Version 4 SHEET 1 1040 680 WIRE -16 -112 -288 -112 WIRE 16 -112 -16 -112 WIRE 128 -112 96 -112 WIRE 832 -112 128 -112 WIRE 832 -80 832 -112 WIRE 832 32 832 0 WIRE 128 64 128 -112 WIRE 192 64 128 64 WIRE 576 64 416 64 WIRE 656 64 576 64 WIRE 704 64 656 64 WIRE -288 80 -288 -112 WIRE 16 128 -144 128 WIRE 128 128 96 128 WIRE 144 128 128 128 WIRE 192 128 144 128 WIRE 448 128 416 128 WIRE -144 160 -144 128 WIRE 576 160 576 64 WIRE 656 160 656 64 WIRE -16 192 -16 -112 WIRE 192 192 -16 192 WIRE 480 192 416 192 WIRE 128 208 128 128 WIRE -288 272 -288 160 WIRE -144 272 -144 240 WIRE 128 288 128 272 WIRE 576 288 576 240 WIRE 656 288 656 224 FLAG -288 272 0 FLAG 448 128 0 FLAG -144 272 0 FLAG -144 128 VCC FLAG 480 192 VCC FLAG 704 64 OUT IOPIN 704 64 Out FLAG 832 32 0 FLAG 576 288 0 FLAG -288 -112 VB1 FLAG 832 -112 VB2 FLAG 144 128 SGN FLAG 128 288 0 FLAG 656 288 0 SYMBOL Misc\\DIP8 304 160 R0 WINDOW 123 5 143 Center 2 SYMATTR Value2 MAX9928F SYMATTR InstName U1 SYMBOL res 0 -96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 0.1 SYMBOL voltage -288 64 R0 SYMATTR InstName VB SYMATTR Value 5 SYMBOL res 112 112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1Meg SYMBOL voltage -144 144 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 SYMATTR SpiceLine Rser=0 SYMATTR InstName VCC SYMATTR Value 5 SYMBOL current 832 -80 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 108 Left 2 SYMATTR InstName I1 SYMATTR Value PWL(0 -1 2 1) SYMBOL res 560 144 R0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL cap 112 208 R0 SYMATTR InstName C1 SYMATTR Value 1p SYMBOL cap 640 160 R0 SYMATTR InstName C2 SYMATTR Value 1p TEXT 760 152 Left 2 ;* Connections\n* 1 = RS-\n* 2 = SIGN\n* 3 = RS+\n* 4 = NC\n* 5 = NC\n* 6 = VCC\n* 7 = GND\n* 8 = OUT TEXT -304 336 Left 2 !.inc MAX9928F.FAM TEXT -304 376 Left 2 !.dc I1 -1 1 0.1 TEXT -304 416 Left 2 !.options gmin=1e-10 abstol=1e-10 gminsteps=0 srcsteps=0 cshunt=1e-17 TEXT -304 456 Left 2 ;.tran 0 2 0 10m TEXT -8 464 Left 4 ;Alternate Solver!\nTools -> Control Panel -> SPICE Solver:Alternate TEXT -304 496 Left 2 !.step VCC list 3.3 5