I am working with IC Ad5933 to measure impedance.I connected AD5933 with Arduino through I2C communication and have measured impedance of the resistor but it gives wrong answer. RFB=1 k ohm and RCAL=3 k ohm
it gives wrong answer
How wrong is the answer? The usual procedure is to connect known resistor Rcal, collect Re and Im data, from those two calculate system gain G, connect "unknown" resistor, collect Re and Im, from those and G calculate the value of the unknown resistor. If you could post all the values form these steps it will be possible to try and figure out what went wrong.
What were the parameters programmed into the AD5933? At the minimum: operating frequency, excitation voltage, PGA gain, Number of Settling Cycles?