Version 4
SHEET 1 880 748
WIRE -16 368 -16 352
WIRE 512 352 512 176
WIRE 0 192 -16 192
WIRE 64 256 64 352
WIRE 128 192 176 192
WIRE 368 352 512 352
WIRE 240 352 64 352
WIRE -16 272 -16 192
WIRE 240 176 256 176
WIRE -176 32 -160 32
WIRE -288 32 -256 32
WIRE -64 32 -48 32
WIRE -160 32 -160 64
WIRE -160 32 -144 32
WIRE 208 144 208 112
WIRE 160 0 144 0
WIRE 48 0 48 64
WIRE 240 0 256 0
WIRE 256 0 256 176
WIRE 144 0 144 160
WIRE 144 0 128 0
WIRE 144 160 176 160
WIRE 208 208 208 224
WIRE 256 176 288 176
WIRE 288 176 320 176
WIRE 400 176 432 176
WIRE 432 176 512 176
WIRE 432 240 432 304
FLAG -16 368 0
FLAG 432 304 0
FLAG 288 176 Vrcbf
FLAG 432 176 Vsbf
FLAG -160 64 0
FLAG -48 32 Vcc
FLAG -288 32 Vee
FLAG 208 224 Vee
FLAG 208 112 Vcc
FLAG 48 64 0
SYMBOL voltage -16 256 R0
WINDOW 3 -380 202 Left 0
WINDOW 123 -312 19 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 1 0.5m 1n 1n 1m 2m)
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMBOL res 416 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap 416 176 R0
SYMATTR InstName C1
SYMATTR Value 1µ
SYMBOL SP_symb\\diff1 112 144 R0
WINDOW 3 -29 109 Left 0
SYMATTR InstName U1
SYMBOL SP_symb\\gain 256 304 M0
WINDOW 3 -91 49 Left 0
WINDOW 39 -36 15 Left 0
SYMATTR SpiceLine G=1-1/({Gbo + 1})
SYMATTR InstName U3
SYMBOL Opamps\\LT1037 208 112 R0
SYMATTR InstName U4
SYMBOL voltage -48 32 R90
WINDOW 0 -32 56 VBottom 0
WINDOW 3 32 56 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 10
SYMBOL voltage -160 32 R90
WINDOW 0 -32 56 VBottom 0
WINDOW 3 32 56 VTop 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 10
SYMBOL res 144 -16 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 256 -16 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 -2 -71 VTop 0
SYMATTR InstName R3
SYMATTR Value {Gbo*1000}
TEXT -328 240 Left 0 !.tran 0 2m 0 1u
TEXT -328 352 Left 0 !.include SP.lib
TEXT -392 416 Left 0 !.step param Gbo list 5 20 100
TEXT -328 200 Left 0 !;ac dec 100 100 100k