AVR-Chat

At 06:04 PM 6/13/2007 -0700, mago Umandam wrote:
>Yes, what i need ti accuray. Well, i opted higher resolution since the 
>voltage im measuring is of high range  0-80 V. i assume higher resolution 
>will give better accuracy.

Bad assumption.  To get higher accuracy you need a lot more than higher 
resolution.  To get 16 bit accuracy you need to get your noise, sensor 
accuracy, reference voltage and probably power supply stability to better 
than 1 part in 65536.  This is a non trivial exercise.

If you can define what you actually need a little better perhaps an easier 
approach can be suggested.  For instance do you really need to cover the 
full 0-80 or perhaps a subrange? would a log scale work?

Robert

http://www.aeolusdevelopment.com/

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