* SPICE netlist
V2 N007 0 SINE(1.6 1 2000 0) AC 1
S1 N003 N004 N008 0 MySwitch
S2 N010 N004 N012 0 MySwitch
S3 N014 N004 N015 0 MySwitch
S4 N018 N004 N019 0 MySwitch
V5 N012 0 PULSE(-1 1 72n 2n 2n 34n 144n)
V6 N015 0 PULSE(-1 1 36n 2n 2n 34n 144n)
V7 N019 0 PULSE(-1 1 108n 2n 2n 34n 144n)
V1 N008 0 PULSE(-1 1 0 2n 2n 34n 144n)
R5 N007 SIG0 1k
V4 N011 0 SINE(1.6 1 2000 250u) AC 1
R1 N011 SIG180 1k
V8 N017 0 SINE(1.6 1 2000 125u) AC 1
R2 N017 SIG90 1k
V9 N020 0 SINE(1.6 1 2000 375u) AC 1
R3 N020 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 N009 N001 0 N009 AD8602 ;pnba In+)In-)V+)V-)OUT
XU3 SIG90 N013 N001 0 N013 AD8602 ;pnba In+)In-)V+)V-)OUT
XU4 SIG270 N016 N001 0 N016 AD8602 ;pnba In+)In-)V+)V-)OUT
R6 0 TP_OUT 50
C11 TP_OUT N006 100n
C12 N005 0 130p
C13 N006 0 130p
L4 N005 N006 300n
R4 N002 N003 100
C6 N003 0 100n
R8 N009 N010 100
C7 N010 0 100n
R9 N013 N014 100
C8 N014 0 100n
R10 N016 N018 100
C9 N018 0 100n
R7 N004 N005 50
.tran 2m
;ac oct 100 1Meg 100Meg

* LTspice schematic (.asc)
Version 4
SHEET 1 1808 1328
WIRE -328 -664 -488 -664
WIRE -488 -616 -488 -664
WIRE -488 -520 -488 -536
WIRE -328 -440 -328 -664
WIRE -328 -440 -392 -440
WIRE -248 -408 -376 -408
WIRE -328 -376 -328 -440
WIRE -376 -360 -376 -408
WIRE -360 -360 -376 -360
WIRE -248 -344 -248 -408
WIRE -248 -344 -296 -344
WIRE -232 -344 -248 -344
WIRE -136 -344 -152 -344
WIRE 104 -344 -136 -344
WIRE 264 -344 184 -344
WIRE 296 -344 264 -344
WIRE 456 -344 376 -344
WIRE 520 -344 456 -344
WIRE 664 -344 600 -344
WIRE 744 -344 664 -344
WIRE 856 -344 808 -344
WIRE 888 -344 856 -344
WIRE -856 -328 -904 -328
WIRE -696 -328 -776 -328
WIRE -536 -328 -696 -328
WIRE -360 -328 -536 -328
WIRE -136 -328 -136 -344
WIRE -536 -312 -536 -328
WIRE -904 -296 -904 -328
WIRE -328 -296 -328 -312
WIRE 456 -296 456 -344
WIRE 664 -296 664 -344
WIRE 888 -296 888 -344
WIRE -136 -248 -136 -264
WIRE 120 -248 120 -296
WIRE -536 -232 -536 -248
WIRE -392 -232 -392 -440
WIRE -328 -232 -392 -232
WIRE -56 -216 -104 -216
WIRE 168 -216 168 -296
WIRE 168 -216 24 -216
WIRE -904 -200 -904 -216
WIRE -248 -200 -376 -200
WIRE -328 -168 -328 -232
WIRE 456 -168 456 -232
WIRE 664 -168 664 -232
WIRE -376 -152 -376 -200
WIRE -360 -152 -376 -152
WIRE 888 -152 888 -216
WIRE -248 -136 -248 -200
WIRE -248 -136 -296 -136
WIRE -232 -136 -248 -136
WIRE -136 -136 -152 -136
WIRE 104 -136 -136 -136
WIRE 264 -136 264 -344
WIRE 264 -136 184 -136
WIRE -536 -120 -616 -120
WIRE -360 -120 -536 -120
WIRE -136 -120 -136 -136
WIRE -536 -104 -536 -120
