* SPICE netlist
R1 N002 N001 8
V1 N001 0 AC 1 0
R6 N005 N004 17.85
XU5 N002 N013 N003 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R11 N010 N002 1
C7 N013 N010 1
XU6 N013 N016 N010 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R12 N003 N013 1
R13 N016 N003 1
R14 N016 0 1
C8 N002 0 1
C1 N005 0 1
XU1 N005 N014 N006 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R4 N011 N005 1
C2 N014 N011 1.22
XU2 N014 N017 N011 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R5 N006 N014 1
R7 N017 N006 1
R8 N017 0 1
R9 N008 N007 14.7
C4 N008 0 1
XU3 N008 N015 N009 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R17 N012 N008 1
C5 N015 N012 0.82
XU4 N015 N018 N012 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R18 N009 N015 1
R19 N018 N009 1
R20 N018 0 1
R22 N004 N003 1
R23 N004 0 1
R2 N007 N006 1
R3 N007 0 1
R15 Vo N009 1
R16 Vo 0 1
.ac dec 10000 0.1 13000

* LTspice schematic (.asc)
Version 4
SHEET 1 2384 784
WIRE -1160 -376 -1192 -376
WIRE -1032 -376 -1080 -376
WIRE -792 -376 -1032 -376
WIRE -600 -376 -664 -376
WIRE -456 -376 -520 -376
WIRE -392 -376 -456 -376
WIRE -264 -376 -312 -376
WIRE -88 -376 -264 -376
WIRE 168 -376 40 -376
WIRE 328 -376 248 -376
WIRE 392 -376 328 -376
WIRE 520 -376 472 -376
WIRE 696 -376 520 -376
WIRE 936 -376 856 -376
WIRE 1080 -376 1016 -376
WIRE 1192 -376 1080 -376
WIRE -1192 -344 -1192 -376
WIRE -1032 -328 -1032 -376
WIRE 1080 -328 1080 -376
WIRE -456 -312 -456 -376
WIRE -264 -312 -264 -376
WIRE 328 -312 328 -376
WIRE 520 -312 520 -376
WIRE -792 -248 -792 -376
WIRE -792 -248 -888 -248
WIRE -1192 -232 -1192 -264
WIRE -1032 -232 -1032 -264
WIRE -88 -232 -88 -376
WIRE -88 -232 -184 -232
WIRE 696 -232 696 -376
WIRE 696 -232 600 -232
WIRE -888 -216 -888 -248
WIRE -184 -200 -184 -232
WIRE 600 -200 600 -232
WIRE -456 -184 -456 -232
WIRE 1080 -184 1080 -248
WIRE -264 -168 -264 -248
WIRE 520 -168 520 -248
WIRE 328 -136 328 -232
WIRE -888 -120 -888 -136
WIRE -888 -120 -968 -120
WIRE -968 -104 -968 -120
WIRE -184 -104 -184 -120
WIRE -184 -104 -264 -104
WIRE 600 -104 600 -120
WIRE 600 -104 520 -104
WIRE -888 -88 -888 -120
WIRE -264 -88 -264 -104
WIRE 520 -88 520 -104
WIRE -184 -72 -184 -104
WIRE 600 -72 600 -104
WIRE -952 8 -952 -40
WIRE -888 8 -888 -24
WIRE -888 8 -952 8
WIRE -824 8 -888 8
WIRE -248 24 -248 -24
WIRE -184 24 -184 -8
WIRE -184 24 -248 24
WIRE -120 24 -184 24
WIRE 536 24 536 -24
WIRE 600 24 600 -8
WIRE 600 24 536 24
WIRE 664 24 600 24
WIRE -888 40 -888 8
WIRE -824 56 -824 8
WIRE -792 56 -792 -248
WIRE -184 56 -184 24
WIRE 600 56 600 24
WIRE -120 72 -120 24
WIRE -88 72 -88 -232
WIRE 664 72 664 24
WIRE 696 72 696 -232
WIRE -888 152 -888 120
WIRE -808 152 -808 120
WIRE -808 152 -888 152
WIRE -664 152 -664 -376
WIRE -664 152 -808 152
WIRE -888 168 -888 152
WIRE -184 168 -184 136
WIRE -104 168 -104 136
WIRE -104 168 -184 168
WIRE 40 168 40 -376
