US1881
Hall Latch – High Sensitivity
Features and Benefits
Wide operating voltage range from 3.5V to 24V
High magnetic sensitivity – Multi-purpose
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.
US1881
US1881
US1881
US1881
US1881
US1881
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
SE (TSOT-3L)
UA (TO-92)
SE (TSOT-3L)
UA (TO-92)
SE (TSOT-3L)
UA (TO-92)
1 Functional Diagram
2 General Description
The Melexis US1881 is a Hall-effect latch
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 quite
suitable for use in automotive, industrial 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.
3901001881
Rev 015
Page 1 of 12
Data Sheet
Jan/06
MELEXIS [ Melexis Microelectronic Systems ]
