Version 4
SHEET 1 4472 1028
WIRE -2784 -656 -2784 -720
WIRE -2784 -656 -2912 -656
WIRE -2784 -624 -2784 -656
WIRE -2912 -608 -2912 -656
WIRE -2576 -608 -2640 -608
WIRE -2448 -608 -2512 -608
WIRE -2912 -512 -2912 -544
WIRE -2784 -512 -2784 -544
WIRE -2784 -512 -2912 -512
WIRE -2640 -512 -2640 -608
WIRE -2640 -512 -2784 -512
WIRE -2576 -512 -2640 -512
WIRE -2448 -512 -2448 -608
WIRE -2448 -512 -2496 -512
WIRE -2960 -352 -2960 -368
WIRE -2832 -352 -2832 -368
WIRE -2640 -352 -2640 -512
WIRE -2624 -352 -2640 -352
WIRE -2448 -320 -2448 -512
WIRE -2448 -320 -2480 -320
WIRE -2416 -320 -2448 -320
WIRE -2624 -288 -2656 -288
WIRE -2960 -256 -2960 -272
WIRE -2832 -256 -2832 -272
FLAG -2960 -256 0
FLAG -2832 -256 0
FLAG -2960 -368 +V
FLAG -2832 -368 -V
FLAG -2656 -288 0
FLAG -2416 -320 Out
FLAG -2784 -720 +V
FLAG -2592 -400 +V
FLAG -2544 -240 +V
FLAG -2592 -240 -V
SYMBOL voltage -2960 -368 R0
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL voltage -2832 -368 R0
SYMATTR InstName V2
SYMATTR Value -2.5
SYMBOL res -2480 -528 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL LTC6268 -2592 -320 R0
SYMATTR InstName U1
SYMBOL current -2784 -624 R0
WINDOW 3 38 44 Left 2
WINDOW 123 16 80 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value 0
SYMATTR Value2 AC 1
SYMATTR InstName I1
SYMBOL cap -2512 -624 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Cparasitic
SYMATTR Value 150f
SYMBOL cap -2928 -608 R0
SYMATTR InstName C3
SYMATTR Value 700f
TEXT -2432 -240 Left 2 !.ac oct 10 10K 1G
TEXT -2872 -680 Center 2 ;PhotoDiode
TEXT -2848 -488 Center 2 ;FCI-125G-006
TEXT -2696 -800 Bottom 2 ;20K Ohm Gain Trans-Impedance Amplifier
RECTANGLE Normal -2696 -464 -2992 -704 2