Version 4
SHEET 1 1444 680
WIRE 48 32 48 0
WIRE 48 144 48 112
WIRE 64 0 48 0
WIRE 64 144 48 144
WIRE 112 272 112 208
WIRE 112 384 112 352
WIRE 160 144 144 144
WIRE 160 144 160 32
WIRE 160 272 160 256
WIRE 160 384 112 384
WIRE 160 384 160 352
WIRE 192 -144 192 -176
WIRE 192 32 160 32
WIRE 192 32 192 -64
WIRE 192 48 192 32
WIRE 192 144 192 128
WIRE 192 480 192 304
WIRE 208 304 192 304
WIRE 224 384 160 384
WIRE 224 384 224 336
WIRE 240 -144 240 -160
WIRE 240 -32 240 -64
WIRE 240 0 144 0
WIRE 240 0 240 -32
WIRE 240 48 240 0
WIRE 240 144 240 128
WIRE 240 256 160 256
WIRE 240 272 240 256
WIRE 256 368 256 336
WIRE 272 -32 240 -32
WIRE 272 -32 272 -64
WIRE 272 0 240 0
WIRE 272 32 192 32
WIRE 288 304 272 304
WIRE 304 -16 304 -32
WIRE 304 144 304 48
WIRE 352 -64 336 -64
WIRE 352 16 336 16
WIRE 352 16 352 -64
WIRE 352 208 112 208
WIRE 352 208 352 16
WIRE 352 256 240 256
WIRE 352 272 352 256
WIRE 352 368 256 368
WIRE 352 368 352 352
WIRE 352 400 352 368
WIRE 352 480 352 464
WIRE 368 -32 304 -32
WIRE 448 128 448 0
WIRE 448 256 352 256
WIRE 448 256 448 224
WIRE 480 128 480 16
WIRE 480 384 224 384
WIRE 480 384 480 224
WIRE 528 144 528 128
WIRE 528 240 528 224
WIRE 560 16 480 16
WIRE 560 96 560 16
WIRE 560 128 528 128
WIRE 560 128 560 96
WIRE 560 384 560 128
WIRE 576 0 448 0
WIRE 576 144 576 0
WIRE 576 240 528 240
WIRE 576 240 576 144
WIRE 576 336 576 240
WIRE 592 96 560 96
WIRE 592 144 576 144
WIRE 592 336 576 336
WIRE 592 384 560 384
WIRE 640 80 640 32
WIRE 640 256 640 160
WIRE 640 320 640 256
WIRE 640 464 640 400
WIRE 656 256 640 256
WIRE 752 32 640 32
WIRE 752 64 752 32
WIRE 752 192 752 128
WIRE 752 256 736 256
WIRE 752 256 752 192
WIRE 752 352 752 256
WIRE 752 464 640 464
WIRE 752 464 752 416
WIRE 768 256 752 256
WIRE 800 -160 240 -160
WIRE 800 192 752 192
WIRE 800 192 800 -160
WIRE 816 -176 192 -176
WIRE 816 192 816 -176
WIRE 864 32 752 32
WIRE 864 64 864 32
WIRE 864 192 816 192
WIRE 864 192 864 128
WIRE 864 256 848 256
WIRE 864 256 864 192
WIRE 864 352 864 256
WIRE 864 464 752 464
WIRE 864 464 864 416
WIRE 880 256 864 256
WIRE 976 32 864 32
WIRE 976 80 976 32
WIRE 976 256 960 256
WIRE 976 256 976 160
WIRE 976 320 976 256
WIRE 976 464 864 464
WIRE 976 464 976 400
WIRE 1040 16 560 16
WIRE 1040 144 1024 144
WIRE 1040 144 1040 16
WIRE 1040 336 1024 336
WIRE 1040 336 1040 144
WIRE 1056 0 576 0
WIRE 1056 96 1024 96
WIRE 1056 96 1056 0
WIRE 1056 384 1024 384
WIRE 1056 384 1056 96
WIRE 1136 32 976 32
WIRE 1136 80 1136 32
WIRE 1136 256 1136 160
WIRE 1136 320 1136 256
WIRE 1136 464 976 464
WIRE 1136 464 1136 400
WIRE 1136 480 1136 464
WIRE 1168 256 1136 256
WIRE 1168 256 1168 224
FLAG 1136 480 0
FLAG 352 480 0
FLAG 192 480 0
FLAG 304 144 0
FLAG 192 144 0
FLAG 240 144 0
FLAG 1168 224 +30
FLAG 368 -32 +30
FLAG 288 304 +30
SYMBOL tline 464 176 R90
WINDOW 0 2 12 VLeft 0
WINDOW 3 -260 -118 VLeft 0
SYMATTR InstName T1
SYMATTR Value Z0=1G Td=90n
SYMBOL ind 640 272 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 20µ
SYMBOL ind 864 272 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L2
SYMATTR Value 20µ
