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ben-wpan/atusd/sim/cdiv.sch

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Improved clock stability by using a capacitative divider and found more minor issues. - atusd/ERRATA: work around the clock instability by replacing the resistive divider with a capacitative divider - atusd/ERRATA: a ground plane under the clock circuit would also be good to have - atusd/ERRATA: via near pin 1 is too close to the chip if we need to cut wires (in DIY boards) - atusd/sim/cdiv.sch: simulation of the capacitative divider
2010-09-09 18:35:47 +03:00
<Qucs Schematic 0.0.15>
<Properties>
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<Grid=10,10,1>
<DataSet=cdiv.dat>
<DataDisplay=cdiv.dpl>
<OpenDisplay=1>
<showFrame=0>
<FrameText0=Title>
<FrameText1=Drawn By:>
<FrameText2=Date:>
<FrameText3=Revision:>
</Properties>
<Symbol>
</Symbol>
<Components>
<GND * 1 220 400 0 0 0 0>
<GND * 1 100 400 0 0 0 0>
<Vrect V1 1 100 310 18 -26 0 1 "3.3 V" 1 "31 ns" 1 "31 ns" 1 "1 ns" 0 "1 ns" 0 "0 ns" 0>
<.DC DC1 1 120 40 0 36 0 0 "26.85" 0 "0.001" 0 "1 pA" 0 "1 uV" 0 "no" 0 "150" 0 "no" 0 "none" 0 "CroutLU" 0>
<.TR TR1 1 310 40 0 57 0 0 "lin" 1 "0" 1 "1 us" 1 "10000" 0 "Trapezoidal" 0 "2" 0 "1 ns" 0 "1e-16" 0 "150" 0 "0.001" 0 "1 pA" 0 "1 uV" 0 "26.85" 0 "1e-3" 0 "1e-6" 0 "1" 0 "CroutLU" 0 "no" 0 "yes" 0 "0" 0>
<C C1 1 220 350 17 -26 0 1 "220 pF" 1 "" 0 "neutral" 0>
<R R1 1 150 200 -26 15 0 0 "50 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
<C C2 1 220 250 17 -26 0 1 " 33 pF" 1 "" 0 "neutral" 0>
</Components>
<Wires>
<100 340 100 400 "" 0 0 0 "">
<220 280 220 320 "Vout" 250 270 17 "">
<220 380 220 400 "" 0 0 0 "">
<100 200 100 280 "" 0 0 0 "">
<100 200 120 200 "" 0 0 0 "">
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<220 200 220 220 "" 0 0 0 "">
</Wires>
<Diagrams>
<Rect 360 416 414 196 3 #c0c0c0 1 00 1 0 0.2 1 1 -0.1 0.5 1.1 1 -0.1 0.5 1.1 315 0 225 "" "" "">
<"Vout.Vt" #0000ff 0 3 0 0 0>
</Rect>
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<"V1.It" #0000ff 0 3 0 0 0>
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<Paintings>
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