Version 4
SHEET 1 880 680
WIRE -160 -48 -208 -48
WIRE -112 -48 -160 -48
WIRE -80 -48 -112 -48
WIRE 256 -48 -80 -48
WIRE 512 -48 256 -48
WIRE 624 -48 512 -48
WIRE -80 -16 -80 -48
WIRE 624 -16 624 -48
WIRE -112 32 -112 -48
WIRE -96 32 -112 32
WIRE 0 32 -16 32
WIRE 544 80 480 80
WIRE 624 80 624 64
WIRE 624 80 544 80
WIRE -80 96 -80 80
WIRE 0 96 0 32
WIRE 0 96 -80 96
WIRE 224 96 0 96
WIRE 480 96 480 80
WIRE 224 128 224 96
WIRE 384 144 352 144
WIRE 416 144 384 144
WIRE 512 144 512 -48
WIRE 512 144 496 144
WIRE 224 160 224 128
WIRE 256 160 256 -48
WIRE 624 160 624 80
WIRE -208 192 -208 -48
WIRE 64 208 16 208
WIRE 192 208 64 208
WIRE 352 224 352 144
WIRE 352 224 304 224
WIRE 480 224 480 192
WIRE 480 224 400 224
WIRE 192 240 160 240
WIRE -80 256 -80 96
WIRE 480 256 480 224
WIRE 352 304 352 224
WIRE 416 304 352 304
WIRE 512 304 496 304
WIRE 16 336 16 208
WIRE 160 336 160 240
WIRE 192 336 160 336
WIRE 400 336 400 224
WIRE 400 336 192 336
WIRE 480 368 480 352
WIRE 544 368 480 368
WIRE 624 368 624 240
WIRE 624 368 544 368
WIRE 624 400 624 368
WIRE -208 544 -208 272
WIRE -80 544 -80 336
WIRE -80 544 -208 544
WIRE 16 544 16 416
WIRE 16 544 -80 544
WIRE 512 544 512 304
WIRE 512 544 16 544
WIRE 624 544 624 480
WIRE 624 544 512 544
WIRE -208 560 -208 544
FLAG -208 560 0
FLAG 544 80 CPU
FLAG 544 368 CPD
FLAG 192 336 UREF
FLAG 64 208 UIN
FLAG 224 128 UB
FLAG 384 144 SWT
FLAG -160 -48 UDD
SYMBOL voltage -208 176 R0
SYMATTR InstName VDD
SYMATTR Value 5
SYMBOL current -80 256 M0
SYMATTR InstName IB
SYMATTR Value 10µ
SYMBOL res 608 -32 R0
SYMATTR InstName R1
SYMATTR Value 200k
SYMBOL res 608 144 R0
SYMATTR InstName R2
SYMATTR Value 250k
SYMBOL res 608 384 R0
SYMATTR InstName R3
SYMATTR Value 50k
SYMBOL AMScells\\n4 432 256 R0
SYMATTR InstName U1
SYMBOL AMScells\\p4 432 96 R0
SYMATTR InstName U2
SYMBOL voltage 16 320 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 40 91 Left 2
SYMATTR Value PULSE(0 5 0 1m 1m 10µ 2.02m)
SYMATTR InstName VIN
SYMBOL OpaA1X 240 224 R0
SYMATTR InstName X1
SYMBOL AMScells\\p4 -32 -16 M0
SYMATTR InstName U3
TEXT 48 504 Left 2 !.include C:/Programs/LTspiceIV/lib/sub/AMSlev49.sub
TEXT 216 472 Left 2 !.tran 0 10m 0