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S-57B1NSL1B-M3T1U Datasheet, PDF (10/20 Pages) Seiko Instruments Inc – UNIPOLAR DETECTION TYPE HALL IC
125°C OPERATION HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC
S-57B1 Series
Rev.3.0_00
 Operation
1. Direction of applied magnetic flux
This IC detects the magnetic flux density which is vertical to the marking surface.
The output voltage (VOUT) is inverted when the S pole is moved closer to the marking surface.
Figure 10 shows the direction in which magnetic flux is being applied.
N
S
Marking surface
Figure 10
2. Position of Hall sensor
Figure 11 shows the position of Hall sensor.
The center of this Hall sensor is located in the area indicated by a circle, which is in the center of a package as
described below.
The following also shows the distance (typ. value) between the marking surface and the chip surface of a package.
Top view
1
The center of Hall sensor;
in this φ 0.3 mm
2
3
0.7 mm typ.
Figure 11
10