FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE HIGH-SPEED UNIPOLAR DETECTION TYPE HALL IC

S-57A1 A Series

Seiko Instruments Inc.

9



Operation

1. Direction of applied magnetic flux

The S-57A1 A Series detects the magnetic flux density which is vertical to the marking surface.

Figure 10 shows the direction in which magnetic flux is being applied.

Marking surface

S

N

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.

1

Top view

2

3

0.7 mm (typ.)

The center of Hall sensor;

in this

φ 0.3 mm

Figure 11