* SPICE netlist
XU1 N003 N001 VSP VSN N002 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
V1 N003 N012 PULSE(0 -10m 1u 1n 1n 100m 200m) AC 1.
V2 VSP 0 5V
V3 0 VSN 5V
XU2 N012 N010 VSP VSN N011 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 N009 N004 VSP VSN N005 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 N008 N006 VSP VSN Vout 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
R12 N012 0 10k
R1 N001 N010 1k3
R2 N002 N001 27k
R3 N011 N010 27k
R4 N004 N002 10k
R5 N005 N004 10k
R6 N009 N011 10k
R7 0 N009 10k
R8 N007 N005 39k
R9 N008 N007 39k
C1 N007 Vout 100n
C2 N008 0 100n
R10 N006 0 20k
R11 Vout N006 10k
.dc V1 -100m 100m 1m
;ac dec 1000 1 1000
;tran 60m

* LTspice schematic (.asc)
Version 4
SHEET 1 1920 768
WIRE -160 -368 -240 -368
WIRE -48 -352 -96 -352
WIRE -160 -336 -432 -336
WIRE -48 -272 -48 -352
WIRE 0 -272 -48 -272
WIRE 144 -272 80 -272
WIRE 192 -272 144 -272
WIRE 304 -272 272 -272
WIRE 640 -240 608 -240
WIRE 752 -240 720 -240
WIRE 800 -240 752 -240
WIRE 928 -240 880 -240
WIRE 608 -208 608 -240
WIRE -240 -128 -240 -368
WIRE -176 -128 -240 -128
WIRE -48 -128 -48 -272
WIRE -48 -128 -96 -128
WIRE -240 -112 -240 -128
WIRE 752 -112 752 -240
WIRE 784 -112 752 -112
WIRE 144 -96 144 -272
WIRE 208 -96 144 -96
WIRE 928 -96 928 -240
WIRE 928 -96 848 -96
WIRE 960 -96 928 -96
WIRE 304 -80 304 -272
WIRE 304 -80 272 -80
WIRE 352 -80 304 -80
WIRE 480 -80 432 -80
WIRE 512 -80 480 -80
WIRE 624 -80 592 -80
WIRE 784 -80 624 -80
WIRE -848 -64 -896 -64
WIRE 208 -64 144 -64
WIRE -432 -48 -432 -336
WIRE 480 -48 480 -80
WIRE 624 -48 624 -80
WIRE -896 -16 -896 -64
WIRE -240 -16 -240 -32
WIRE -176 -16 -240 -16
WIRE -48 -16 -96 -16
WIRE 624 48 624 16
WIRE -896 112 -896 64
WIRE -896 112 -960 112
WIRE 480 112 480 16
WIRE 928 112 928 -96
WIRE 928 112 480 112
WIRE -960 128 -960 112
WIRE -48 144 -48 -16
WIRE 0 144 -48 144
WIRE 144 144 144 -64
WIRE 144 144 80 144
WIRE 192 144 144 144
WIRE 320 144 272 144
WIRE 320 176 320 144
WIRE -896 192 -896 112
WIRE -240 208 -240 -16
WIRE -160 208 -240 208
WIRE -48 224 -48 144
WIRE -48 224 -96 224
WIRE -432 240 -432 32
WIRE -160 240 -432 240
WIRE -432 272 -432 240
WIRE -896 336 -896 272
WIRE -848 336 -896 336
WIRE -432 384 -432 352
FLAG -128 -384 VSP
FLAG -848 -64 VSP
FLAG -848 336 VSN
FLAG -128 -320 VSN
FLAG -960 128 0
FLAG -432 384 0
FLAG -128 192 VSP
FLAG 240 -112 VSP
FLAG 816 -128 VSP
FLAG -128 256 VSN
FLAG 240 -48 VSN
FLAG 816 -64 VSN
FLAG 320 176 0
FLAG 624 48 0
FLAG 608 -208 0
FLAG 960 -96 Vout
SYMBOL OpAmps\\UniversalOpAmp2 -128 -352 R0
SYMATTR InstName U1
SYMBOL voltage -432 -64 R0
SYMATTR Value2 AC 1.
SYMATTR InstName V1
SYMATTR Value PULSE(0 -10m 1u 1n 1n 100m 200m)
SYMBOL voltage -896 -32 R0
SYMATTR InstName V2
SYMATTR Value 5V
SYMBOL voltage -896 176 R0
SYMATTR InstName V3
SYMATTR Value 5V
SYMBOL OpAmps\\UniversalOpAmp2 -128 224 R0
SYMATTR InstName U2
SYMBOL OpAmps\\UniversalOpAmp2 240 -80 R0
SYMATTR InstName U3
SYMBOL OpAmps\\UniversalOpAmp2 816 -96 R0
SYMATTR InstName U4
SYMBOL res -448 256 R0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL res -256 -128 R0
SYMATTR InstName R1
SYMATTR Value 1k3
SYMBOL res -80 -144 R90
SYMATTR InstName R2
SYMATTR Value 27k
SYMBOL res -80 -32 R90
SYMATTR InstName R3
SYMATTR Value 27k
SYMBOL res 96 -288 R90
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res 288 -288 R90
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 96 128 R90
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL res 288 128 R90
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL res 448 -96 R90
SYMATTR InstName R8
SYMATTR Value 39k
SYMBOL res 608 -96 R90
SYMATTR InstName R9
SYMATTR Value 39k
SYMBOL cap 464 -48 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL cap 608 -48 R0
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL res 736 -256 R90
SYMATTR InstName R10
SYMATTR Value 20k
SYMBOL res 896 -256 R90
SYMATTR InstName R11
SYMATTR Value 10k