WIRE -328 -88 -328 -104
WIRE -856 -56 -904 -56
WIRE -696 -56 -776 -56
WIRE -616 -56 -616 -120
WIRE -616 -56 -696 -56
WIRE 120 -56 120 -88
WIRE -392 -40 -392 -232
WIRE -328 -40 -392 -40
WIRE -136 -40 -136 -56
WIRE -536 -24 -536 -40
WIRE -56 -24 -104 -24
WIRE 168 -24 168 -88
WIRE 168 -24 24 -24
WIRE -248 -8 -376 -8
WIRE -904 8 -904 -56
WIRE -328 24 -328 -40
WIRE -376 40 -376 -8
WIRE -360 40 -376 40
WIRE -248 56 -248 -8
WIRE -248 56 -296 56
WIRE -232 56 -248 56
WIRE -136 56 -152 56
WIRE 104 56 -136 56
WIRE 264 56 264 -136
WIRE 264 56 184 56
WIRE -536 72 -616 72
WIRE -360 72 -536 72
WIRE -136 72 -136 56
WIRE -536 88 -536 72
WIRE -328 104 -328 88
WIRE -904 120 -904 88
WIRE 120 136 120 104
WIRE -392 152 -392 -40
WIRE -328 152 -392 152
WIRE -136 152 -136 136
WIRE -536 168 -536 152
WIRE -56 168 -104 168
WIRE 168 168 168 104
WIRE 168 168 24 168
WIRE -248 184 -376 184
WIRE -856 216 -904 216
WIRE -696 216 -776 216
WIRE -616 216 -616 72
WIRE -616 216 -696 216
WIRE -328 216 -328 152
WIRE -376 232 -376 184
WIRE -360 232 -376 232
WIRE -248 248 -248 184
WIRE -248 248 -296 248
WIRE -232 248 -248 248
WIRE -136 248 -152 248
WIRE 104 248 -136 248
WIRE 264 248 264 56
WIRE 264 248 184 248
WIRE -536 264 -616 264
WIRE -360 264 -536 264
WIRE -136 264 -136 248
WIRE -904 280 -904 216
WIRE -536 280 -536 264
WIRE -328 296 -328 280
WIRE 120 328 120 296
WIRE -136 344 -136 328
WIRE -536 360 -536 344
WIRE -56 360 -104 360
WIRE 168 360 168 296
WIRE 168 360 24 360
WIRE -904 392 -904 360
WIRE -856 488 -904 488
WIRE -696 488 -776 488
WIRE -616 488 -616 264
WIRE -616 488 -696 488
WIRE -904 552 -904 488
WIRE -904 664 -904 632
FLAG -904 -200 0
FLAG 120 -248 0
FLAG -104 -24 0
FLAG -104 168 0
FLAG -104 360 0
FLAG 120 -56 0
FLAG 120 136 0
FLAG 120 328 0
FLAG -104 -216 0
FLAG -696 -328 SIG0
FLAG -904 120 0
FLAG -696 -56 SIG180
FLAG -904 392 0
FLAG -696 216 SIG90
FLAG -904 664 0
FLAG -696 488 SIG270
FLAG -536 -232 0
FLAG -536 -24 0
FLAG -536 168 0
FLAG -536 360 0
FLAG -488 -520 0
FLAG -328 -296 0
FLAG -328 -88 0
FLAG -328 104 0
FLAG -328 296 0
FLAG 888 -152 0
FLAG 856 -344 TP_OUT
FLAG 456 -168 0
FLAG 664 -168 0
FLAG -136 -248 0
FLAG -136 -40 0
FLAG -136 152 0
FLAG -136 344 0
SYMBOL voltage -904 -312 R0
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value SINE(1.6 1 2000 0)
SYMBOL sw 88 -344 R270
SYMATTR InstName S1
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL sw 88 -136 R270
SYMATTR InstName S2
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL sw 88 56 R270
SYMATTR InstName S3
