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How to use ADC which has negative and positive input

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letan

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I have a ADC, which has two input(negative and positive). Can I put negative voltage at negative input and ground at positive input?.
Thanks.

Added after 1 minutes:

How to change negative voltage to positive voltage?
 

LiuKang

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Re: How to use ADC?

Hi. They must be differential inputs to eleminate parasitic effects. So it seems to be possible measuring its absolute value.

You can use opamp to invert it anyway. Research it. :wink:
 

watersky

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How to use ADC?

negative voltage? can your circuit work normal when negative voltage is as input?
 

A.Anand Srinivasan

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Re: How to use ADC?

please post your ADC IC number so that we can have an idea on what you are actually talking about....
 

betty1007

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How to use ADC?

please post your ADC
 

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