Version 4
SHEET 1 1100 756
WIRE -176 144 -240 144
WIRE 48 144 -96 144
WIRE 464 144 272 144
WIRE -240 176 -240 144
WIRE 464 176 464 144
WIRE 48 208 32 208
WIRE 48 272 -80 272
WIRE 384 272 272 272
WIRE 464 272 464 256
WIRE -240 288 -240 256
WIRE -80 288 -80 272
WIRE 384 304 384 272
WIRE -80 384 -80 368
WIRE 384 400 384 384
FLAG 32 208 0
FLAG 464 272 0
FLAG 384 400 0
FLAG -80 384 0
FLAG -240 288 0
SYMBOL LTC1728-5 160 240 R0
SYMATTR InstName U1
SYMBOL res -80 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL voltage -80 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 1.05 7 1.05 8 0.95 9 1.05)
SYMBOL voltage 384 288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PWL(0 5 4 5 5 4.5 6 5)
SYMATTR InstName V2
SYMBOL voltage 464 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PWL(0 3.3 1 3.3 2 3.0 3 3.3)
SYMBOL voltage -240 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 5
TEXT 632 456 Left 2 !.tran 10