* SPICE netlist
V1 +V 0 5
V2 -V 0 -5
C1 N001 IN .015
C2 N005 N001 .015
R1 N009 IN 215K
R2 N005 N009 215K
C3 N009 0 .03
R3 N002 N001 100K
R4 N005 0 215K
C4 N005 0 .1
R5 N002 N008 200K
R6 N008 0 100K
C5 N002 N008 .01
V3 IN 0 AC 1
R7 N002 N006 10K
C6 N006 0 .1
C7 N003 N006 .015
C8 N007 N003 .015
R8 N011 N006 169K
R9 N007 N011 169K
C9 N011 0 .03
R10 N004 N003 80.6K
R11 N007 0 169K
C10 N007 0 .1
R12 N004 N010 200K
R13 N010 0 100K
C11 N004 N010 .01
R14 OUT N004 10K
C12 0 OUT .1
XU1 N005 N008 +V -V N002 LT1494 ;pnba In+)In-)V+)V-)OUT
XU2 N007 N010 +V -V N004 LT1494 ;pnba In+)In-)V+)V-)OUT
.ac oct 100 1 1K

* LTspice schematic (.asc)
Version 4
SHEET 1 1616 448
WIRE -408 -208 -600 -208
WIRE -120 -208 -328 -208
WIRE 344 -192 152 -192
WIRE 632 -192 424 -192
WIRE -680 -144 -712 -144
WIRE -600 -144 -600 -208
WIRE -600 -144 -616 -144
WIRE -584 -144 -600 -144
WIRE -488 -144 -520 -144
WIRE 72 -128 40 -128
WIRE 152 -128 152 -192
WIRE 152 -128 136 -128
WIRE 168 -128 152 -128
WIRE 264 -128 232 -128
WIRE -232 -112 -232 -128
WIRE -712 -96 -712 -144
WIRE -712 -96 -808 -96
WIRE -488 -96 -488 -144
WIRE -456 -96 -488 -96
WIRE -360 -96 -456 -96
WIRE -264 -96 -360 -96
WIRE 520 -96 520 -112
WIRE -808 -80 -808 -96
WIRE -456 -80 -456 -96
WIRE -360 -80 -360 -96
WIRE -120 -80 -120 -208
WIRE -120 -80 -200 -80
WIRE -104 -80 -120 -80
WIRE -8 -80 -24 -80
WIRE 40 -80 40 -128
WIRE 40 -80 -8 -80
WIRE 264 -80 264 -128
WIRE 296 -80 264 -80
WIRE 392 -80 296 -80
WIRE 488 -80 392 -80
WIRE -264 -64 -296 -64
WIRE -8 -64 -8 -80
WIRE 296 -64 296 -80
WIRE 392 -64 392 -80
WIRE 632 -64 632 -192
WIRE 632 -64 552 -64
WIRE 648 -64 632 -64
WIRE 760 -64 728 -64
WIRE 808 -64 760 -64
WIRE -712 -48 -712 -96
WIRE -696 -48 -712 -48
WIRE -600 -48 -616 -48
WIRE -584 -48 -600 -48
WIRE -488 -48 -488 -96
WIRE -488 -48 -504 -48
WIRE 488 -48 456 -48
WIRE -232 -32 -232 -48
WIRE 40 -32 40 -80
WIRE 56 -32 40 -32
WIRE 152 -32 136 -32
WIRE 168 -32 152 -32
WIRE 264 -32 264 -80
WIRE 264 -32 248 -32
WIRE 760 -32 760 -64
WIRE 520 -16 520 -32
WIRE -600 0 -600 -48
WIRE -808 16 -808 0
WIRE -456 16 -456 0
WIRE -360 16 -360 -16
WIRE -296 16 -296 -64
WIRE -200 16 -296 16
WIRE -120 16 -120 -80
WIRE -120 16 -136 16
WIRE -8 16 -8 0
WIRE 152 16 152 -32
WIRE 296 32 296 16
WIRE 392 32 392 0
WIRE 456 32 456 -48
WIRE 552 32 456 32
WIRE 632 32 632 -64
WIRE 632 32 616 32
WIRE 760 48 760 32
WIRE -600 80 -600 64
WIRE 152 96 152 80
WIRE -392 112 -408 112
WIRE -296 112 -296 16
WIRE -296 112 -312 112
WIRE -232 112 -296 112
WIRE -120 112 -120 16
