Version 4
SHEET 1 1576 848
WIRE 672 48 496 48
WIRE 496 64 496 48
WIRE 672 64 672 48
WIRE 224 112 -384 112
WIRE 128 144 -208 144
WIRE -208 160 -208 144
WIRE 496 160 496 144
WIRE 496 160 320 160
WIRE 672 160 672 144
WIRE 496 176 496 160
WIRE 128 192 128 144
WIRE 224 192 224 112
WIRE 320 192 320 160
WIRE -384 240 -384 112
WIRE -208 256 -208 240
WIRE 496 272 496 256
WIRE 16 304 0 304
WIRE 384 304 368 304
WIRE 528 304 464 304
WIRE 528 320 528 304
WIRE -384 336 -384 320
WIRE 528 416 528 400
WIRE 16 432 0 432
WIRE 448 432 368 432
WIRE 448 448 448 432
WIRE 224 496 224 480
WIRE 448 544 448 528
FLAG 448 544 0
FLAG 528 416 0
FLAG 672 160 0
FLAG -208 256 0
FLAG -384 336 0
FLAG 224 496 0
FLAG 0 304 0
FLAG 0 432 0
FLAG 496 272 0
SYMBOL voltage 672 48 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value PULSE(1.2 0 4.5 .5 .5 .5)
SYMATTR InstName V1
SYMBOL voltage -208 144 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value PULSE(5 0 .5 .5 .5 .5)
SYMATTR InstName V2
SYMBOL voltage -384 224 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value PULSE(3.3 0 2.5 0.5 0.5 0.5)
SYMATTR InstName V3
SYMBOL voltage 528 304 R0
SYMATTR InstName V4
SYMATTR Value 5
SYMBOL res 480 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL cap 80 288 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 47n
SYMBOL cap 80 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 47n
SYMBOL voltage 448 432 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR InstName V6
SYMATTR Value PULSE(0 2 1m 1u 1u 50u 800m 9)
SYMBOL res 480 48 R0
SYMATTR InstName R1
SYMATTR Value 66.5K
SYMBOL res 480 160 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL LTC1726-5 224 400 R0
SYMATTR InstName U1
TEXT 744 576 Left 2 !.tran 10