Philips Semiconductors
Magnetic field sensor
Product specification
KMZ10B
20
,,,,,, Hd
,,,,,, (kA/m)
,,,,,,,,,,,, 10
Hx
Hy
Hd
MGD802
,,,,,,,,,,,,,,,,,, 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
MGD803
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 using.
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
4
8
2
1
0
1
2
H y (kA/m)
VB = constant; Hx = 3 kA/m; Tamb = 25 °C; Voffset = 0.
Fig.6 Sensor output characteristics.
1998 Mar 31
5