AD5933 datasheet(21/40 Pages) AD

21 / 40 page

Data Sheet

AD5933

Rev. E | Page 21 of 40

Once the magnitude of the impedance (|Z|) and the impedance

phase angle (ZØ, in radians) are correctly calculated, it is possible

to determine the magnitude of the real (resistive) and imaginary

(reactive) component of the impedance (ZUNKNOWN) by the

vector projection of the impedance magnitude onto the real

and imaginary impedance axis using the following formulas:

The real component is given by

|ZREAL| = |Z| × cos (ZØ)

The imaginary component is given by

|ZIMAG| = |Z| × sin (ZØ)

Table 7. Phase Angle

Real

Imaginary

Quadrant

Phase Angle

Positive

First

−

180

)

(

tan 1

Negative

Positive

Second

(

)













−

180

tan

180

Negative

Third

(

)













−

180

tan

180

Positive

Negative

Fourth

(

)













−

180

tan

360

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