US4881
Bipolar Hall Switch
Low Voltage & Very High Sensitivity
Features and Benefits
Operating voltage range from 2.2V to 18V
Very high magnetic sensitivity
CMOS technology
Chopper-stabilized amplifier stage
Low current consumption
Open drain output
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.
US4881
US4881
US4881
US4881
US4881
US4881
Temperature Code
E (-40° to 85°
C
C)
E (-40° to 85°
C
C)
K (-40° to 125°
C
C)
K (-40° to 125°
C
C)
L (-40° to 150°C)
C
L (-40° to 150°C)
C
Package Code
SO (SOT23-3L)
UA (TO-92)
SO (SOT23-3L)
UA (TO-92)
SO (SOT23-3L)
UA (TO-92)
1 Functional Diagram
2 General Description
The Melexis US4881 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.
The low operating voltage and extended choice of
temperature range make it suitable for use in
automotive, industrial and consumer low voltage
applications.
The devices are delivered in a Small Outline
Transistor (SOT23) 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.
3901004881
Rev 011
Page 1 of 11
Data Sheet
Feb/06
MELEXIS [ Melexis Microelectronic Systems ]
