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<DIV><FONT size=2></FONT><FONT size=2>Hi All,</FONT></DIV>
<DIV><FONT size=2>Using a mega8 with the ADC enabled selecting AVREF= internal
2.56vdc -</FONT></DIV>
<DIV><FONT size=2> Sampling rate at 125k, which is within the 20-200khz as
per atmel</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>-circuit -k</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2> Vcc=5v</FONT></DIV>
<DIV><FONT size=2> connected to</FONT></DIV>
<DIV><FONT size=2> AVCC via 10uH, </FONT></DIV>
<DIV><FONT size=2> connected with a 100nF cap to
GND (as per recomm atmel)</FONT></DIV>
<DIV><FONT size=2>&</FONT></DIV>
<DIV><FONT size=2> </FONT><FONT size=2>external cap 100nF poly
connected to Pin21 (AVREF) </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>I meassure 2.605Vdc on AVREF.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2> I expected to read 2.56Vdc......</FONT></DIV>
<DIV><FONT size=2>.........Using recently calibrated Fluke 77</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>I wonder whether this V-value on AVREF is in fact correct or
should it have been 2.56V?</FONT></DIV>
<DIV><FONT size=2> Maybe FLuke out on low V?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>hmmm... maybe one of you guys have had the same
experience or can point me to more reading/appl </FONT></DIV>
<DIV><FONT size=2>material.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>I really appreciate your feedback!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Regards,</FONT></DIV>
<DIV><FONT size=2>Gerhard
Laubscher
<BR></FONT><FONT size=2>TeleFax : +27-21-557 0160 Mobile : 082
366 1950<BR>email : <A
href="mailto:amsol@amssolutions.co.za">amsol@amssolutions.co.za</A>
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