* SPICE netlist
R1 N001 vi 1103
C1 N001 0 52.33nF
R5 N003 N001 1K
C4 N002 N003 3.8nF
R6 v1 N002 1K
R7 N004 v1 3800
XU1 N002 N001 v1 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
XU4 N002 N004 N003 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R8 N004 0 1K
V1 vi 0 AC 1 0
R2 N005 v1 2455
C2 N005 0 42.68nF
R9 N007 N005 1K
C3 N006 N007 564pF
R10 v2 N006 1K
R11 N008 v2 564
XU2 N006 N005 v2 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
XU3 N006 N008 N007 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R12 N008 0 1K
R13 N009 v2 2003
C5 N009 0 64.18nF
R15 N011 N009 1K
C6 N010 N011 564pF
R16 vo N010 1K
R17 N012 vo 564
XU5 N010 N012 N011 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
R18 N012 0 1K
XU6 N010 N009 vo opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
.ac dec 10000 10K 46K

* LTspice schematic (.asc)
Version 4
SHEET 1 1120 1136
WIRE 192 -568 -160 -568
WIRE 336 -552 256 -552
WIRE 416 -552 336 -552
WIRE 192 -536 160 -536
WIRE -496 -408 -512 -408
WIRE -432 -408 -496 -408
WIRE -160 -408 -160 -568
WIRE -160 -408 -352 -408
WIRE -80 -408 -160 -408
WIRE 16 -408 0 -408
WIRE 64 -408 16 -408
WIRE 160 -408 160 -536
WIRE 160 -408 128 -408
WIRE 192 -408 160 -408
WIRE 336 -408 336 -552
WIRE 336 -408 272 -408
WIRE 480 -408 416 -408
WIRE 560 -408 480 -408
WIRE -512 -360 -512 -408
WIRE -160 -360 -160 -408
WIRE 560 -360 560 -408
WIRE 160 -280 160 -408
WIRE 160 -280 128 -280
WIRE 16 -264 16 -408
WIRE 64 -264 16 -264
WIRE -512 -248 -512 -280
WIRE -160 -248 -160 -296
WIRE 480 -248 480 -408
WIRE 480 -248 128 -248
WIRE 560 -248 560 -280
WIRE 144 -168 -208 -168
WIRE 288 -152 208 -152
WIRE 352 -152 288 -152
WIRE 144 -136 112 -136
WIRE -544 -8 -560 -8
WIRE -480 -8 -544 -8
WIRE -208 -8 -208 -168
WIRE -208 -8 -400 -8
WIRE -128 -8 -208 -8
WIRE -32 -8 -48 -8
WIRE 16 -8 -32 -8
WIRE 112 -8 112 -136
WIRE 112 -8 80 -8
WIRE 144 -8 112 -8
WIRE 288 -8 288 -152
WIRE 288 -8 224 -8
WIRE 432 -8 368 -8
WIRE 512 -8 432 -8
WIRE -208 40 -208 -8
WIRE 512 40 512 -8
WIRE 112 120 112 -8
WIRE 112 120 80 120
WIRE -32 136 -32 -8
WIRE 16 136 -32 136
WIRE -208 152 -208 104
WIRE 432 152 432 -8
WIRE 432 152 80 152
WIRE 512 152 512 120
WIRE 192 248 -160 248
WIRE 336 264 256 264
WIRE 560 264 336 264
WIRE 192 280 160 280
WIRE -496 408 -512 408
WIRE -432 408 -496 408
WIRE -160 408 -160 248
WIRE -160 408 -352 408
WIRE -80 408 -160 408
WIRE 16 408 0 408
WIRE 64 408 16 408
WIRE 160 408 160 280
WIRE 160 408 128 408
WIRE 192 408 160 408
WIRE 336 408 336 264
WIRE 336 408 272 408
WIRE 480 408 416 408
WIRE 560 408 480 408
WIRE -160 456 -160 408
WIRE 560 456 560 408
WIRE 160 536 160 408
WIRE 160 536 128 536
WIRE 16 552 16 408
WIRE 64 552 16 552
WIRE -160 568 -160 520
WIRE 480 568 480 408
WIRE 480 568 128 568
WIRE 560 568 560 536
FLAG -496 -408 vi
FLAG 560 -248 0
FLAG -512 -248 0
FLAG 416 -552 v1
FLAG -544 -8 v1
FLAG 512 152 0
FLAG 352 -152 v2
FLAG -496 408 v2
FLAG 560 568 0
FLAG 560 264 vo
FLAG -160 -248 0
FLAG -160 568 0
FLAG -208 152 0
SYMBOL res -336 -424 R90
SYMATTR InstName R1
SYMATTR Value 1103
SYMBOL cap -176 -360 R0
SYMATTR InstName C1
SYMATTR Value 52.33nF
SYMBOL res 16 -424 R90
SYMATTR InstName R5
SYMATTR Value 1K
SYMBOL cap 128 -424 R90
SYMATTR InstName C4
SYMATTR Value 3.8nF
SYMBOL res 288 -424 R90
SYMATTR InstName R6
SYMATTR Value 1K
SYMBOL res 432 -424 R90
SYMATTR InstName R7
SYMATTR Value 3800
SYMBOL OpAmps\\opamp 224 -488 M180
SYMATTR InstName U1
SYMBOL OpAmps\\opamp 96 -328 M0
SYMATTR InstName U4
SYMBOL res 544 -376 R0
SYMATTR InstName R8
SYMATTR Value 1K
SYMBOL voltage -512 -376 R0
SYMATTR InstName V1
SYMATTR Value ""
SYMATTR Value2 AC 1 0
SYMBOL res -384 -24 R90
SYMATTR InstName R2
SYMATTR Value 2455
SYMBOL cap -224 40 R0
SYMATTR InstName C2
SYMATTR Value 42.68nF
SYMBOL res -32 -24 R90
SYMATTR InstName R9
SYMATTR Value 1K
SYMBOL cap 80 -24 R90
SYMATTR InstName C3
SYMATTR Value 564pF
SYMBOL res 240 -24 R90
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL res 384 -24 R90
SYMATTR InstName R11
SYMATTR Value 564
SYMBOL OpAmps\\opamp 176 -88 M180
SYMATTR InstName U2
SYMBOL OpAmps\\opamp 48 72 M0
SYMATTR InstName U3
SYMBOL res 496 24 R0
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL res -336 392 R90
SYMATTR InstName R13
SYMATTR Value 2003
SYMBOL cap -176 456 R0
SYMATTR InstName C5
SYMATTR Value 64.18nF
SYMBOL res 16 392 R90
SYMATTR InstName R15
SYMATTR Value 1K
SYMBOL cap 128 392 R90
SYMATTR InstName C6
SYMATTR Value 564pF
SYMBOL res 288 392 R90
SYMATTR InstName R16
SYMATTR Value 1K
SYMBOL res 432 392 R90
SYMATTR InstName R17
SYMATTR Value 564
SYMBOL OpAmps\\opamp 96 488 M0
SYMATTR InstName U5
SYMBOL res 544 440 R0
SYMATTR InstName R18
SYMATTR Value 1K
SYMBOL OpAmps\\opamp 224 328 M180
SYMATTR InstName U6