US2881
Bipolar Hall Switch – Very High Sensitivity
Features and Benefits
Wide operating voltage range from 3.5V to 24V
Very high magnetic sensitivity
CMOS technology
Chopper-stabilized amplifier stage
Low current consumption
Open drain output
Thin SOT23 3L and flat TO-92 3L
both RoHS Compliant packages
Application Examples
Automotive, Consumer and Industrial
Solid-state switch
Brushless DC motor commutation
Speed detection
Linear position detection
Angular position detection
Proximity detection
Ordering Information
Part No.
US2881
US2881
US2881
US2881
Temperature Code
E (-40° to 85°
C
C)
E (-40° to 85°
C
C)
L (-40° to 150°C)
C
L (-40° to 150°C)
C
Package Code
SE (TSOT-3L)
UA (TO-92)
SE (TSOT-3L)
UA (TO-92)
1 Functional Diagram
2 General Description
The Melexis US2881 is a bipolar Hall-effect switch
designed in mixed signal CMOS technology.
The device integrates a voltage regulator, Hall
sensor with dynamic offset cancellation system,
Schmitt trigger and an open-drain output driver, all
in a single package.
Thanks to its wide operating voltage range and
extended choice of temperature range, it is
suitable for use in automotive and consumer
applications.
The device is delivered in a Thin Small Outline
Transistor (TSOT) for surface mount process and
in a Plastic Single In Line (TO-92 flat) for through-
hole mount.
Both 3-lead packages are RoHS compliant.
3901002881
Rev 012
Page 1 of 12
Data Sheet
Aug/06
MELEXIS [ Melexis Microelectronic Systems ]