WIRE -120 112 -152 112
WIRE -40 128 -40 112
WIRE 56 128 56 112
WIRE 360 144 344 144
WIRE 456 144 456 32
WIRE 456 144 440 144
WIRE 520 144 456 144
WIRE 632 144 632 32
WIRE 632 144 600 144
WIRE -40 224 -40 208
WIRE 56 224 56 208
FLAG 56 224 0
FLAG -232 -32 +V
FLAG 56 112 +V
FLAG -232 -128 -V
FLAG -40 224 0
FLAG -40 112 -V
FLAG -600 80 0
FLAG -808 16 0
FLAG -360 16 0
FLAG -456 16 0
FLAG -408 112 0
FLAG 520 -16 +V
FLAG 520 -112 -V
FLAG 152 96 0
FLAG 392 32 0
FLAG 296 32 0
FLAG 344 144 0
FLAG 760 48 0
FLAG 808 -64 OUT
FLAG -808 -96 IN
FLAG -8 16 0
SYMBOL voltage 56 112 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -40 112 R0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL cap -616 -160 R90
SYMATTR InstName C1
SYMATTR Value .015
SYMBOL cap -520 -160 R90
SYMATTR InstName C2
SYMATTR Value .015
SYMBOL res -600 -64 R90
SYMATTR InstName R1
SYMATTR Value 215K
SYMBOL res -488 -64 R90
SYMATTR InstName R2
SYMATTR Value 215K
SYMBOL cap -616 0 R0
SYMATTR InstName C3
SYMATTR Value .03
SYMBOL res -312 -224 R90
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res -472 -96 R0
SYMATTR InstName R4
SYMATTR Value 215K
SYMBOL cap -376 -80 R0
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL res -136 96 R90
SYMATTR InstName R5
SYMATTR Value 200K
SYMBOL res -296 96 R90
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL cap -136 0 R90
SYMATTR InstName C5
SYMATTR Value .01
SYMBOL voltage -808 -96 R0
SYMATTR InstName V3
SYMATTR Value AC 1
SYMBOL res -120 -96 M90
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL cap -24 -64 R0
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL cap 136 -144 R90
SYMATTR InstName C7
SYMATTR Value .015
SYMBOL cap 232 -144 R90
SYMATTR InstName C8
SYMATTR Value .015
SYMBOL res 152 -48 R90
SYMATTR InstName R8
SYMATTR Value 169K
SYMBOL res 264 -48 R90
SYMATTR InstName R9
SYMATTR Value 169K
SYMBOL cap 136 16 R0
SYMATTR InstName C9
SYMATTR Value .03
SYMBOL res 440 -208 R90
SYMATTR InstName R10
SYMATTR Value 80.6K
SYMBOL res 280 -80 R0
SYMATTR InstName R11
SYMATTR Value 169K
SYMBOL cap 376 -64 R0
SYMATTR InstName C10
SYMATTR Value .1
SYMBOL res 616 128 R90
SYMATTR InstName R12
SYMATTR Value 200K
SYMBOL res 456 128 R90
SYMATTR InstName R13
SYMATTR Value 100K
SYMBOL cap 616 16 R90
SYMATTR InstName C11
SYMATTR Value .01
SYMBOL res 744 -48 M270
SYMATTR InstName R14
SYMATTR Value 10K
SYMBOL cap 744 32 M180
SYMATTR InstName C12
SYMATTR Value .1
SYMBOL opamps\\LT1495 -232 -16 M180
SYMATTR InstName U1
SYMBOL opamps\\LT1495 520 0 M180
SYMATTR InstName U2