Version 4
SHEET 1 988 680
WIRE 32 -352 -48 -352
WIRE 160 -352 96 -352
WIRE -48 -272 -48 -352
WIRE 16 -272 -48 -272
WIRE 160 -272 160 -352
WIRE 160 -272 96 -272
WIRE 32 -80 32 -192
WIRE -336 -64 -384 -64
WIRE -288 -64 -336 -64
WIRE -240 -64 -288 -64
WIRE -48 -64 -48 -272
WIRE -48 -64 -240 -64
WIRE -16 -64 -48 -64
WIRE -384 -48 -384 -64
WIRE -336 -48 -336 -64
WIRE -288 -48 -288 -64
WIRE 160 -48 160 -272
WIRE 160 -48 80 -48
WIRE 224 -48 160 -48
WIRE 352 -48 304 -48
WIRE 400 -48 352 -48
WIRE -16 16 -16 -32
WIRE -336 32 -336 16
WIRE -336 32 -384 32
WIRE -288 32 -336 32
WIRE -240 32 -240 0
WIRE -240 32 -288 32
WIRE 32 96 32 -16
WIRE -464 128 -560 128
WIRE 784 128 752 128
WIRE 816 128 784 128
WIRE -560 144 -560 128
WIRE 784 160 784 128
WIRE -464 224 -464 208
WIRE -288 224 -288 32
WIRE -288 224 -464 224
FLAG -16 16 0
FLAG 32 -192 +V
IOPIN 32 -192 In
FLAG 32 96 -V
IOPIN 32 96 In
FLAG -560 144 0
FLAG 784 160 0
FLAG 752 48 +V
FLAG 816 48 -V
FLAG 352 32 0
SYMBOL lib_OPA657 16 -48 R0
WINDOW 38 431 164 Center 2
SYMATTR InstName U1
SYMBOL cap 96 -368 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 -14 -20 VTop 2
SYMATTR InstName Cf
SYMATTR Value 1.5p
SYMBOL res 320 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rs
SYMATTR Value 50
SYMBOL Misc\\EuropeanResistor 112 -288 R90
WINDOW 0 3 56 VBottom 2
WINDOW 3 -14 -7 VTop 2
SYMATTR InstName Rf
SYMATTR Value 1k
SYMBOL res -304 -64 R0
WINDOW 0 0 -59 Left 2
WINDOW 3 -7 -29 Left 2
SYMATTR InstName R1
SYMATTR Value 10G
SYMBOL cap -352 -48 R0
WINDOW 0 3 -79 Left 2
WINDOW 3 6 -49 Left 2
SYMATTR InstName C5
SYMATTR Value 3p
SYMBOL voltage -464 112 R0
WINDOW 3 -43 126 Left 2
WINDOW 123 -43 154 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value 12
SYMATTR InstName V1
SYMBOL voltage 752 32 R0
WINDOW 3 -32 102 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value 5
SYMATTR InstName V2
SYMBOL voltage 816 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -5
SYMBOL current -384 -48 R0
WINDOW 0 -70 13 Left 2
WINDOW 3 -76 47 Left 2
WINDOW 123 -136 17 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 1µ
SYMBOL res 336 -64 R0
SYMATTR InstName R2
SYMATTR Value 50
SYMBOL diode -224 0 R180
WINDOW 0 -43 33 Left 2
WINDOW 3 -35 -12 Left 2
SYMATTR InstName D1
TEXT 328 176 Left 2 !.tran 1u
TEXT 320 144 Left 2 !;ac oct 101 10k 500Meg
TEXT 320 208 Left 2 ;.step param Rx 1k 30k 0.5k