Version 4
SHEET 1 1224 1096
WIRE 176 0 112 0
WIRE 304 0 240 0
WIRE 448 48 448 16
WIRE 576 48 576 16
WIRE -272 112 -400 112
WIRE -176 112 -272 112
WIRE -48 112 -176 112
WIRE 112 112 112 0
WIRE 112 112 -48 112
WIRE 160 112 112 112
WIRE 304 112 304 0
WIRE 304 112 240 112
WIRE 448 160 448 128
WIRE 576 160 576 128
WIRE -272 192 -272 112
WIRE -192 192 -272 192
WIRE -400 224 -400 112
WIRE -192 224 -192 192
WIRE -48 224 -48 112
WIRE -272 240 -272 192
WIRE 208 240 208 224
WIRE 112 256 112 112
WIRE 176 256 112 256
WIRE 304 272 304 112
WIRE 304 272 240 272
WIRE 432 272 304 272
WIRE 528 272 432 272
WIRE 624 272 528 272
WIRE 176 288 112 288
WIRE 528 288 528 272
WIRE 432 304 432 272
WIRE 112 320 112 288
WIRE 208 320 208 304
WIRE -272 336 -272 304
WIRE -192 336 -192 304
WIRE -192 336 -272 336
WIRE -400 368 -400 304
WIRE -272 368 -272 336
WIRE -48 368 -48 288
WIRE 432 400 432 368
WIRE 528 400 528 368
WIRE 112 464 112 400
FLAG 112 464 0
FLAG 208 224 VCC
FLAG 448 160 0
FLAG 448 16 VCC
FLAG -48 368 0
FLAG -272 368 0
FLAG -400 368 0
FLAG 432 400 0
FLAG 624 272 out
FLAG 208 320 VEE
FLAG 528 400 0
FLAG 576 160 0
FLAG 576 16 VEE
FLAG -176 112 in
SYMBOL cap -64 224 R0
SYMATTR InstName Ccable
SYMATTR Value 15p
SYMBOL cap 176 16 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 3.3p
SYMBOL res 144 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 1e6
SYMBOL voltage 448 32 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL diode -288 304 M180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value DP
SYMBOL cap 416 304 R0
SYMATTR InstName Cload
SYMATTR Value 10p
SYMBOL current -400 224 R0
WINDOW 3 -31 195 Left 0
WINDOW 123 24 116 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0u 1u 10u 100n 100n 100u 200u)
SYMATTR Value2 AC 0
SYMATTR InstName I1
SYMBOL res -208 208 R0
SYMATTR InstName Rsh
SYMATTR Value {RSHUNT}
SYMBOL res 512 272 R0
SYMATTR InstName Rload
SYMATTR Value 10k
SYMBOL voltage 576 32 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL Opamps\\UniversalOpamp2 208 272 R0
SYMATTR InstName U1
SYMATTR SpiceLine2 en=10n enk=100 in=0 ink=0 Rin=500Meg
SYMBOL voltage 112 304 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1
SYMATTR InstName V4
SYMATTR Value 0
TEXT -400 -264 Left 0 ;.include myopamp.abc
TEXT -400 -160 Left 0 ;.tran 0 1m 0 10n
TEXT -400 -136 Left 0 !.options plotwinsize=0
TEXT -400 -200 Left 0 ;.ac dec 100 1k 1e6
TEXT -400 -88 Left 0 ;.noise V(out) I1 dec 100 1 1e6
TEXT -408 56 Left 0 !.model DP D(Is=1e-12 Cjo=310p Rs=10)
TEXT 208 448 Left 0 ;universalopamp2.asy
TEXT -416 -448 Left 0 ;PHOTO DIODE WITH TRANSIMPEDANCE AMPLIFIER
TEXT -400 -56 Left 0 ;.noise V(out) V4 dec 100 1 1e6
TEXT -400 -16 Left 0 !.ac dec 100 1 1e6
TEXT -392 -368 Left 0 ;Noise gain: V(out) @1\nOpen Loop Gain V(out)@2
TEXT 0 -264 Left 0 !.step param RSHUNT list 0.25G 1m
TEXT 0 -288 Left 0 !.param RSHUNT=0.25G
TEXT -392 -400 Left 0 ;Plot V(out)
RECTANGLE Normal -48 -320 -416 -416