Version 4
SHEET 1 1108 1220
WIRE 288 96 240 96
WIRE 688 96 688 80
WIRE -48 144 -48 112
WIRE -80 160 -112 160
WIRE 64 176 -16 176
WIRE 112 176 64 176
WIRE 144 176 112 176
WIRE 288 176 224 176
WIRE -400 192 -480 192
WIRE -320 192 -400 192
WIRE -192 192 -240 192
WIRE -80 192 -192 192
WIRE 688 192 688 176
WIRE -192 224 -192 192
WIRE -480 240 -480 192
WIRE -48 240 -48 208
WIRE 64 240 64 176
WIRE 288 256 256 256
WIRE 512 256 480 256
WIRE 944 256 800 256
WIRE 864 288 864 224
WIRE 800 304 800 256
WIRE 832 304 800 304
WIRE -192 320 -192 288
WIRE 944 320 944 256
WIRE 944 320 896 320
WIRE 992 320 944 320
WIRE 1024 320 992 320
WIRE -112 336 -112 160
WIRE 64 336 64 304
WIRE 64 336 -112 336
WIRE 160 336 64 336
WIRE 288 336 160 336
WIRE 560 336 480 336
WIRE 688 336 560 336
WIRE 752 336 688 336
WIRE 832 336 752 336
WIRE -480 352 -480 320
WIRE 64 368 64 336
WIRE 560 368 560 336
WIRE 688 384 688 336
WIRE 864 384 864 352
WIRE 64 480 64 448
WIRE 560 480 560 448
WIRE 688 480 688 448
WIRE -48 784 -48 752
WIRE -400 800 -480 800
WIRE -320 800 -400 800
WIRE -192 800 -240 800
WIRE -80 800 -192 800
WIRE 64 816 -16 816
WIRE 112 816 64 816
WIRE 144 816 112 816
WIRE 288 816 224 816
WIRE -80 832 -112 832
WIRE -112 864 -112 832
WIRE -48 864 -48 848
WIRE 64 880 64 816
WIRE 768 880 688 880
WIRE 944 880 848 880
WIRE 288 896 256 896
WIRE -192 976 -192 800
WIRE -48 976 -192 976
WIRE 64 976 64 944
WIRE 64 976 -48 976
WIRE 288 976 64 976
WIRE 576 976 480 976
WIRE 688 976 688 880
WIRE 688 976 576 976
WIRE 720 976 688 976
WIRE 944 976 944 880
WIRE 944 976 784 976
WIRE 288 1056 256 1056
WIRE 512 1056 480 1056
WIRE 864 1056 864 1040
WIRE 688 1072 688 976
WIRE 832 1072 688 1072
WIRE 944 1088 944 976
WIRE 944 1088 896 1088
WIRE 992 1088 944 1088
WIRE 1024 1088 992 1088
WIRE 832 1104 800 1104
WIRE 800 1152 800 1104
WIRE 864 1152 864 1120
FLAG 240 96 0
FLAG 256 256 +5V
FLAG 64 480 0
FLAG 512 256 +5V
FLAG 864 384 0
FLAG 864 224 +5V
FLAG -480 352 0
FLAG 688 192 0
FLAG 688 80 +5V
FLAG -48 240 0
FLAG -48 112 +5V
FLAG 688 480 0
FLAG 1024 320 out
FLAG 560 480 0
FLAG -192 320 0
FLAG -480 192 in
FLAG 864 1152 0
FLAG 864 1040 +5V
FLAG -48 864 0
FLAG -48 752 +5V
FLAG 1024 1088 out1
FLAG -480 800 in
FLAG 256 1056 0
FLAG -112 864 0
FLAG 256 896 +5V
FLAG 800 1152 0
FLAG 512 1056 0
DATAFLAG 112 176 "round($*1k)/1k"
DATAFLAG 160 336 "round($*1k)/1k"
DATAFLAG 752 336 "round($*1k)/1k"
DATAFLAG 992 320 "round($*1k)/1k"
DATAFLAG -400 192 "round($*1k)/1k"
DATAFLAG 112 816 "round($*1k)/1k"
DATAFLAG -48 976 "round($*1k)/1k"
DATAFLAG 992 1088 "round($*1k)/1k"
DATAFLAG -400 800 "round($*1k)/1k"
DATAFLAG 576 976 "round($*1k)/1k"
SYMBOL voltage -480 224 R0
WINDOW 3 -20 163 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 22 99 Left 2
SYMATTR Value PULSE(2.5 0.5 0 .1u .1u 500u 1m)
SYMATTR InstName V1
SYMBOL Misc\\EuropeanResistor 128 192 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 330
SYMBOL voltage 688 80 R0
SYMATTR InstName VCC
SYMATTR Value 5
SYMBOL Misc\\EuropeanResistor 48 352 R0
SYMATTR InstName R3
SYMATTR Value 150k
SYMBOL cap 48 240 R0
SYMATTR InstName C1
SYMATTR Value 22p
SYMBOL Misc\\EuropeanResistor 544 352 R0
SYMATTR InstName R4
SYMATTR Value 150k
SYMBOL IL300 384 208 R0
SYMATTR InstName U3
SYMBOL cap 672 384 R0
SYMATTR InstName C2
SYMATTR Value 22p
SYMBOL Opamps\\LTC6085 -48 176 R0
SYMATTR InstName U4
SYMBOL Opamps\\LTC6085 864 320 R0
SYMATTR InstName U1
SYMBOL Misc\\EuropeanResistor -336 208 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap -208 224 R0
SYMATTR InstName C3
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor 128 832 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 330
SYMBOL cap 48 880 R0
SYMATTR InstName C4
SYMATTR Value 22p
SYMBOL Misc\\EuropeanResistor 752 896 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 150k
SYMBOL IL300 384 928 R0
SYMATTR InstName U2
SYMBOL Opamps\\LTC6085 -48 816 R0
SYMATTR InstName U5
SYMBOL Opamps\\LTC6085 864 1088 R0
SYMATTR InstName U6
SYMBOL Misc\\EuropeanResistor -336 816 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 150k
SYMBOL cap 720 992 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C6
SYMATTR Value 22p
TEXT -544 -208 Left 2 !.op
TEXT -544 -176 Left 2 ;.tran 0 1m 0 10u
TEXT -544 -144 Left 2 !.options plotwinsize=0
TEXT 72 -176 Left 5 ;Linear Opto Coupler With IL300
TEXT -544 -112 Left 2 !.dc V1 0 5 .01
TEXT -544 -80 Left 2 !.options gmin=1e-10
TEXT 184 488 Left 2 ;Adjust R4 for 5V (100k..220k)
TEXT 672 768 Left 2 ;Adjust R4 for 5V (100k..220k)
TEXT 24 704 Left 4 ;Only rail to rail at output required (TLC272)
TEXT 0 -8 Left 4 ;Rail to rail at input and output required
RECTANGLE Normal 1104 544 -560 -48 2
RECTANGLE Normal 1104 1200 -560 656 2
CIRCLE Normal 656 512 496 352 2
CIRCLE Normal 896 944 736 784 2