Version 4
SHEET 1 880 680
WIRE -112 -48 -192 -48
WIRE -64 -48 -112 -48
WIRE 432 -48 -64 -48
WIRE 432 16 432 -48
WIRE -64 64 -64 -48
WIRE 96 160 80 160
WIRE 160 160 96 160
WIRE 256 160 224 160
WIRE 432 160 432 96
WIRE 496 160 432 160
WIRE 528 160 496 160
WIRE -192 176 -192 -48
WIRE 80 176 80 160
WIRE -64 224 -64 144
WIRE 16 224 -64 224
WIRE -64 240 -64 224
WIRE 432 240 432 160
WIRE -80 288 -96 288
WIRE 16 288 16 224
WIRE 16 288 0 288
WIRE 144 288 16 288
WIRE 256 288 256 160
WIRE 256 288 224 288
WIRE 368 288 256 288
WIRE 464 288 448 288
WIRE -192 384 -192 256
WIRE -96 384 -96 288
WIRE -96 384 -192 384
WIRE -64 384 -64 336
WIRE -64 384 -96 384
WIRE 80 384 80 256
WIRE 80 384 -64 384
WIRE 224 384 80 384
WIRE 432 384 432 336
WIRE 432 384 224 384
WIRE 464 384 464 288
WIRE 464 384 432 384
WIRE 224 400 224 384
FLAG 224 400 0
FLAG -112 -48 UDD
FLAG 96 160 UIN
FLAG 496 160 UOUT
SYMBOL voltage -192 160 R0
WINDOW 123 24 114 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName VDD
SYMATTR Value 3
SYMBOL voltage 80 160 R0
WINDOW 123 24 114 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1 0
SYMATTR InstName VIN
SYMATTR Value 0
SYMBOL current -64 64 R0
SYMATTR InstName I1
SYMATTR Value 10µ
SYMBOL AMScells\\n4 384 240 R0
SYMATTR InstName U1
SYMBOL AMScells\\n4 -16 240 M0
SYMATTR InstName U2
SYMBOL res 240 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 150k
SYMBOL cap 224 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1n
SYMBOL res 448 112 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 150k
TEXT -32 456 Left 2 !.include C:/programs/LTspiceIV/lib/sub/AMSlev49.sub
TEXT -32 424 Left 2 !.ac dec 9 1 1000meg
TEXT -136 456 Left 2 !;op