1.

Product profile

1.1 General description

The KMZ41 is a sensitive magnetic field sensor, employing the magneto-resistive effect of

thin film permalloy. The sensor contains two galvanic separated Wheatstone bridges,

which enclose an angle of 45 degrees.

A rotating magnetic field strength > 40 kA/m (recommended field strength > 100 kA/m) in

the surface parallel to the chip (x-y plane) will deliver two independent sinusoidal output

signals, one following a cos(2

α) and the second following a sin(2α) function.

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

Application notes

AN00023 (contactless angle measurement using KMZ41 and UZZ9000)

and

AN00004 (contactless angle measurement using KMZ41 and UZZ9001) are

available.

1.2 Features

1.3 Quick reference data

[1]

Applicable for bridge 1 and bridge 2.

[2]

Bridge resistance between pin 4 to pin 8, pin 3 to pin 7, pin 5 to pin 1 and pin 6 to pin 2.

KMZ41

Magnetic field sensor

Rev. 05 — 27 November 2006

Product data sheet

Table 1.

Quick reference data

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

supply voltage

[1] -

59V

peak voltage

see Figure 2

[1] 70

78

86

mV

offset voltage

per supply voltage;

see Figure 2

[1]

−2

-

+2

mV/V

bridge resistance

[1][2] 2.0

2.5

3.0

k

Ω