Hello,

I am using the EVAL-AD5933EBZ and I have a quick question regarding the AN-1252 documentation about measuring complex impedances.

On page 8, under the "Measuring a Complex Impedance" section it says

To measure complex impedance, refer to the conversion table (see Table 7) to calculate the maximum and minimum impedance based on the excitation frequency

What does "maximum and minimum impedance" refer to? The range to determine the calibration resistor value? Any help would be greatly appreciated. Thank you!

Best,

Anthony

Hi,

The maximum and minimum impedance indicates the range of impedance that can be measured by the system. From these values, you can compute the corresponding maximum and minimum capacitance or inductance range using Table 7 of AN-1252. As for the feedback and calibration resistors, there is a discussion on choosing the appropriate values for these resistors on page 5. of AN-1252.

Best regards,

Mark