* SPICE netlist
V2 N008 0 SINE(3 1 2000 0) AC 1
S1 N003 N004 N009 0 MySwitch
S2 N011 N004 N013 0 MySwitch
S3 N015 N004 N016 0 MySwitch
S4 N019 N004 N020 0 MySwitch
V5 N013 0 PULSE(-1 1 36n 2n 2n 17n 72n)
V6 N016 0 PULSE(-1 1 18n 2n 2n 17n 72n)
V7 N020 0 PULSE(-1 1 54n 2n 2n 17n 72n)
V1 N009 0 PULSE(-1 1 0 2n 2n 17n 72n)
R5 N008 SIG0 1k
V4 N012 0 SINE(3 1 2000 250u) AC 1
R1 N012 SIG180 1k
V8 N018 0 SINE(3 1 2000 125u) AC 1
R2 N018 SIG90 1k
V9 N021 0 SINE(3 1 2000 375u) AC 1
R3 N021 SIG270 1k
C1 SIG0 0 47n
C2 SIG180 0 47n
C3 SIG90 0 47n
C4 SIG270 0 47n
XU1 SIG0 N002 N001 0 N002 AD8602 ;pnba In+)In-)V+)V-)OUT
V10 N001 0 5
XU2 SIG180 N010 N001 0 N010 AD8602 ;pnba In+)In-)V+)V-)OUT
XU3 SIG90 N014 N001 0 N014 AD8602 ;pnba In+)In-)V+)V-)OUT
XU4 SIG270 N017 N001 0 N017 AD8602 ;pnba In+)In-)V+)V-)OUT
R6 0 TP_OUT 50
C11 TP_OUT N007 1n
R4 N002 N003 100
C6 N003 0 100n
R8 N010 N011 100
C7 N011 0 100n
R9 N014 N015 100
C8 N015 0 100n
R10 N017 N019 100
C9 N019 0 100n
R7 N004 N005 50
C5 N006 0 470p
C10 N007 0 270p
L1 N006 N007 680n
C13 N005 0 270p
L3 N005 N006 680n
.tran 0 2m 0 1n
;ac oct 100 1Meg 100Meg

* LTspice schematic (.asc)
Version 4
SHEET 1 2000 1328
WIRE -424 -664 -584 -664
WIRE -584 -616 -584 -664
WIRE -584 -520 -584 -536
WIRE -424 -440 -424 -664
WIRE -424 -440 -488 -440
WIRE -344 -408 -472 -408
WIRE -424 -376 -424 -440
WIRE -472 -360 -472 -408
WIRE -456 -360 -472 -360
WIRE -344 -344 -344 -408
WIRE -344 -344 -392 -344
WIRE -328 -344 -344 -344
WIRE -232 -344 -248 -344
WIRE 8 -344 -232 -344
WIRE 168 -344 88 -344
WIRE 200 -344 168 -344
WIRE 360 -344 280 -344
WIRE 424 -344 360 -344
WIRE 552 -344 504 -344
WIRE 616 -344 552 -344
WIRE 760 -344 696 -344
WIRE 840 -344 760 -344
WIRE 952 -344 904 -344
WIRE 984 -344 952 -344
WIRE -952 -328 -1000 -328
WIRE -792 -328 -872 -328
WIRE -632 -328 -792 -328
WIRE -456 -328 -632 -328
WIRE -232 -328 -232 -344
WIRE -632 -312 -632 -328
WIRE -1000 -296 -1000 -328
WIRE -424 -296 -424 -312
WIRE 360 -296 360 -344
WIRE 552 -296 552 -344
WIRE 760 -296 760 -344
WIRE 984 -296 984 -344
WIRE -232 -248 -232 -264
WIRE 24 -248 24 -296
WIRE -632 -232 -632 -248
WIRE -488 -232 -488 -440
WIRE -424 -232 -488 -232
WIRE -152 -216 -200 -216
WIRE 72 -216 72 -296
WIRE 72 -216 -72 -216
WIRE -1000 -200 -1000 -216
WIRE -344 -200 -472 -200
WIRE -424 -168 -424 -232
WIRE 360 -168 360 -232
WIRE 552 -168 552 -232
WIRE 760 -168 760 -232
WIRE -472 -152 -472 -200
WIRE -456 -152 -472 -152
WIRE 984 -152 984 -216
WIRE -344 -136 -344 -200
WIRE -344 -136 -392 -136
WIRE -328 -136 -344 -136
WIRE -232 -136 -248 -136
WIRE 8 -136 -232 -136
WIRE 168 -136 168 -344
WIRE 168 -136 88 -136
WIRE -632 -120 -712 -120