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL sw 88 248 R270
SYMATTR InstName S4
SYMATTR Value ""
SYMATTR InstName MySwitch
SYMBOL voltage 40 -24 R90
SYMATTR InstName V5
SYMATTR Value PULSE(-1 1 72n 2n 2n 34n 144n)
SYMBOL voltage 40 168 R90
SYMATTR InstName V6
SYMATTR Value PULSE(-1 1 36n 2n 2n 34n 144n)
SYMBOL voltage 40 360 R90
SYMATTR InstName V7
SYMATTR Value PULSE(-1 1 108n 2n 2n 34n 144n)
SYMBOL voltage 40 -216 R90
SYMATTR InstName V1
SYMATTR Value PULSE(-1 1 0 2n 2n 34n 144n)
SYMBOL res -872 -312 R270
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL voltage -904 -8 R0
SYMATTR Value2 AC 1
SYMATTR InstName V4
SYMATTR Value SINE(1.6 1 2000 250u)
SYMBOL res -872 -40 R270
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL voltage -904 264 R0
SYMATTR Value2 AC 1
SYMATTR InstName V8
SYMATTR Value SINE(1.6 1 2000 125u)
SYMBOL res -872 232 R270
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL voltage -904 536 R0
SYMATTR Value2 AC 1
SYMATTR InstName V9
SYMATTR Value SINE(1.6 1 2000 375u)
SYMBOL res -872 504 R270
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL cap -552 -312 R0
SYMATTR InstName C1
SYMATTR Value 47n
SYMBOL cap -552 -104 R0
SYMATTR InstName C2
SYMATTR Value 47n
SYMBOL cap -552 88 R0
SYMATTR InstName C3
SYMATTR Value 47n
SYMBOL cap -552 280 R0
SYMATTR InstName C4
SYMATTR Value 47n
SYMBOL Opamps\\AD8602 -328 -408 R0
SYMATTR InstName U1
SYMBOL voltage -488 -632 R0
SYMATTR InstName V10
SYMATTR Value 5
SYMBOL Opamps\\AD8602 -328 -200 R0
SYMATTR InstName U2
SYMBOL Opamps\\AD8602 -328 -8 R0
SYMATTR InstName U3
SYMBOL Opamps\\AD8602 -328 184 R0
SYMATTR InstName U4
SYMBOL res 904 -200 R180
SYMATTR InstName R6
SYMATTR Value 50
SYMBOL cap 808 -360 R90
SYMATTR InstName C11
SYMATTR Value 100n
SYMBOL cap 440 -296 R0
SYMATTR InstName C12
SYMATTR Value 130p
SYMBOL cap 648 -296 R0
SYMATTR InstName C13
SYMATTR Value 130p
SYMBOL ind 504 -328 R270
SYMATTR InstName L4
SYMATTR Value 300n
SYMBOL res -248 -328 R270
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL cap -152 -328 R0
SYMATTR InstName C6
SYMATTR Value 100n
SYMBOL res -248 -120 R270
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL cap -152 -120 R0
SYMATTR InstName C7
SYMATTR Value 100n
SYMBOL res -248 72 R270
SYMATTR InstName R9
SYMATTR Value 100
SYMBOL cap -152 72 R0
SYMATTR InstName C8
SYMATTR Value 100n
SYMBOL res -248 264 R270
SYMATTR InstName R10
SYMATTR Value 100
SYMBOL cap -152 264 R0
SYMATTR InstName C9
SYMATTR Value 100n
SYMBOL res 280 -328 R270
SYMATTR InstName R7
SYMATTR Value 50