Version 4
SHEET 1 4472 1028
WIRE -2848 -608 -2896 -608
WIRE -2736 -608 -2784 -608
WIRE -2464 -608 -2544 -608
WIRE -2336 -608 -2400 -608
WIRE -2896 -512 -2896 -608
WIRE -2896 -512 -3040 -512
WIRE -2848 -512 -2896 -512
WIRE -2736 -512 -2736 -608
WIRE -2736 -512 -2784 -512
WIRE -2640 -512 -2736 -512
WIRE -2544 -512 -2544 -608
WIRE -2544 -512 -2640 -512
WIRE -2480 -512 -2544 -512
WIRE -2336 -512 -2336 -608
WIRE -2336 -512 -2400 -512
WIRE -2640 -480 -2640 -512
WIRE -2640 -384 -2640 -416
WIRE -3040 -368 -3040 -512
WIRE -2544 -352 -2544 -512
WIRE -2512 -352 -2544 -352
WIRE -2336 -320 -2336 -512
WIRE -2336 -320 -2368 -320
WIRE -2304 -320 -2336 -320
WIRE -2512 -288 -2544 -288
WIRE -3040 -208 -3040 -288
WIRE -3040 -96 -3040 -112
WIRE -2912 -96 -2912 -112
WIRE -3040 0 -3040 -16
WIRE -2912 0 -2912 -16
FLAG -3040 0 0
FLAG -2912 0 0
FLAG -3040 -112 +V
FLAG -2912 -112 -V
FLAG -2544 -288 0
FLAG -2304 -320 Out
FLAG -2480 -400 +V
FLAG -2432 -240 +V
FLAG -2480 -240 -V
FLAG -3040 -208 0
FLAG -2640 -384 0
SYMBOL voltage -3040 -112 R0
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL voltage -2912 -112 R0
SYMATTR InstName V2
SYMATTR Value -2.5
SYMBOL res -2384 -528 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1Meg
SYMBOL LTC6268 -2480 -320 R0
SYMATTR InstName U1
SYMBOL cap -2400 -624 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Cf
SYMATTR Value 0.15p
SYMBOL voltage -3040 -384 R0
WINDOW 123 42 61 Left 2
WINDOW 3 40 92 Left 2
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 10m
SYMATTR Value {OFFSET}
SYMATTR InstName V3
SYMBOL cap -2656 -480 R0
SYMATTR InstName Cltg
SYMATTR Value 10p
SYMBOL cap -2784 -624 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10f
SYMBOL diode -2784 -528 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
TEXT -2432 -744 Bottom 2 ;Trans-Impedance Amplifier
TEXT -3056 -712 Left 2 ;.tran 2u
TEXT -3056 -824 Left 2 !.param OFFSET=0
TEXT -3056 -744 Left 2 ;.ac dec 100 10 10Meg
TEXT -3056 -784 Left 2 !.ac list 100k
TEXT -3056 -864 Left 2 !.step param OFFSET 0 10 0.5
TEXT -2576 -680 Left 2 ;Cfmin=f(Cleitung+Cdiode)
LINE Normal -2784 -576 -2848 -640 2
LINE Normal -2784 -640 -2848 -576 2