* SPICE netlist
V1 plus 0 30
V2 0 min 30
V3 Vin 0 AC 1
R1 N001 Vin 10k
R2 N003 N001 10k
C1 N001 0 337n
C2 N002 N003 75n
R3 N002 N001 10k
XU1 0 N003 plus min N002 OP27 ;pnba In+)In-)V+)V-)OUT
XU2 0 N004 plus min N005 OP27 ;pnba In+)In-)V+)V-)OUT
R4 N004 N006 40k
R5 N005 N004 10k
XU3 0 N011 plus min N008 OP27 ;pnba In+)In-)V+)V-)OUT
C3 N007 Vin 16n
C4 N011 N007 16n
C5 N008 N007 16n
R6 N008 N011 21k
R7 N007 0 4k7
XU5 N008 N012 plus min N012 OP27 ;pnba In+)In-)V+)V-)OUT
R8 N013 N020 10k
R10 N017 N013 10k
C6 N013 0 33n8
C7 N014 N017 7n5
R11 N014 N013 10k
XU6 0 N017 plus min N014 OP27 ;pnba In+)In-)V+)V-)OUT
XU7 0 N018 plus min N016 OP27 ;pnba In+)In-)V+)V-)OUT
C8 N015 N014 160n
C9 N018 N015 160n
C10 N016 N015 160n
R12 N016 N018 21k
R13 N015 0 4k7
R14 N004 N012 2k5
XU4 N009 N010 plus min N010 OP27 ;pnba In+)In-)V+)V-)OUT
R9 N009 NC_01 34k
C13 N009 0 47n
XU8 N019 N020 plus min N020 OP27 ;pnba In+)In-)V+)V-)OUT
R15 0 N019 34k
C14 N019 Vin 47n
XU9 N016 N021 plus min N021 OP27 ;pnba In+)In-)V+)V-)OUT
XU10 N002 N006 plus min N006 OP27 ;pnba In+)In-)V+)V-)OUT
.ac dec 200 1 1meg

* LTspice schematic (.asc)
Version 4.1
SHEET 1 2320 1344
WIRE -392 -576 -520 -576
WIRE 200 -512 8 -512
WIRE 472 -512 280 -512
WIRE 216 -416 184 -416
WIRE 472 -416 472 -512
WIRE 472 -416 280 -416
WIRE 1016 -416 984 -416
WIRE 1160 -416 1096 -416
WIRE -216 -336 -824 -336
WIRE -824 -320 -824 -336
WIRE -216 -320 -216 -336
WIRE -216 -320 -232 -320
WIRE -120 -320 -216 -320
WIRE -8 -320 -40 -320
WIRE 8 -320 8 -512
WIRE 8 -320 -8 -320
WIRE 40 -320 8 -320
WIRE 184 -320 184 -416
WIRE 184 -320 120 -320
WIRE 248 -320 184 -320
WIRE 472 -320 472 -416
WIRE 728 -320 472 -320
WIRE -824 -304 -824 -320
WIRE 472 -304 472 -320
WIRE 472 -304 312 -304
WIRE 856 -304 792 -304
WIRE 984 -304 984 -416
WIRE 984 -304 936 -304
WIRE 1032 -304 984 -304
WIRE 248 -288 216 -288
WIRE 728 -288 712 -288
WIRE 1160 -288 1160 -416
WIRE 1160 -288 1096 -288
WIRE 1032 -272 984 -272
WIRE 712 -240 712 -288
WIRE 856 -240 856 -304
WIRE 856 -240 712 -240
WIRE 216 -208 216 -288
WIRE 984 -208 984 -272
WIRE 200 -112 8 -112
WIRE 472 -112 264 -112
WIRE -536 -80 -568 -80
WIRE -440 -80 -536 -80
WIRE -536 -64 -536 -80
WIRE -312 -64 -376 -64
WIRE -440 -48 -456 -48
WIRE 216 -16 184 -16
WIRE 472 -16 472 -112
WIRE 472 -16 296 -16
WIRE -456 0 -456 -48
WIRE -312 0 -312 -64
WIRE -312 0 -456 0
WIRE 8 80 8 -112
WIRE 8 80 -40 80
WIRE 40 80 8 80
WIRE 184 80 184 -16
WIRE 184 80 104 80
WIRE 248 80 184 80
WIRE 472 80 472 -16
WIRE 632 80 472 80
WIRE 472 96 472 80
WIRE 472 96 312 96
WIRE 760 96 696 96
WIRE 856 96 760 96
WIRE 936 96 936 -304
WIRE 248 112 216 112
WIRE 632 112 616 112
WIRE 216 144 216 112
WIRE 616 160 616 112
WIRE 760 160 760 96
WIRE 760 160 616 160
WIRE -408 368 -600 368
WIRE -136 368 -328 368
WIRE 216 384 24 384
WIRE 488 384 280 384
WIRE -392 464 -424 464
WIRE -136 464 -136 368
WIRE -136 464 -328 464
WIRE 232 480 200 480
WIRE 488 480 488 384
WIRE 488 480 312 480
WIRE -1144 544 -1160 544
WIRE -1048 544 -1080 544
WIRE -952 544 -1048 544
WIRE -1048 560 -1048 544
WIRE -824 560 -888 560
WIRE -728 560 -824 560
WIRE -616 560 -648 560
WIRE -600 560 -600 368
WIRE -600 560 -616 560
WIRE -568 560 -600 560
WIRE -424 560 -424 464
WIRE -424 560 -488 560
WIRE -360 560 -424 560
WIRE -952 576 -968 576
WIRE -136 576 -136 464
WIRE -136 576 -296 576
WIRE -88 576 -136 576
WIRE 24 576 24 384
WIRE 24 576 -24 576
WIRE 56 576 24 576
WIRE 200 576 200 480
WIRE 200 576 120 576
WIRE 264 576 200 576
WIRE -360 592 -392 592
WIRE 488 592 488 480
