S-5711A Datasheet, PDF (11/26 Pages) Seiko Instruments Inc – HALL IC

Rev.2.4_00
HALL IC
S-5711A Series
2. Basic operation
The S-5711A Series changes the output voltage level (V_OUT) according to the level of the magnetic flux density (north
or south pole) applied by a magnet.
The following explains the operation when the magnetism detection logic is active “L”.
(1) Products with detection of both poles
When the magnetic flux density vertical to the marking surface exceeds B_OPN or B_OPS after the south or north pole
of a magnet is moved closer to the marking surface of the S-5711A Series, V_OUT changes from “H” to “L”. When
the south or north pole of a magnet is moved further away from the marking surface of the S-5711A Series and
the magnetic flux density is lower than B_RPN or B_RPS, V_OUT changes from “L” to “H”.
(2) Products with detection of south pole
When the magnetic flux density vertical to the marking surface exceeds B_OPS after the south pole of a magnet is
moved closer to the marking surface of the S-5711A Series, V_OUT changes from “H” to “L”. When the south pole
of a magnet is moved further away from the marking surface of the S-5711A Series and the magnetic flux density
is lower than B_RPS, V_OUT changes from “L” to “H”.
(3) Products with detection of north pole^*1
When the magnetic flux density vertical to the marking surface exceeds B_OPN after the north pole of a magnet is
moved closer to the marking surface of the S-5711A Series, V_OUT changes from “H” to “L”. When the north pole
of a magnet is moved further away from the marking surface of the S-5711A Series and the magnetic flux density
is lower than B_RPN, V_OUT changes from “L” to “H”.
*1. Selectable by option
Seiko Instruments Inc.
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