AVR-Chat

>When i used scope to check the output, i can see overshoot and undershoot
which are sometimes as big as the signal amplitude.

When was the last time you compensated your scope probes?  Do you have a
proper scope ground, ie. not a pigtail ground clip?

See Linear Tech. AN92 for one example:
http://cds.linear.com/docs/Application%20Note/an92f.pdf

Analog Devices has some good information in their seminar series of PDFs as
well,
on proper measurement techniques.


-- 
http://www.wearablesmartsensors.com/
http://www.softwaresafety.net/
http://www.designer-iii.com/
http://www.unusualresearch.com/


[Non-text portions of this message have been removed]