WIRE 488 592 328 592
WIRE 712 592 488 592
WIRE 264 608 232 608
WIRE 840 608 776 608
WIRE 936 608 936 96
WIRE 936 608 920 608
WIRE -968 624 -968 576
WIRE -824 624 -824 560
WIRE -824 624 -968 624
WIRE 712 624 696 624
WIRE 232 640 232 608
WIRE -392 672 -392 592
WIRE 696 672 696 624
WIRE 840 672 840 608
WIRE 840 672 696 672
FLAG -520 -576 0
FLAG -392 -496 min
FLAG -392 -656 plus
FLAG -824 -224 0
FLAG -8 -256 0
FLAG 280 -272 min
FLAG 280 -336 plus
FLAG 216 -208 0
FLAG 1064 -256 min
FLAG 1064 -320 plus
FLAG 984 -208 0
FLAG 280 128 min
FLAG 280 64 plus
FLAG 8 160 0
FLAG 216 144 0
FLAG -824 -320 Vin
FLAG -104 80 Vin
FLAG 664 128 plus
FLAG 664 64 min
FLAG -616 624 0
FLAG -328 608 min
FLAG -328 544 plus
FLAG -392 672 0
FLAG 296 624 min
FLAG 296 560 plus
FLAG 24 656 0
FLAG 232 640 0
FLAG -1160 544 Vin
FLAG -408 -32 plus
FLAG -408 -96 min
FLAG -536 0 0
FLAG -920 592 plus
FLAG -920 528 min
FLAG -1048 640 0
FLAG 744 640 plus
FLAG 744 576 min
FLAG 760 -272 plus
FLAG 760 -336 min
SYMBOL voltage -392 -672 R0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL voltage -392 -592 R0
SYMATTR InstName V2
SYMATTR Value 30
SYMBOL voltage -824 -320 R0
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value ""
SYMBOL res -24 -336 R90
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 136 -336 R90
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL cap -24 -320 R0
SYMATTR InstName C1
SYMATTR Value 337n
SYMBOL cap 280 -432 R90
SYMATTR InstName C2
SYMATTR Value 75n
SYMBOL res 296 -528 R90
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL OpAmps\\OP27 280 -368 R0
SYMATTR InstName U1
SYMBOL OpAmps\\OP27 1064 -352 R0
SYMATTR InstName U2
SYMBOL res 952 -320 R90
SYMATTR InstName R4
SYMATTR Value 40k
SYMBOL res 1112 -432 R90
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL OpAmps\\OP27 280 32 R0
SYMATTR InstName U3
SYMBOL cap -40 64 R90
SYMATTR InstName C3
SYMATTR Value 16n
SYMBOL cap 104 64 R90
SYMATTR InstName C4
SYMATTR Value 16n
SYMBOL cap 264 -128 R90
SYMATTR InstName C5
SYMATTR Value 16n
SYMBOL res 312 -32 R90
SYMATTR InstName R6
SYMATTR Value 21k
SYMBOL res -8 64 R0
SYMATTR InstName R7
SYMATTR Value 4k7
SYMBOL OpAmps\\OP27 664 160 M180
SYMATTR InstName U5
SYMBOL res -632 544 R90
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL res -472 544 R90
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL cap -632 560 R0
SYMATTR InstName C6
SYMATTR Value 33n8
SYMBOL cap -328 448 R90
SYMATTR InstName C7
SYMATTR Value 7n5
SYMBOL res -312 352 R90
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL OpAmps\\OP27 -328 512 R0
SYMATTR InstName U6
SYMBOL OpAmps\\OP27 296 528 R0
SYMATTR InstName U7
SYMBOL cap -24 560 R90
SYMATTR InstName C8
SYMATTR Value 160n
SYMBOL cap 120 560 R90
SYMATTR InstName C9
SYMATTR Value 160n
SYMBOL cap 280 368 R90
SYMATTR InstName C10
SYMATTR Value 160n
SYMBOL res 328 464 R90
SYMATTR InstName R12
SYMATTR Value 21k
SYMBOL res 8 560 R0
SYMATTR InstName R13
SYMATTR Value 4k7
SYMBOL res 952 80 R90
SYMATTR InstName R14
SYMATTR Value 2k5
SYMBOL OpAmps\\OP27 -408 0 M180
SYMATTR InstName U4
SYMBOL res -552 -96 R90
SYMATTR InstName R9
SYMATTR Value 34k
SYMBOL cap -552 -64 R0
SYMATTR InstName C13
SYMATTR Value 47n
SYMBOL OpAmps\\OP27 -920 624 M180
SYMATTR InstName U8
SYMBOL res -1032 656 R180
SYMATTR InstName R15
SYMATTR Value 34k
SYMBOL cap -1080 528 R90
SYMATTR InstName C14
SYMATTR Value 47n
SYMBOL OpAmps\\OP27 744 672 M180
SYMATTR InstName U9
SYMBOL OpAmps\\OP27 760 -240 M180
SYMATTR InstName U10