A3230LUA Allegro Microsystems Inc, A3230LUA Datasheet - Page 2
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A3230LUA
Manufacturer Part Number
A3230LUA
Description
IC SWITCH HALL EFFECT 3-SIP
Manufacturer
Allegro Microsystems Inc
Type
Bipolar Latchr
Datasheet
1.A3230EUA.pdf
(13 pages)
Specifications of A3230LUA
Sensing Range
25G Trip, -25G Release
Voltage - Supply
3.6 V ~ 24 V
Current - Supply
3.5mA
Current - Output (max)
60mA
Output Type
Digital, Open Drain
Features
Regulated Voltage
Operating Temperature
-40°C ~ 150°C
Package / Case
3-SIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-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
3230-DS, Rev. 6
▫ Superior temperature stability
▫ Extremely low switchpoint drift
▫ Insensitive to physical stress
VCC
Chopper-Stabilized Hall-Effect Bipolar Switch
Functional Block Diagram
Amp
Description
The A3230 Hall-effect sensor IC is a temperature stable,
stress-resistant bipolar switch. This device is the most sensitive
Hall-effect device in the Allegro
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 A3230 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 A3230 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
Continued on the next page…
Regulator
To All Subcircuits
Current Limit
Control
GND
<1Ω
®
bipolar switch family and is
VOUT
A3230