WIRE 40 168 -104 168
WIRE 600 168 600 136
WIRE 680 168 680 136
WIRE 680 168 600 168
WIRE 856 168 856 -376
WIRE 856 168 680 168
WIRE -184 184 -184 168
WIRE 600 184 600 168
WIRE -984 296 -984 -40
WIRE -888 296 -888 248
WIRE -888 296 -984 296
WIRE -280 312 -280 -24
WIRE -184 312 -184 264
WIRE -184 312 -280 312
WIRE 504 312 504 -24
WIRE 600 312 600 264
WIRE 600 312 504 312
WIRE -1016 376 -1048 376
WIRE -888 376 -888 296
WIRE -888 376 -936 376
WIRE -312 392 -344 392
WIRE -184 392 -184 312
WIRE -184 392 -232 392
WIRE 472 392 440 392
WIRE 600 392 600 312
WIRE 600 392 552 392
FLAG -1192 -232 0
FLAG -1048 376 0
FLAG -1032 -232 0
FLAG -264 -168 0
FLAG -344 392 0
FLAG 520 -168 0
FLAG 440 392 0
FLAG -456 -184 0
FLAG 328 -136 0
FLAG 1080 -184 0
FLAG 1192 -376 Vo
SYMBOL res -1064 -392 R90
SYMATTR InstName R1
SYMATTR Value 8
SYMBOL voltage -1192 -360 R0
SYMATTR Value2 AC 1 0
SYMATTR InstName V1
SYMATTR Value ""
SYMBOL res -296 -392 R90
SYMATTR InstName R6
SYMATTR Value 17.85
SYMBOL OpAmps\\opamp -744 88 R90
SYMATTR InstName U5
SYMBOL res -872 -120 R180
SYMATTR InstName R11
SYMATTR Value 1
SYMBOL cap -872 -24 R180
SYMATTR InstName C7
SYMATTR Value 1
SYMBOL OpAmps\\opamp -904 -72 M270
SYMATTR InstName U6
SYMBOL res -872 136 R180
SYMATTR InstName R12
SYMATTR Value 1
SYMBOL res -872 264 R180
SYMATTR InstName R13
SYMATTR Value 1
SYMBOL res -920 360 R90
SYMATTR InstName R14
SYMATTR Value 1
SYMBOL cap -1048 -328 R0
SYMATTR InstName C8
SYMATTR Value 1
SYMBOL cap -280 -312 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL OpAmps\\opamp -40 104 R90
SYMATTR InstName U1
SYMBOL res -168 -104 R180
SYMATTR InstName R4
SYMATTR Value 1
SYMBOL cap -168 -8 R180
SYMATTR InstName C2
SYMATTR Value 1.22
SYMBOL OpAmps\\opamp -200 -56 M270
SYMATTR InstName U2
SYMBOL res -168 152 R180
SYMATTR InstName R5
SYMATTR Value 1
SYMBOL res -168 280 R180
SYMATTR InstName R7
SYMATTR Value 1
SYMBOL res -216 376 R90
SYMATTR InstName R8
SYMATTR Value 1
SYMBOL res 488 -392 R90
SYMATTR InstName R9
SYMATTR Value 14.7
SYMBOL cap 504 -312 R0
SYMATTR InstName C4
SYMATTR Value 1
SYMBOL OpAmps\\opamp 744 104 R90
SYMATTR InstName U3
SYMBOL res 616 -104 R180
SYMATTR InstName R17
SYMATTR Value 1
SYMBOL cap 616 -8 R180
SYMATTR InstName C5
SYMATTR Value 0.82
SYMBOL OpAmps\\opamp 584 -56 M270
SYMATTR InstName U4
SYMBOL res 616 152 R180
SYMATTR InstName R18
SYMATTR Value 1
SYMBOL res 616 280 R180
SYMATTR InstName R19
SYMATTR Value 1
SYMBOL res 568 376 R90
SYMATTR InstName R20
SYMATTR Value 1
SYMBOL res -504 -392 R90
SYMATTR InstName R22
SYMATTR Value 1
SYMBOL res -472 -328 R0
SYMATTR InstName R23
SYMATTR Value 1
SYMBOL res 264 -392 R90
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL res 312 -328 R0
SYMATTR InstName R3
SYMATTR Value 1
SYMBOL res 1032 -392 R90
SYMATTR InstName R15
SYMATTR Value 1
SYMBOL res 1064 -344 R0
SYMATTR InstName R16
SYMATTR Value 1