* SPICE netlist
V1 N012 0 5
V2 0 N011 5
R3 N006 IN 26.1K
R1 N003 N006 4.99K
R2 N008 N006 19.6K
R4 N001 N006 12.1K
R5 N002 N007 4.99K
R6 N002 N004 21.5K
R7 N002 N001 63.4K
R8 N002 N003 7.5K
R9 N005 N004 16.2K
R10 N014 N005 10.7K
R11 N016 N005 14.7K
R12 N018 N005 4.99K
R13 OUT N017 28.7K
R14 N019 N017 4.99K
R15 N018 N017 40.2K
R16 N014 N017 14.7K
R17 N013 N015 4.99K
R18 N009 N010 4.99K
R19 N010 0 7.5K
R20 N013 0 17.8K
V3 IN 0 AC 1
XU1 N006 N003 N008 N001 0 0 N012 0 N014 N016 N018 N005 N017 N019 OUT N015 N013 N011 N010 N009 N004 N007 N002 LTC1068 Fclk=1.28Meg ;pnba INV B)HPB/NB)BPB)LPB)SB)AGND)V+)SA)LPA)BPA)HPA/NA)INV A)INV D)HPD/ND)BPD)LPD)SD)V-)SC)LPC)BPC)HPC/NC)INV C
.ac oct 500 1K 100K

* LTspice schematic (.asc)
Version 4
SHEET 1 1152 1184
WIRE -80 -576 -208 -576
WIRE 240 -576 0 -576
WIRE 64 -528 -176 -528
WIRE 240 -528 240 -576
WIRE 240 -528 144 -528
WIRE 304 -496 272 -496
WIRE 496 -496 384 -496
WIRE -144 -416 -400 -416
WIRE 240 -416 240 -528
WIRE 240 -416 208 -416
WIRE 448 -416 240 -416
WIRE -512 -352 -576 -352
WIRE -400 -352 -400 -416
WIRE -400 -352 -432 -352
WIRE -384 -352 -400 -352
WIRE -176 -352 -176 -528
WIRE -176 -352 -304 -352
WIRE -144 -352 -176 -352
WIRE 288 -352 208 -352
WIRE 448 -352 448 -416
WIRE 448 -352 368 -352
WIRE -576 -336 -576 -352
WIRE -400 -288 -400 -352
WIRE -304 -288 -400 -288
WIRE -144 -288 -224 -288
WIRE 272 -288 272 -496
WIRE 272 -288 208 -288
WIRE 352 -288 272 -288
WIRE 448 -288 448 -352
WIRE 448 -288 432 -288
WIRE -576 -240 -576 -256
WIRE -400 -224 -400 -288
WIRE -368 -224 -400 -224
WIRE -208 -224 -208 -576
WIRE -208 -224 -288 -224
WIRE -144 -224 -208 -224
WIRE 240 -224 208 -224
WIRE 352 -224 320 -224
WIRE -144 -160 -176 -160
WIRE 352 -160 352 -224
WIRE 352 -160 208 -160
WIRE 368 -160 352 -160
WIRE 464 -160 448 -160
WIRE 240 -96 208 -96
WIRE 336 -96 320 -96
WIRE -144 -32 -176 -32
WIRE -288 32 -320 32
WIRE -144 32 -208 32
WIRE -144 160 -176 160
WIRE 320 160 208 160
WIRE 336 160 320 160
WIRE 432 160 416 160
WIRE -384 224 -400 224
WIRE -208 224 -304 224
WIRE -144 224 -208 224
WIRE 224 224 208 224
WIRE 320 224 320 160
WIRE 320 224 304 224
WIRE 576 240 320 240
WIRE -400 288 -400 224
WIRE -304 288 -400 288
WIRE -144 288 -224 288
WIRE 320 288 320 240
WIRE 320 288 208 288
WIRE 336 288 320 288
WIRE 448 288 416 288
WIRE -400 352 -400 288
WIRE -368 352 -400 352
WIRE -160 352 -288 352
WIRE -144 352 -160 352
WIRE 256 352 208 352
WIRE 448 352 448 288
WIRE 448 352 336 352
WIRE -400 416 -400 352
WIRE -144 416 -400 416
WIRE 448 416 448 352
WIRE 448 416 208 416
WIRE -160 496 -160 352
WIRE 256 496 -160 496
WIRE 448 496 448 416
WIRE 448 496 336 496
WIRE -208 544 -208 224
WIRE -128 544 -208 544
WIRE 448 544 448 496
WIRE 448 544 -48 544
WIRE -400 592 -400 416
WIRE 496 592 496 -496
WIRE 496 592 -400 592
FLAG -320 32 0
FLAG 336 -96 0
FLAG -576 -240 0
FLAG -576 -352 IN
FLAG -176 -32 0
FLAG -176 -160 0
FLAG -176 160 0
FLAG 576 240 OUT
FLAG 464 -160 0
FLAG 432 160 0
SYMBOL voltage -192 32 R90
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 336 -96 R90
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res -416 -368 R90
SYMATTR InstName R3
SYMATTR Value 26.1K
SYMBOL res -288 -368 R90
SYMATTR InstName R1
SYMATTR Value 4.99K
SYMBOL res -208 -304 R90
SYMATTR InstName R2
SYMATTR Value 19.6K
SYMBOL res -272 -240 R90
SYMATTR InstName R4
SYMATTR Value 12.1K
SYMBOL res 384 -368 R90
SYMATTR InstName R5
SYMATTR Value 4.99K
SYMBOL res 448 -304 R90
SYMATTR InstName R6
SYMATTR Value 21.5K
SYMBOL res 16 -592 R90
SYMATTR InstName R7
SYMATTR Value 63.4K
SYMBOL res 160 -544 R90
SYMATTR InstName R8
SYMATTR Value 7.5K
SYMBOL res 400 -512 R90
SYMATTR InstName R9
SYMATTR Value 16.2K
SYMBOL res -288 208 R90
SYMATTR InstName R10
SYMATTR Value 10.7K
SYMBOL res -208 272 R90
SYMATTR InstName R11
SYMATTR Value 14.7K
SYMBOL res -272 336 R90
SYMATTR InstName R12
SYMATTR Value 4.99K
SYMBOL res 320 272 M90
SYMATTR InstName R13
SYMATTR Value 28.7K
SYMBOL res 240 336 M90
SYMATTR InstName R14
SYMATTR Value 4.99K
SYMBOL res 240 480 M90
SYMATTR InstName R15
SYMATTR Value 40.2K
SYMBOL res -144 560 R270
SYMATTR InstName R16
SYMATTR Value 14.7K
SYMBOL res 320 208 R90
SYMATTR InstName R17
SYMATTR Value 4.99K
SYMBOL res 224 -208 R270
SYMATTR InstName R18
SYMATTR Value 4.99K
SYMBOL res 352 -176 M90
SYMATTR InstName R19
SYMATTR Value 7.5K
SYMBOL res 320 144 M90
SYMATTR InstName R20
SYMATTR Value 17.8K
SYMBOL voltage -576 -352 R0
SYMATTR InstName V3
SYMATTR Value AC 1
SYMBOL FilterProducts\\LTC1068 32 -160 R0
SYMATTR InstName U1
SYMATTR Value Fclk=1.28Meg