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Visitor sreemoyee8
Visitor
7,713 Views
Registered: ‎01-09-2015

Analog voltage range for XADC

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Hi

 

Is is possible to measeure analog voltage as high as 12V (bipolar) using auxilliary inputs of 7 series xadc???

 

thanks

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Teacher muzaffer
Teacher
14,156 Views
Registered: ‎03-31-2012

Re: Analog voltage range for XADC

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No. The maximum input to VP/VN are 1.5V (including common mode over GNDADC) so you have to divide your input signal to get it to that range.

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Teacher muzaffer
Teacher
14,157 Views
Registered: ‎03-31-2012

Re: Analog voltage range for XADC

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No. The maximum input to VP/VN are 1.5V (including common mode over GNDADC) so you have to divide your input signal to get it to that range.

- Please mark the Answer as "Accept as solution" if information provided is helpful.
Give Kudos to a post which you think is helpful and reply oriented.

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Visitor hamidnaghi
Visitor
891 Views
Registered: ‎03-12-2018

Re: Analog voltage range for XADC

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Hi,

 

What's happen to the XADC if I use opamp that the output might goes up to 3 volts? Is hurt the XADC or it's just saturated?

 

Hamid

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Moderator
Moderator
883 Views
Registered: ‎04-18-2011

Re: Analog voltage range for XADC

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Hi Hamid,

Try not to reply to old threads to ask new questions. Instead make a new thread to ask your question.

To answer your question yes you will damage to the ADC
If you open the user guide ug480: there's a section on over and under voltage. Basically for auxio the max input is allowed to be vccadc+100mv
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