KMZ11B1 datasheet(5/8 Pages) PHILIPS

5 / 8 page

1996 Dec 11

Philips Semiconductors

Preliminary speciﬁcation

Magnetic ﬁeld sensor

KMZ11B1

Fig.4

Safe Operating Area (permissible disturbing

field Hd as a component of auxiliary field Hx).

In applications with Hx < 3 kA/m, the sensor has to be reset,

after leaving the SOAR, by an auxiliary field of Hx = 3 kA/m.

(1) Region of permissible operation.

(2) Permissible extension if Hy < 1 kA/m.

,,,,,,

MSA925

234

(kA/m)

safe operating

area

(1)

Hy > 1 kA/m

(2)

Hx (kA/m)

Fig.5

Relative sensitivity (ratio of sensitivity at

certain Hx and sensitivity at Hx = 3 kA/m).

In applications with Hx ≤ 3 kA/m, the sensor has to be

reset by an auxiliary field of Hx = 3 kA/m before use.

MSA924

234

S (H

S (3 kA/m)

Hx (kA/m)

Hx = 3 kA/m; Tamb =25 °C; Voffset =0.

Fig.6 Sensor output characteristics.

MSA926

012

(kA/m)

(mV/V)

max

typ

min

APPLICATION INFORMATION

The leadframe material is a copper alloy containing 2%

iron. In applications with magnetic fields outside the

specified operating range an increasing hysteresis effect

will arise due to magnetization effects in the leadframe.

However, in angular measurement applications of the

KMZ11B1 in combination with strong magnetic fields

H > 50 kA/m there is no additional hysteresis present.

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