Version 4
SHEET 1 884 1172
WIRE -320 -96 -320 -112
WIRE 320 -48 272 -48
WIRE 448 -48 400 -48
WIRE 48 -16 48 -48
WIRE -320 16 -320 -16
WIRE 368 48 368 32
WIRE 272 64 272 -48
WIRE 336 64 272 64
WIRE 448 80 448 -48
WIRE 448 80 400 80
WIRE 544 80 448 80
WIRE -96 96 -320 96
WIRE 48 96 48 64
WIRE 48 96 -16 96
WIRE 336 96 48 96
WIRE -320 112 -320 96
WIRE 48 128 48 96
WIRE 272 128 272 64
WIRE 368 128 368 112
WIRE -320 240 -320 192
WIRE 48 240 48 208
WIRE 272 240 272 208
WIRE 160 496 -16 496
WIRE 320 496 272 496
WIRE 448 496 400 496
WIRE 160 528 160 496
WIRE 368 592 368 576
WIRE 272 608 272 496
WIRE 336 608 272 608
WIRE 448 624 448 496
WIRE 448 624 400 624
WIRE 544 624 448 624
WIRE 16 640 -48 640
WIRE 160 640 160 608
WIRE 160 640 96 640
WIRE 336 640 160 640
WIRE 272 672 272 608
WIRE 368 672 368 656
WIRE 272 784 272 752
WIRE 448 864 272 864
WIRE 352 928 352 912
WIRE 272 944 272 864
WIRE 320 944 272 944
WIRE 448 960 448 864
WIRE 448 960 384 960
WIRE 512 960 448 960
WIRE -16 976 -48 976
WIRE 96 976 64 976
WIRE 208 976 176 976
WIRE 272 976 208 976
WIRE 320 976 272 976
WIRE 272 1008 272 976
WIRE 352 1008 352 992
WIRE 208 1024 208 976
WIRE 208 1120 208 1088
WIRE 272 1120 272 1088
FLAG 48 -48 V+
FLAG 48 240 0
FLAG 272 240 0
FLAG 368 128 0
FLAG 368 32 V+
FLAG -320 16 0
FLAG -320 -112 V+
FLAG 544 80 out1
FLAG -320 240 0
FLAG -320 96 in
FLAG 272 784 0
FLAG 368 672 0
FLAG 368 576 V+
FLAG -48 640 in
FLAG 544 624 out2
FLAG 272 1120 0
FLAG 352 1008 0
FLAG 352 912 V+
FLAG -48 976 V+
FLAG 512 960 2V467
FLAG -16 496 2V467
FLAG 208 1120 0
SYMBOL res 0 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 32 -32 R0
SYMATTR InstName R2
SYMATTR Value 6.81k
SYMBOL res 32 112 R0
WINDOW 3 -2 174 Left 2
SYMATTR Value {1/(1/6.81k+1/287k)}
SYMATTR InstName R3
SYMBOL Opamps\\LT1367 368 16 R0
SYMATTR InstName U2
SYMBOL res 256 112 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 304 -32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL voltage -320 -112 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -320 96 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value PWL(0,0,2,2)
SYMBOL res 144 512 R0
SYMATTR InstName R7
SYMATTR Value 3.333k
SYMBOL res 112 624 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL Opamps\\LT1367 368 560 R0
SYMATTR InstName U1
SYMBOL res 256 656 R0
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res 304 512 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL res 256 992 R0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL res 80 992 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL Opamps\\LT1367 352 896 R0
SYMATTR InstName U3
SYMBOL res -32 992 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R12
SYMATTR Value 270
SYMBOL cap 192 1024 R0
SYMATTR InstName C1
SYMATTR Value 1µ
TEXT -336 -280 Left 2 !;ac dec 10 1k 10meg
TEXT -336 -248 Left 2 !.tran 0 2 0
TEXT 64 192 Left 2 ;6.81k||287k
TEXT -24 -256 Left 4 ;Level Shifter 0..2V -> 3.7V..4.7V
TEXT 472 1000 Left 2 ;2.467V
TEXT -56 944 Left 2 ;5V
TEXT 64 1056 Left 2 ;C optional
RECTANGLE Normal 640 1168 -128 432 2
RECTANGLE Normal 640 320 -128 -128 2