Version 4
SHEET 1 944 680
WIRE -80 0 -160 0
WIRE 32 0 -80 0
WIRE 240 0 32 0
WIRE 432 0 240 0
WIRE 464 0 432 0
WIRE 544 0 464 0
WIRE 544 16 544 0
WIRE 464 32 464 0
WIRE -160 80 -160 0
WIRE 32 80 32 0
WIRE 432 80 432 0
WIRE 448 80 432 80
WIRE 544 80 528 80
WIRE -32 128 -112 128
WIRE 112 128 96 128
WIRE 128 128 112 128
WIRE 240 128 240 0
WIRE 192 144 160 144
WIRE 464 144 464 128
WIRE 512 144 464 144
WIRE 544 144 544 80
WIRE 544 144 512 144
WIRE 352 176 320 176
WIRE 384 176 352 176
WIRE 128 208 128 128
WIRE 192 208 128 208
WIRE 704 240 608 240
WIRE -112 272 -112 128
WIRE -112 272 -176 272
WIRE 272 272 272 224
WIRE 272 272 -112 272
WIRE 464 272 464 144
WIRE 464 272 272 272
WIRE 704 272 704 240
WIRE 464 320 464 272
WIRE 464 432 464 400
WIRE 48 448 16 448
WIRE 160 448 160 144
WIRE 160 448 128 448
WIRE 192 448 160 448
WIRE 512 448 192 448
WIRE 608 448 608 240
WIRE 608 448 592 448
WIRE 624 448 608 448
WIRE 16 480 16 448
FLAG 16 480 0
FLAG -80 0 VDD
FLAG -176 272 UB
IOPIN -176 272 In
FLAG 624 448 SZAB
IOPIN 624 448 In
FLAG 192 448 UC
FLAG 352 176 ERR
FLAG 112 128 UBG
FLAG -160 160 0
FLAG 704 352 0
FLAG 464 432 0
FLAG 512 144 UB
SYMBOL res 608 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 85K
SYMBOL res 144 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL bgr 32 128 R0
SYMATTR InstName BG
SYMBOL AmpAA 240 176 R0
SYMATTR InstName X1
SYMBOL voltage -160 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName VDD
SYMATTR Value 5
SYMBOL voltage 704 256 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Vszab
SYMATTR Value 12
SYMBOL pa 512 32 M0
SYMATTR InstName U1
SYMBOL current 464 320 R0
SYMATTR InstName IB1
SYMATTR Value 10µ
SYMBOL cap 528 16 R0
SYMATTR InstName C1
SYMATTR Value 20p
TEXT -208 344 Left 2 !.include C:/Programs/LTspiceIV/lib/sub/GFlev8.sub
TEXT 224 344 Left 2 !.dc Vszab 0 20 1m