Go Down

Topic: Maximun Aref (Read 412 times) previous topic - next topic

lyft

I have gotten nothing but great help from you guys on this board. :)

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.   :D

BenF

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.

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy