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AD5933 as readout device for passive LC sensors???

Question asked by Walecki on Mar 3, 2014
Latest reply on May 27, 2015 by musach

Hi,

 

I would like to design readout electronics for passive humidity LC sensors. Is it possible to use wire (coil-antenna) connected as unknown impedance to the AD5933 and perform frequency sweep while coil impedance will be changed due the presence of LC circuit (resonant frequency in range 1-100 kHz) ? Do you have experience with similar design (attached picture)?

 

Regards,

John

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