol \n"opamp2" used
TEXT -392 -224 Left 2 !.options plotwinsize=0
TEXT -392 -176 Left 2 ;.ac dec 100 100 100meg
TEXT -392 -200 Left 2 !.op
TEXT -96 -232 Left 2 ;Warning, I changed the direction of the current source "ib4" \nin the model file, because I am convinced it was wrong!
TEXT -392 -248 Left 2 !.tran 5u