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A1250LUA-T

Description
MAGNETIC FIELD SENSOR-HALL EFFECT, -2.5-2.5mT, 30-60mA, RECTANGULAR, THROUGH HOLE MOUNT
CategoryThe sensor   
File Size941KB,12 Pages
ManufacturerAllegro
Websitehttp://www.allegromicro.com/
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A1250LUA-T Overview

MAGNETIC FIELD SENSOR-HALL EFFECT, -2.5-2.5mT, 30-60mA, RECTANGULAR, THROUGH HOLE MOUNT

A1250LUA-T Parametric

Parameter NameAttribute value
Maximum supply voltage24 V
Minimum supply voltage3 V
Maximum operating temperature150 Cel
Minimum operating temperature-40 Cel
Maximum magnetic field range2.5 mT
Minimum magnetic field range-2.5 mT
Output current60000 mA
Processing package descriptionLEAD FREE, SIP-3
Lead-freeYes
EU RoHS regulationsYes
stateACTIVE
high5.26 mm
width1.52 mm
terminal coatingNOT SPECIFIED
Installation featuresTHROUGH HOLE MOUNT
Terminal typeSOLDER
Working current4 mA
type of packagingRECTANGULAR
length or diameter4.09 mm
lag10 mT
Output range30-60mA
Output typeCURRENT OUTPUT
sensor typeHALL EFFECT
A1250
Hall-Effect Latch / Bipolar Switch
FEATURES AND BENEFITS
AEC-Q100 automotive qualified
High-speed, 4-phase chopper stabilization
Low operating voltage down to 3 V
High sensitivity
Stable switchpoints
Robust EMC
DESCRIPTION
The A1250 Hall-effect sensor IC is a temperature-stable,
stress-resistant bipolar switch. This device is the most sensitive
Hall-effect device in the Allegro™ bipolar switch family and is
intended for ring-magnet sensing. Superior high-temperature
performance is made possible through an Allegro patented
dynamic offset cancellation that utilizes chopper stabilization.
This method reduces the offset voltage normally caused by
device overmolding, temperature dependencies, and thermal
stress.
The A1250 includes the following on a single silicon chip:
a voltage regulator, Hall-voltage generator, small-signal
amplifier, chopper stabilization, Schmitt trigger, and a short-
circuit-protected open-drain output. Advanced BiCMOS
wafer fabrication processing takes advantage of low-voltage
requirements, component matching, very low input-offset
errors, and small component geometries.
The A1250 Hall-effect bipolar switch turns on in a south
polarity magnetic field of sufficient strength and switches
off in a north polarity magnetic field of sufficient strength.
Because the output state is not defined if the magnetic field
is diminished or removed, to ensure that the device switches,
Allegro recommends using magnets of both polarities and of
sufficient strength in the application.
Packages:
3-Pin SOT23W
(suffix LH)
3-Pin SIP
(suffix UA)
Not to scale
The A1250 is rated for operation in the ambient temperature
Continued on the next page…
V+
Regulator
VCC
To All Subcircuits
Clock / Logic
Sample and Hold
Dynamic Offset
Cancellation
Low-Pass
Filter
Control
VOUT
Amp
Current
Limit
1Ω
GND
Functional Block Diagram
A1250-DS, Rev. 4

A1250LUA-T Related Products

A1250LUA-T A1250
Description MAGNETIC FIELD SENSOR-HALL EFFECT, -2.5-2.5mT, 30-60mA, RECTANGULAR, THROUGH HOLE MOUNT MAGNETIC FIELD SENSOR-HALL EFFECT, -2.5-2.5mT, 30-60mA, RECTANGULAR, SURFACE MOUNT
Maximum supply voltage 24 V 24 V
Minimum supply voltage 3 V 3 V
Maximum operating temperature 150 Cel 150 Cel
Minimum operating temperature -40 Cel -40 Cel
Maximum magnetic field range 2.5 mT 2.5 mT
Minimum magnetic field range -2.5 mT -2.5 mT
Output current 60000 mA 60000 mA
Processing package description LEAD FREE, SIP-3 LEAD FREE, SOT-23W, 3 PIN
Lead-free Yes Yes
EU RoHS regulations Yes Yes
state ACTIVE ACTIVE
high 5.26 mm 1 mm
width 1.52 mm 1.91 mm
terminal coating NOT SPECIFIED NOT SPECIFIED
Installation features THROUGH HOLE MOUNT SURFACE MOUNT
Terminal type SOLDER SOLDER
Working current 4 mA 4 mA
type of packaging RECTANGULAR RECTANGULAR
length or diameter 4.09 mm 2.98 mm
lag 10 mT 10 mT
Output range 30-60mA 30-60mA
Output type CURRENT OUTPUT CURRENT OUTPUT
sensor type HALL EFFECT HALL EFFECT
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