SYMBOL Misc\\EuropeanResistor 864 272 M270
WINDOW 0 1 56 VTop 0
WINDOW 3 62 59 VBottom 0
SYMATTR InstName R3
SYMATTR Value 4
SYMBOL cap 736 64 R0
WINDOW 3 32 48 VRight 0
SYMATTR Value 220n
SYMATTR InstName C2
SYMBOL cap 880 64 M0
WINDOW 3 35 96 VLeft 0
SYMATTR Value 220n
SYMATTR InstName C3
SYMBOL cap 736 352 R0
WINDOW 0 24 12 Left 0
WINDOW 3 31 49 VRight 0
SYMATTR InstName C4
SYMATTR Value 220n
SYMBOL cap 880 352 M0
WINDOW 3 32 95 VLeft 0
SYMATTR Value 220n
SYMATTR InstName C5
SYMBOL Misc\\EuropeanResistor 544 240 R180
WINDOW 0 16 46 VRight 0
WINDOW 3 -3 131 Left 0
SYMATTR InstName R4
SYMATTR Value 1G
SYMBOL voltage 1136 64 M0
WINDOW 0 -11 57 Left 0
WINDOW 3 -44 20 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 30
SYMBOL voltage 1136 304 M0
WINDOW 0 -14 57 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -31 7 Left 0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL cap 368 400 M0
WINDOW 0 37 31 Left 0
WINDOW 3 24 57 Left 0
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor 96 256 R0
WINDOW 0 14 71 VLeft 0
WINDOW 3 -33 20 Left 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 144 256 R0
WINDOW 0 17 71 VLeft 0
WINDOW 3 5 -21 Left 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 336 256 R0
WINDOW 0 16 68 VLeft 0
WINDOW 3 32 28 Left 0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 224 32 R0
WINDOW 0 17 41 VRight 0
WINDOW 3 21 145 Left 0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 176 -160 R0
WINDOW 0 16 42 VRight 0
WINDOW 3 -24 8 Left 0
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 224 -160 R0
WINDOW 0 15 36 VRight 0
WINDOW 3 34 25 Left 0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 48 128 M90
WINDOW 0 29 51 VBottom 0
WINDOW 3 -19 56 VTop 0
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL voltage 48 16 M0
WINDOW 0 -14 58 Left 0
WINDOW 3 -119 -100 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value SINE(0 1 1k)
SYMBOL Misc\\EuropeanResistor 176 32 R0
WINDOW 0 17 37 VRight 0
WINDOW 3 -13 145 Left 0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL sw 640 304 R0
WINDOW 0 -26 55 Left 0
SYMATTR InstName S2
SYMATTR Value Sa
SYMBOL sw 640 64 R0
WINDOW 0 -21 54 Left 0
SYMATTR InstName S1
SYMATTR Value Da
SYMBOL sw 976 64 M0
WINDOW 0 -24 54 Left 0
SYMATTR InstName S3
SYMATTR Value Db
SYMBOL sw 976 304 M0
WINDOW 0 -24 55 Left 0
SYMATTR InstName S4
SYMATTR Value Sb
SYMBOL Opamps\\LT1362 304 -48 R0
WINDOW 0 -23 65 Left 0
WINDOW 3 25 92 VRight 0
SYMATTR InstName U1
SYMBOL Opamps\\LT1362 304 304 M270
WINDOW 0 -5 48 VRight 0
WINDOW 3 69 -2 VRight 0
SYMATTR InstName U2
SYMBOL cap 272 -48 R270
WINDOW 0 20 8 VTop 0
WINDOW 3 44 65 VBottom 0
SYMATTR InstName C7
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor 48 16 R270
WINDOW 0 2 56 VTop 0
WINDOW 3 55 58 VBottom 0
SYMATTR InstName R6
SYMATTR Value 1k
TEXT 824 -112 Left 0 !.model Da SW(Ron=0.3)\n.model Sa SW(Ron=0.3)\n.model Db SW(Ron=0.3)\n.model Sb SW(Ron=0.3)
TEXT 1016 -168 Left 0 !.tran 1.2m uic
TEXT 432 -104 Left 0 ;TDA
TEXT 1000 -144 Left 0 !.four 1kHz I(R3)
RECTANGLE Normal 416 480 1088 -128 2