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Author Topic: Maximun Aref  (Read 354 times)
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Kenosha, WI USA
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I have gotten nothing but great help from you guys on this board. smiley

Now I have another question to ask.  How high can I set AREF using analogReference(EXTERNAL)?  I have a pressure transducer that returns 1-11v when it sees 0-4000 psig. I don't intend to measure more then 2000 psig but would like to play it safe.

Thanks again in advance.   smiley-grin
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The AtMega datasheets says:

Quote
Absolute Maximum Ratings

Voltage on any Pin except RESET
with respect to Ground ................................-0.5V to VCC+0.5V
You can use a voltage divider on the transducer output however to bring the 0-11V down to the 0-5V safe range.
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