Version 4 SHEET 1 4472 1028 WIRE -2176 -832 -2176 -848 WIRE -2048 -832 -2048 -848 WIRE -2176 -736 -2176 -752 WIRE -2048 -736 -2048 -752 WIRE -2464 -608 -2528 -608 WIRE -2336 -608 -2400 -608 WIRE -2848 -512 -3104 -512 WIRE -2528 -512 -2528 -608 WIRE -2528 -512 -2784 -512 WIRE -2464 -512 -2528 -512 WIRE -2336 -512 -2336 -608 WIRE -2336 -512 -2384 -512 WIRE -3104 -480 -3104 -512 WIRE -3104 -384 -3104 -400 WIRE -2528 -352 -2528 -512 WIRE -2512 -352 -2528 -352 WIRE -2336 -320 -2336 -512 WIRE -2336 -320 -2368 -320 WIRE -2304 -320 -2336 -320 WIRE -2512 -288 -2544 -288 WIRE -3104 -240 -3104 -304 FLAG -2176 -736 0 FLAG -2048 -736 0 FLAG -2176 -848 +V FLAG -2048 -848 -V FLAG -2544 -288 0 FLAG -2304 -320 Out FLAG -2480 -400 +V FLAG -2432 -240 +V FLAG -2480 -240 -V FLAG -3104 -240 0 SYMBOL voltage -2176 -848 R0 SYMATTR InstName V1 SYMATTR Value 2.5 SYMBOL voltage -2048 -848 R0 SYMATTR InstName V2 SYMATTR Value -2.5 SYMBOL res -2368 -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 Cparasitic SYMATTR Value 150f SYMBOL diode -2784 -528 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL voltage -3104 -496 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value SINE(0 3m 33kHz) SYMBOL voltage -3104 -400 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V4 SYMATTR Value {DC} TEXT -2696 -800 Bottom 2 ;Trans-Impedance Amplifier TEXT -3216 -176 Left 2 !.step param DC 0.1 5 0.2 TEXT -3218 -140 Left 2 !.tran 50u