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An issue about AD7151

Question asked by hpkamen on Jul 14, 2015
Latest reply on Jul 16, 2015 by CodeFarmer

Hi,

 

I encountered a strange problem while using AD7151 as a capacitance sensor in my current smart hardware design.

 

AD7151 suffers from serious reading drifting in a specific circumstance where the capacitance should be fixed, but is reported as continuously and slowly increasing (data register increments by one every approximately 5 minutes.)

 

I wonder if this is normal and what can  I do to stress this drifting problem.

 

Hopefully I made myself clear and feel free to ask me about the configurations of the chip and other design details.

 

Any comment is appreciated.

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