WIRE -456 -120 -632 -120
WIRE -232 -120 -232 -136
WIRE -632 -104 -632 -120
WIRE -424 -88 -424 -104
WIRE -952 -56 -1000 -56
WIRE -792 -56 -872 -56
WIRE -712 -56 -712 -120
WIRE -712 -56 -792 -56
WIRE 24 -56 24 -88
WIRE -488 -40 -488 -232
WIRE -424 -40 -488 -40
WIRE -232 -40 -232 -56
WIRE -632 -24 -632 -40
WIRE -152 -24 -200 -24
WIRE 72 -24 72 -88
WIRE 72 -24 -72 -24
WIRE -344 -8 -472 -8
WIRE -1000 8 -1000 -56
WIRE -424 24 -424 -40
WIRE -472 40 -472 -8
WIRE -456 40 -472 40
WIRE -344 56 -344 -8
WIRE -344 56 -392 56
WIRE -328 56 -344 56
WIRE -232 56 -248 56
WIRE 8 56 -232 56
WIRE 168 56 168 -136
WIRE 168 56 88 56
WIRE -632 72 -712 72
WIRE -456 72 -632 72
WIRE -232 72 -232 56
WIRE -632 88 -632 72
WIRE -424 104 -424 88
WIRE -1000 120 -1000 88
WIRE 24 136 24 104
WIRE -488 152 -488 -40
WIRE -424 152 -488 152
WIRE -232 152 -232 136
WIRE -632 168 -632 152
WIRE -152 168 -200 168
WIRE 72 168 72 104
WIRE 72 168 -72 168
WIRE -344 184 -472 184
WIRE -952 216 -1000 216
WIRE -792 216 -872 216
WIRE -712 216 -712 72
WIRE -712 216 -792 216
WIRE -424 216 -424 152
WIRE -472 232 -472 184
WIRE -456 232 -472 232
WIRE -344 248 -344 184
WIRE -344 248 -392 248
WIRE -328 248 -344 248
WIRE -232 248 -248 248
WIRE 8 248 -232 248
WIRE 168 248 168 56
WIRE 168 248 88 248
WIRE -632 264 -712 264
WIRE -456 264 -632 264
WIRE -232 264 -232 248
WIRE -1000 280 -1000 216
WIRE -632 280 -632 264
WIRE -424 296 -424 280
WIRE 24 328 24 296
WIRE -232 344 -232 328
WIRE -632 360 -632 344
WIRE -152 360 -200 360
WIRE 72 360 72 296
WIRE 72 360 -72 360
WIRE -1000 392 -1000 360
WIRE -952 488 -1000 488
WIRE -792 488 -872 488
WIRE -712 488 -712 264
WIRE -712 488 -792 488
WIRE -1000 552 -1000 488
WIRE -1000 664 -1000 632
FLAG -1000 -200 0
FLAG 24 -248 0
FLAG -200 -24 0
FLAG -200 168 0
FLAG -200 360 0
FLAG 24 -56 0
FLAG 24 136 0
FLAG 24 328 0
FLAG -200 -216 0
FLAG -792 -328 SIG0
FLAG -1000 120 0
FLAG -792 -56 SIG180
FLAG -1000 392 0
FLAG -792 216 SIG90
FLAG -1000 664 0
FLAG -792 488 SIG270
FLAG -632 -232 0
FLAG -632 -24 0
FLAG -632 168 0
FLAG -632 360 0
FLAG -584 -520 0
FLAG -424 -296 0
FLAG -424 -88 0
FLAG -424 104 0
FLAG -424 296 0
FLAG 984 -152 0
FLAG 952 -344 TP_OUT
FLAG -232 -248 0
FLAG -232 -40 0
FLAG -232 152 0
FLAG -232 344 0
FLAG 552 -168 0
FLAG 760 -168 0
FLAG 360 -168 0
SYMBOL voltage -1000 -312 R0
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value SINE(3 1 2000 0)
SYMBOL sw -8 -344 R270
SYMATTR InstName S1
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL sw -8 -136 R270
SYMATTR InstName S2
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL sw -8 56 R270
SYMATTR InstName S3
