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EVAL AD7747 Cap Gain Calibration

Question asked by MichaelFM on Apr 17, 2013
Latest reply on Apr 17, 2013 by seanbrown

Hello,

 

I am evaluating the AD7747 for a grounded capacitive sensor application. I am unsure what is the function of the Cap Gain Calibration.

 

From what I think it is used to increase the sensitivity of the sensor say if the range of my sensor is from 0 - 2pF then by adjusting the Cap Gain Calibration I could obtain larger sensitivity? I have tried using this feature in the software but the results do not seem to corroborate my theory!

 

Any insight welcome.


Thanks.

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