US5881ESO Melexis Inc, US5881ESO Datasheet - Page 8
US5881ESO
Manufacturer Part Number
US5881ESO
Description
IC HALL EFFECT SW SOT-23
Manufacturer
Melexis Inc
Type
Unipolar Switchr
Specifications of US5881ESO
Rohs Status
RoHS non-compliant
Sensing Range
30mT Trip, 9.5mT Release
Voltage - Supply
3.5 V ~ 24 V
Current - Supply
5mA
Current - Output (max)
50mA
Output Type
Digital, Open Drain
Operating Temperature
-40°C ~ 85°C
Package / Case
SOT-23
Features
-
Other names
US5881ESOTR
Rotary Interrupt Switch
The interrupt switch can be incorporated in applications of speed or position sensing, generally of rotat-
ing objects. The Rotary Interrupt Switch, in Figure 6, uses a toothed ring to interrupt the magnetic field
reaching the Hall IC. When a solid piece of steel (ferrous vane) blocks the magnetic field, the switch turns
OFF. During the gaps, or spaces in the steel, the South magnetic pole turns ON the switch. This is the sys-
tem commonly used for automotive ignition and many industrial applications, where accurate position is
critical.
Figure 6, Rotary Interrupt Switch
Figure 6 uses a notched
interrupter on a rotating
shaft to activate the device.
Figure 6
S
N
A-10
Section 3 - Applications
3-6