Version 4
SHEET 1 880 680
WIRE 656 -144 112 -144
WIRE 320 -64 -32 -64
WIRE 608 -64 400 -64
WIRE -128 0 -176 0
WIRE 112 0 112 -144
WIRE 112 0 32 0
WIRE 176 0 112 0
WIRE 416 0 256 0
WIRE -176 16 -176 0
WIRE 32 48 32 0
WIRE -176 112 -176 96
WIRE 352 128 320 128
WIRE 112 144 112 0
WIRE 144 144 112 144
WIRE 608 160 608 -64
WIRE 608 160 320 160
WIRE 672 160 608 160
WIRE -32 176 -32 -64
WIRE 32 176 32 112
WIRE 32 176 -32 176
WIRE 144 176 32 176
WIRE 416 192 416 0
WIRE 416 192 320 192
WIRE 432 192 416 192
WIRE 608 192 608 160
WIRE 608 192 512 192
WIRE 144 208 80 208
WIRE 416 224 416 192
WIRE 144 240 112 240
WIRE 352 240 320 240
WIRE 112 272 112 240
WIRE 80 320 80 208
WIRE 352 320 352 240
WIRE 352 320 80 320
WIRE 416 320 416 304
FLAG 112 272 0
FLAG 352 128 VDD
FLAG 416 320 0
FLAG -176 112 0
FLAG -128 0 VDD
FLAG 672 160 P
IOPIN 672 160 Out
FLAG 656 -144 T
IOPIN 656 -144 Out
SYMBOL res 416 208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 154K
SYMBOL res 400 208 R0
SYMATTR InstName R2
SYMATTR Value 66.5K
SYMBOL res 160 16 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R3
SYMATTR Value 124K
SYMBOL res 304 -48 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 42.2K
SYMBOL cap 16 48 R0
SYMATTR InstName C1
SYMATTR Value 2200p
SYMBOL voltage -176 0 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5.0V
SYMBOL MAX9000 240 176 R0
SYMATTR InstName U1
TEXT -200 -128 Left 0 !.tran 0 10m 0 1u
TEXT -208 -168 Left 0 !.options gminsteps=0
TEXT -208 -200 Left 0 ;Skip gmin-stepping