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LDC1612: Complex impedance measurement possible?

Genius 12635 points
Part Number: LDC1612
Other Parts Discussed in Thread: LDC1101

Hello Team,

can I use the LDC1612 to measure the complex impedance (R+jwL) of an unknown inductor?

Thanks and Best Regards,

Hans

  • Hello Hans,

    The LDC1612 can't be used for this purpose. It can only provide L values based on the measured frequency of the LC tank.

    The LDC1101 can perform Rp + L measurements, which could be used to calculate Rs using the formula Rs = L/(Rp*C) as well as the L value of the inductor. However, because both measurements depend on the value of the sensor capacitor, the calculated Rs and L can only be as accurate as the error between the physical value of the capacitor and the nominal value. 

    In general, I wouldn't recommend using LDC devices to replace equipment like LCR meters, impedance analyzers, or network analyzers.

    Best Regards,