Version 4
SHEET 1 1040 680
WIRE 704 -160 80 -160
WIRE 848 -160 784 -160
WIRE 256 -80 -144 -80
WIRE 720 -80 256 -80
WIRE 80 -32 80 -160
WIRE 224 -32 80 -32
WIRE 400 -32 288 -32
WIRE 80 32 80 -32
WIRE 224 32 80 32
WIRE 400 32 400 -32
WIRE 400 32 304 32
WIRE 256 80 256 -80
WIRE 720 80 720 -80
WIRE 80 96 80 32
WIRE 224 96 80 96
WIRE 688 96 672 96
WIRE 400 112 400 32
WIRE 400 112 288 112
WIRE 416 112 400 112
WIRE 528 112 496 112
WIRE 640 112 528 112
WIRE 848 112 848 -160
WIRE 848 112 752 112
WIRE 80 128 80 96
WIRE 80 128 -32 128
WIRE 224 128 192 128
WIRE 640 128 640 112
WIRE 688 128 640 128
WIRE 848 128 848 112
WIRE -144 160 -144 -80
WIRE -32 160 -32 128
WIRE 80 160 80 128
WIRE 528 160 528 112
WIRE 400 192 400 112
WIRE 672 208 672 96
WIRE 848 208 848 192
WIRE 848 208 672 208
WIRE -144 304 -144 240
WIRE -32 304 -32 240
WIRE 80 304 80 240
WIRE 192 304 192 128
WIRE 256 304 256 144
WIRE 528 304 528 224
WIRE 720 304 720 144
WIRE 848 304 848 288
FLAG 80 304 0
FLAG 256 304 0
FLAG -144 304 0
FLAG 192 304 0
FLAG 528 304 0
FLAG 720 304 0
FLAG 848 304 0
FLAG 400 192 out
FLAG -32 304 0
SYMBOL current 80 160 R0
WINDOW 0 24 88 Left 0
WINDOW 3 24 0 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value PULSE(0u 1u 10u 1u 1u 4u 100m)
SYMBOL Opamps\\LT1211 256 48 R0
SYMATTR InstName U1
SYMBOL voltage -144 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL res 320 16 R90
WINDOW 0 8 -22 VBottom 0
WINDOW 3 26 -17 VTop 0
SYMATTR InstName R1
SYMATTR Value 1meg
SYMBOL cap 288 -48 R90
WINDOW 0 8 -4 VBottom 0
WINDOW 3 27 -5 VTop 0
SYMATTR InstName C1
SYMATTR Value 2p2
SYMBOL res 512 96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL cap 512 160 R0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL Opamps\\LT1211 720 48 R0
SYMATTR InstName U2
SYMBOL res 832 192 R0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL current -32 160 R0
WINDOW 0 24 88 Left 0
WINDOW 3 24 116 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value 1m
SYMBOL res 800 -176 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL cap 832 128 R0
SYMATTR InstName C3
SYMATTR Value 220n
TEXT -176 328 Left 0 !.tran 1000m