Version 4
SHEET 1 1288 776
WIRE 256 -64 160 -64
WIRE 400 -64 320 -64
WIRE 160 32 160 -64
WIRE 240 32 160 32
WIRE 400 32 400 -64
WIRE 400 32 320 32
WIRE 480 32 400 32
WIRE 400 64 400 32
WIRE 272 176 272 160
WIRE -80 192 -224 192
WIRE 0 192 -80 192
WIRE 64 192 0 192
WIRE 160 192 160 32
WIRE 160 192 64 192
WIRE 240 192 160 192
WIRE 400 208 400 144
WIRE 400 208 304 208
WIRE 480 208 400 208
WIRE -224 224 -224 192
WIRE -80 224 -80 192
WIRE 240 224 160 224
WIRE 64 240 64 192
WIRE 400 240 400 208
WIRE 272 256 272 240
WIRE -224 336 -224 304
WIRE -80 336 -80 304
WIRE 64 336 64 304
WIRE 160 336 160 224
WIRE 400 336 400 320
WIRE -224 480 -224 448
WIRE -80 480 -80 448
WIRE -224 592 -224 560
WIRE -80 592 -80 560
FLAG -80 448 -V
FLAG 272 160 +V
FLAG -80 592 0
FLAG 0 192 n1
FLAG 480 208 out
FLAG 272 256 -V
FLAG -224 336 0
FLAG 400 336 0
FLAG -224 592 0
FLAG -224 448 +V
FLAG 64 336 0
FLAG -80 336 0
FLAG 160 336 0
FLAG 480 32 out1
SYMBOL res 336 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 15k
SYMBOL voltage -80 464 R0
SYMATTR InstName V1
SYMATTR Value -15
SYMBOL res 384 224 R0
SYMATTR InstName Rload
SYMATTR Value 10k
SYMBOL voltage -224 464 R0
SYMATTR InstName V3
SYMATTR Value 15
SYMBOL Opamps\\opamp2 272 144 R0
SYMATTR InstName U1
SYMATTR Value OPA604
SYMBOL cap 256 -48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value {CF}
SYMBOL res -96 208 R0
SYMATTR InstName R2
SYMATTR Value 350Meg
SYMBOL cap 48 240 R0
SYMATTR InstName C2
SYMATTR Value 45p
SYMBOL voltage 400 48 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 0
SYMATTR Value2 AC {x}
SYMBOL current -224 224 R0
WINDOW 123 -12 150 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 0
SYMATTR Value2 AC {(1-x)/15k}
TEXT -240 -160 Left 2 !.op
TEXT -240 -88 Left 2 ;.tran 0 100u 0 5n
TEXT -240 -56 Left 2 !.options plotwinsize=0
TEXT -240 -208 Left 2 !.lib OPA604.LIB
TEXT -240 -128 Left 2 !.ac dec 100 10 10Meg
TEXT 64 -208 Left 2 !.step param CF list 5.6p 10p 15p 22p\n.step param x list 0 1