Version 4
SHEET 1 1224 680
WIRE 672 0 624 0
WIRE 800 0 736 0
WIRE 960 48 960 16
WIRE 64 112 -352 112
WIRE 176 112 144 112
WIRE 528 112 176 112
WIRE 624 112 624 0
WIRE 624 112 528 112
WIRE 672 112 624 112
WIRE 800 112 800 0
WIRE 800 112 752 112
WIRE 176 144 176 112
WIRE 960 160 960 128
WIRE 176 240 176 208
WIRE 720 240 720 224
WIRE -352 256 -352 112
WIRE -352 256 -480 256
WIRE -224 256 -352 256
WIRE 624 256 624 112
WIRE 688 256 624 256
WIRE 800 272 800 112
WIRE 800 272 752 272
WIRE 864 272 800 272
WIRE 912 272 864 272
WIRE 1024 272 992 272
WIRE 1088 272 1024 272
WIRE -480 288 -480 256
WIRE -224 288 -224 256
WIRE 688 288 624 288
WIRE 1024 288 1024 272
WIRE -352 304 -352 256
WIRE 720 320 720 304
WIRE 1024 368 1024 352
WIRE 384 384 352 384
WIRE 496 384 464 384
WIRE 624 384 624 288
WIRE 624 384 496 384
WIRE 656 384 624 384
WIRE 496 416 496 384
WIRE -480 432 -480 368
WIRE -352 432 -352 368
WIRE -352 432 -480 432
WIRE -224 432 -224 368
WIRE -224 432 -352 432
WIRE 624 432 624 384
WIRE 496 528 496 496
WIRE 624 528 624 496
WIRE -352 608 -352 432
FLAG 496 528 0
FLAG 720 224 VCC
FLAG 960 160 0
FLAG 960 16 VCC
FLAG 176 240 0
FLAG -352 608 0
FLAG 1088 272 out
IOPIN 1088 272 Out
FLAG 528 112 in
FLAG 720 320 0
FLAG 1024 368 0
FLAG 624 528 0
FLAG 352 384 VCC
FLAG 656 384 offset
FLAG 864 272 out1
DATAFLAG 560 384 "round($*1k)/1k"
SYMBOL cap 160 144 R0
SYMATTR InstName Ccable
SYMATTR Value 100p
SYMBOL cap 672 16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 22p
SYMBOL voltage 960 32 R0
WINDOW 123 24 132 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL diode -368 368 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value DP
SYMBOL current -480 288 R0
WINDOW 3 -46 184 Left 2
WINDOW 123 24 116 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0u 50u 100u 100n 100n 100u 200u)
SYMATTR Value2 AC 1
SYMATTR InstName I1
SYMBOL res -240 272 R0
SYMATTR InstName Rsh
SYMATTR Value 1G
SYMBOL Opamps\\LTC6241 720 272 R0
SYMATTR InstName U1
SYMBOL res 160 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rcable
SYMATTR Value 100m
SYMBOL res 768 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 66k
SYMBOL res 1008 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 220
SYMBOL cap 1008 288 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res 480 400 R0
SYMATTR InstName R4
SYMATTR Value 2.2k
SYMBOL res 480 368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100k
SYMBOL cap 608 432 R0
SYMATTR InstName C3
SYMATTR Value 10u
TEXT -552 -96 Left 2 !.tran 0 1m 0 1u
TEXT -552 -72 Left 2 !.options plotwinsize=0
TEXT -552 -136 Left 2 ;.ac dec 100 1k 1e7
TEXT -552 -40 Left 2 !.model DP D(Is=1e-10 Cjo=70p Rs=5 N=1.5)
TEXT -240 -184 Left 3 ;PHOTO DIODE WITH TRANSIMPEDANCE AMPLIFIER
TEXT -504 224 Left 2 ;Photo Diode
TEXT -344 176 Left 2 ;K
TEXT -344 552 Left 2 ;A
TEXT -288 224 Left 2 ;BPW34
TEXT -544 0 Left 2 ;BPW34: 80uA @ 1000Lux
TEXT 112 24 Left 2 ;Cable
LINE Normal 624 288 560 288 1
LINE Normal 560 304 560 288 1
LINE Normal 576 304 544 304 1
LINE Normal 560 320 576 304 1
LINE Normal 544 304 560 320 1
RECTANGLE Normal -32 528 -536 200 1
RECTANGLE Normal 272 272 32 48 1