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL sw -8 248 R270
SYMATTR InstName S4
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL voltage -56 -24 R90
SYMATTR InstName V5
SYMATTR Value PULSE(-1 1 36n 2n 2n 17n 72n)
SYMBOL voltage -56 168 R90
SYMATTR InstName V6
SYMATTR Value PULSE(-1 1 18n 2n 2n 17n 72n)
SYMBOL voltage -56 360 R90
SYMATTR InstName V7
SYMATTR Value PULSE(-1 1 54n 2n 2n 17n 72n)
SYMBOL voltage -56 -216 R90
SYMATTR InstName V1
SYMATTR Value PULSE(-1 1 0 2n 2n 17n 72n)
SYMBOL res -968 -312 R270
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL voltage -1000 -8 R0
SYMATTR Value2 AC 1
SYMATTR InstName V4
SYMATTR Value SINE(3 1 2000 250u)
SYMBOL res -968 -40 R270
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL voltage -1000 264 R0
SYMATTR Value2 AC 1
SYMATTR InstName V8
SYMATTR Value SINE(3 1 2000 125u)
SYMBOL res -968 232 R270
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL voltage -1000 536 R0
SYMATTR Value2 AC 1
SYMATTR InstName V9
SYMATTR Value SINE(3 1 2000 375u)
SYMBOL res -968 504 R270
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL cap -648 -312 R0
SYMATTR InstName C1
SYMATTR Value 47n
SYMBOL cap -648 -104 R0
SYMATTR InstName C2
SYMATTR Value 47n
SYMBOL cap -648 88 R0
SYMATTR InstName C3
SYMATTR Value 47n
SYMBOL cap -648 280 R0
SYMATTR InstName C4
SYMATTR Value 47n
SYMBOL Opamps\\AD8602 -424 -408 R0
SYMATTR InstName U1
SYMBOL voltage -584 -632 R0
SYMATTR InstName V10
SYMATTR Value 5
SYMBOL Opamps\\AD8602 -424 -200 R0
SYMATTR InstName U2
SYMBOL Opamps\\AD8602 -424 -8 R0
SYMATTR InstName U3
SYMBOL Opamps\\AD8602 -424 184 R0
SYMATTR InstName U4
SYMBOL res 1000 -200 R180
SYMATTR InstName R6
SYMATTR Value 50
SYMBOL cap 904 -360 R90
SYMATTR InstName C11
SYMATTR Value 1n
SYMBOL res -344 -328 R270
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL cap -248 -328 R0
SYMATTR InstName C6
SYMATTR Value 100n
SYMBOL res -344 -120 R270
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL cap -248 -120 R0
SYMATTR InstName C7
SYMATTR Value 100n
SYMBOL res -344 72 R270
SYMATTR InstName R9
SYMATTR Value 100
SYMBOL cap -248 72 R0
SYMATTR InstName C8
SYMATTR Value 100n
SYMBOL res -344 264 R270
SYMATTR InstName R10
SYMATTR Value 100
SYMBOL cap -248 264 R0
SYMATTR InstName C9
SYMATTR Value 100n
SYMBOL res 184 -328 R270
SYMATTR InstName R7
SYMATTR Value 50
SYMBOL cap 536 -296 R0
SYMATTR InstName C5
SYMATTR Value 470p
SYMBOL cap 744 -296 R0
SYMATTR InstName C10
SYMATTR Value 270p
SYMBOL ind 600 -328 R270
SYMATTR InstName L1
SYMATTR Value 680n
SYMBOL cap 344 -296 R0
SYMATTR InstName C13
SYMATTR Value 270p
SYMBOL ind 408 -328 R270
SYMATTR InstName L3
SYMATTR Value 680n