Version 4 SHEET 1 4212 952 WIRE 1184 96 960 96 WIRE 960 112 960 96 WIRE 2336 144 2128 144 WIRE 2336 160 2336 144 WIRE 1184 176 1184 96 WIRE 2128 192 2128 144 WIRE 960 208 960 192 WIRE 1424 240 1360 240 WIRE 1488 240 1424 240 WIRE 1632 240 1568 240 WIRE 1696 240 1632 240 WIRE 1840 240 1776 240 WIRE 1952 240 1840 240 WIRE 1056 256 576 256 WIRE 2336 256 2336 240 WIRE 576 272 576 256 WIRE 2592 272 2256 272 WIRE 1360 288 1360 240 WIRE 1360 288 1312 288 WIRE 1424 288 1424 240 WIRE 1632 288 1632 240 WIRE 1840 288 1840 240 WIRE 2592 288 2592 272 WIRE 1056 304 992 304 WIRE 1952 304 1952 240 WIRE 2000 304 1952 304 WIRE 2432 320 2256 320 WIRE 992 336 992 304 WIRE 992 336 736 336 WIRE 1056 336 992 336 WIRE 576 352 576 336 WIRE 1360 352 1312 352 WIRE 2432 352 2432 320 WIRE 2432 352 2256 352 WIRE 2000 368 1952 368 WIRE 2592 384 2592 352 WIRE 1056 400 832 400 WIRE 1360 400 1360 352 WIRE 1424 400 1424 352 WIRE 1424 400 1360 400 WIRE 1488 400 1424 400 WIRE 1632 400 1632 352 WIRE 1632 400 1568 400 WIRE 1712 400 1632 400 WIRE 1840 400 1840 352 WIRE 1840 400 1792 400 WIRE 1952 400 1952 368 WIRE 1952 400 1840 400 WIRE 2336 416 2256 416 WIRE 2432 416 2432 352 WIRE 832 496 832 400 WIRE 1184 528 1184 496 WIRE 2336 528 2336 416 WIRE 2432 528 2432 496 WIRE 1616 560 1600 560 WIRE 1728 560 1696 560 WIRE 2128 560 2128 512 WIRE 832 592 832 576 WIRE 736 608 736 336 WIRE 2336 640 2336 608 WIRE 736 720 736 688 FLAG 1184 528 0 FLAG 960 208 0 FLAG 576 352 0 FLAG 832 592 0 FLAG 2336 256 COM FLAG 2592 384 COM FLAG 2128 560 COM FLAG 1600 560 0 FLAG 736 720 0 FLAG 1728 560 COM FLAG 2432 528 COM FLAG 2336 640 COM SYMBOL voltage 960 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 3.3 SYMBOL cap 560 272 R0 WINDOW 123 22 64 Left 2 WINDOW 3 44 34 Left 2 SYMATTR Value2 Rpar=1Meg SYMATTR Value 5p SYMATTR InstName C1 SYMBOL voltage 2336 144 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 3 26 95 Left 2 SYMATTR InstName V3 SYMATTR Value 3.3 SYMBOL voltage 1712 560 R90 WINDOW 123 74 56 VTop 2 WINDOW 39 53 56 VTop 2 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName V5 SYMATTR Value SINE(0 20 10K) SYMBOL ind 1584 224 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 53 56 VTop 2 SYMATTR InstName L1 SYMATTR Value 50n SYMATTR Value2 Rser=10 SYMBOL cap 1408 288 R0 SYMATTR InstName C4 SYMATTR Value 100p SYMBOL cap 1616 288 R0 SYMATTR InstName C3 SYMATTR Value 100p SYMBOL cap 1824 288 R0 SYMATTR InstName C5 SYMATTR Value 100p SYMBOL ind 1792 224 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 53 56 VTop 2 SYMATTR InstName L2 SYMATTR Value 50n SYMATTR Value2 Rser=10 SYMBOL ind 1584 416 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 WINDOW 123 -16 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value 50n SYMATTR Value2 Rser=10 SYMBOL ind 1808 416 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 WINDOW 123 -16 56 VBottom 2 SYMATTR InstName L4 SYMATTR Value 50n SYMATTR Value2 Rser=10 SYMBOL cap 2576 288 R0 WINDOW 123 22 65 Left 2 WINDOW 3 41 35 Left 2 SYMATTR Value2 Rpar=1Meg SYMATTR Value 5p SYMATTR InstName C2 SYMBOL LTC2862-2 1184 336 R0 SYMATTR InstName U1 SYMBOL LTC2862-2 2128 352 M0 SYMATTR InstName U2 SYMBOL voltage 736 592 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PWL(0 0 10n 3.3 40u 3.3 +10n 0) SYMBOL voltage 832 480 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V4 SYMATTR Value PULSE(0 3.3 1u 4n 4n 2u 4u 10) SYMBOL voltage 2336 512 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V6 SYMATTR Value PULSE(0 3.3 50u 4n 4n 2u 4u 10) SYMBOL voltage 2432 400 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V7 SYMATTR Value PWL(0 0 40u 0 +10n 3.3) TEXT 1576 184 Left 2 ;Twisted pair TEXT 1656 136 Bottom 2 ;Forward transmission from DIF to ROF followed by\nreverse transmission from DIR to ROR TEXT 2440 704 Left 2 !.tran 100u RECTANGLE Normal 1920 480 1392 160 2