A3241EUA-T Allegro Microsystems Inc, A3241EUA-T Datasheet - Page 2
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A3241EUA-T
Manufacturer Part Number
A3241EUA-T
Description
IC SWITCH HALL EFFECT 3-SIP
Manufacturer
Allegro Microsystems Inc
Type
Unipolar Switchr
Specifications of A3241EUA-T
Sensing Range
135G Trip, 40G Release
Voltage - Supply
3.6 V ~ 24 V
Current - Supply
3.5mA
Output Type
Digital, Open Drain
Features
Regulated Voltage
Operating Temperature
-40°C ~ 85°C
Package / Case
3-SIP
Magnetic Type
Unipolar
Operating Supply Voltage (min)
3.6V
Operating Supply Voltage (typ)
5/9/12/15/18V
Operating Supply Voltage (max)
24V
Mag Sensor Operate Point (g)
135Gs
Mag Sensor Release Point (g)
40Gs
Mag Sensor Hysteresis(g)
25Gs
Package Type
Ultra Mini SIP
Pin Count
3
Mounting
Through Hole
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output (max)
-
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Features and Benefits
▪ Chopper stabilization
▪ Reverse battery protection
▪ Output short circuit protection
▪ Solid state reliability
▪ Small size
▪ Robust EMC capability
▪ High ESD ratings (HBM)
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Not to scale
A3241-DS, Rev. 16
▫ Superior temperature stability
▫ Extremely low switchpoint drift
▫ Insensitive to physical stress
VCC
Chopper-Stabilized Unipolar Hall-Effect Switches
Amp
Functional Block Diagram
Amp
Description
The A3241 and A3242 integrated circuits are unipolar Hall-
effect switches with digital outputs. These devices are suited
for operation over extended temperature ranges, up to +150°C.
Superior high-temperature performance is made possible
through an Allegro
which reduces the residual offset voltage normally caused
by device overmolding, temperature excursions, and thermal
stress.
The A3241 and A3242 Hall-effect switches include the
following on a single silicon chip: 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 is used to
take advantage of low-voltage requirements, component
matching, very low input-offset errors, and small component
geometries.
The integrated voltage regulator permits operation from 3.6 to
24 V. The unipolar family members operate with a sufficient
south polarity field only, turning off in the absence of such a
south polarity field.
Continued on the next page…
Regulator
To All Subcircuits
Current Limit
®
Control
patented dynamic offset cancellation,
A3241 and A3242
GND
<1Ω
VOUT