KMZ43T

Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will besuitable for the specified use without further testing or  modification.

The KMZ43T is a sensitive magnetic field sensor,  employing the magnetoresistive effect of thin-film permalloy. The sensor contains two galvanic separated Wheatstone bridges, at a relative angle of 45° to one  another.

A rotating magnetic field in the x-y plane will produce two independent sinusoidal output signals, one a function of +cos(2a) and the second a function of +sin(2a), a being the angle between sensor and field direction (see Fig.3).

Unlike the KMZ41(1), which needs a saturation field strength of 100 kA/m, the KMZ43T is suited to high precision angle measurement applications under low field conditions (saturation field strength 25 kA/m).

The sensor can be operated at any frequency between DC and 1 MHz.

The information in application notes AN00023 (Contactless Angle Measurement Using KMZ41 and UZZ9000) and AN00004 (Contactless Angle Measurement Using KMZ41 and UZZ9001) is applicable to the KMZ43T, but one should be aware of the difference in the bridge 1 output.