Version 4
SHEET 1 880 680
WIRE -256 128 -256 96
WIRE -256 96 -240 96
WIRE -240 96 -192 96
WIRE 192 192 144 192
WIRE -48 80 -48 64
WIRE 144 64 144 112
WIRE -48 144 -48 272
WIRE -48 272 144 272
WIRE -112 144 -112 128
WIRE -112 128 -80 128
WIRE -96 16 -96 96
WIRE -96 96 -112 96
WIRE -96 96 -80 96
WIRE -16 16 48 16
WIRE 48 16 48 112
WIRE 48 112 -16 112
WIRE -48 64 144 64
FLAG -256 208 0
FLAG -240 96 PulseIn
FLAG 192 192 0
FLAG -112 144 0
FLAG 48 16 Qint
SYMBOL voltage -256 112 R0
WINDOW 0 -12 58 Left 0
WINDOW 3 24 104 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0V 100mV 100nS 0.5nS 0.5nS 1nS 7.5nS 5)
SYMBOL voltage 144 96 R0
WINDOW 0 -15 55 Left 0
WINDOW 3 37 58 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 5V
SYMBOL voltage 144 176 R0
WINDOW 0 -13 54 Left 0
WINDOW 3 37 53 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 5V
SYMBOL res -208 112 R270
WINDOW 0 61 64 VTop 0
WINDOW 3 61 64 VBottom 0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL Opamps\\LT1886 -48 48 R0
SYMATTR InstName U1
SYMBOL res -112 32 R270
WINDOW 0 61 64 VTop 0
WINDOW 3 61 64 VBottom 0
SYMATTR InstName R2
SYMATTR Value 500
TEXT -330 242 Left 0 !.tran 0 200nS 50nS startup