Version 4
SHEET 1 880 680
WIRE 64 16 -16 16
WIRE 416 16 64 16
WIRE 448 16 416 16
WIRE 416 64 416 16
WIRE 352 112 256 112
WIRE 448 112 448 16
WIRE 448 112 432 112
WIRE -16 176 -16 16
WIRE 144 208 128 208
WIRE 256 208 256 112
WIRE 256 208 144 208
WIRE 288 208 256 208
WIRE 416 208 416 160
WIRE 416 208 368 208
WIRE 480 208 416 208
WIRE 512 208 480 208
WIRE 128 240 128 208
WIRE 416 256 416 208
WIRE 256 304 256 208
WIRE 352 304 256 304
WIRE 448 304 432 304
WIRE -16 384 -16 256
WIRE 128 384 128 320
WIRE 128 384 -16 384
WIRE 224 384 128 384
WIRE 416 384 416 352
WIRE 416 384 224 384
WIRE 448 384 448 304
WIRE 448 384 416 384
WIRE 224 400 224 384
FLAG 224 400 0
FLAG 64 16 UDD
FLAG 144 208 UIN
FLAG 480 208 UOUT
SYMBOL voltage -16 160 R0
WINDOW 123 24 114 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName VDD
SYMATTR Value 3
SYMBOL res 384 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL AMScells\\n4 368 256 R0
SYMATTR InstName U1
SYMBOL AMScells\\p4 368 64 R0
SYMATTR InstName U2
SYMATTR SpiceLine2 mm=2
SYMBOL voltage 128 224 R0
WINDOW 123 24 114 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName VIN
SYMATTR Value 1.5
TEXT -32 456 Left 2 !.include C:/programs/LTspiceIV/lib/sub/AMSlev49.sub
TEXT -24 416 Left 2 !.dc VIN 0 3 1m