KMZ11B1 データシートの表示（PDF） - Philips Electronics
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KMZ11B1 Datasheet PDF : 8 Pages
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Philips Semiconductors
Magnetic field sensor
Preliminary specification
KMZ11B1
20
,,,,,, Hd
,,,,,, (kA/m)
,,,,,,,,,,,, 10
Hx
Hy
Hd
MSA925
,,,,,,,,,,,,,,,,,, Hy > 1 kA/m
,,,,,, (2)
Hy > 1 kA/m
safe operating
area
(1)
0
0
1
2
3
4
5
Hx (kA/m)
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.
Fig.4 Safe Operating Area (permissible disturbing
field Hd as a component of auxiliary field Hx).
2
S (Hx)
S (3 kA/m)
1
MSA924
0
0
1
2
3
4
5
Hx (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.
Fig.5 Relative sensitivity (ratio of sensitivity at
certain Hx and sensitivity at Hx = 3 kA/m).
8
Vo
(mV/V)
4
0
max
typ
min
MSA926
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.
4
8
2
1
0
1
2
H y (kA/m)
Hx = 3 kA/m; Tamb = 25 °C; Voffset = 0.
Fig.6 Sensor output characteristics.
1996 Dec 11
5
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