S-5711A Datasheet, PDF (10/26 Pages) Seiko Instruments Inc – HALL IC

HALL IC
S-5711A Series
Rev.2.4_00
„ Operation
1. Direction of applied magnetic flux and position of Hall sensor
The S-5711A Series detects the flux density which is vertical to the marking surface.
In products with detection of both poles, the output voltage (V_OUT) is inverted when the south or north pole is moved
closer to the marking surface.
In products with detection of the south pole, the output voltage (V_OUT) is inverted when the south pole is moved closer to
the marking surface.
In products with detection of the north pole, the output voltage (V_OUT) is inverted when the north pole is moved closer to
the marking surface.
Figures 10 and 11 show the direction in which magnetic flux is being applied.
(1) SNT-4A
(2) SOT-23-3
N
S
Marking surface
N
S
Marking surface
Figure 10
Figure 11
Figures 12 and 13 show 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) SNT-4A
Top view
1
The center of Hall sensor;
in this φ 0.3 mm
4
(2) SOT-23-3
Top view
1
The center of Hall sensor;
in this φ 0.3 mm
2
3
0.16 mm (typ.)
2
3
0.7 mm (typ.)
Figure 12
10
Figure 13
Seiko Instruments Inc.