A3281ELT-T Allegro Microsystems Inc, A3281ELT-T Datasheet - Page 9

• Manufacturer Part Number: A3281ELT-T
• Description: IC SWITCH HALL EFFECT SOT-89
• Manufacturer: Allegro Microsystems Inc
• Type: Bipolar Latchr

Specifications of A3281ELT-T

• Sensing Range: 90G Trip, -90G Release
• Voltage - Supply: 4.2 V ~ 24 V
• Current - Supply: 8mA
• Current - Output (max): 25mA
• Output Type: Digital, Open Collector
• Features: Regulated Voltage
• Operating Temperature: -40°C ~ 85°C
• Package / Case: SOT-89-3
• Magnetic Type: Latch
• Operating Supply Voltage (min): 4.2V
• Operating Supply Voltage (typ): 5/9/12/15/18V
• Operating Supply Voltage (max): 24V
• Output Current: 25mA
• Mag Sensor Operate Point (g): 90Gs
• Mag Sensor Release Point (g): -90Gs
• Mag Sensor Hysteresis(g): 100Gs
• Package Type: SOT-89
• Pin Count: 3 +Tab
• Mounting: Surface Mount
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

be con nect ed (in close proximity to the Hall sensor) between the supply and ground of the device to reduce both external noise and
noise generated by the chopper-sta bi li za tion tech nique.
are possible.
• Hall-Effect IC Applications Guide, Application Note 27701;
• Guidelines for Designing Subassemblies Using Hall-Effect Devices, Application Note 27703.1
More detailed descriptions of the chopper-stabilized circuit operation can be found in:
• Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancelation, Technical Paper STP 97-10; and
• Chopper-Stabilized Amplifi ers With A Track-and-Hold Signal Demodulator, Technical Paper STP 99-1.
All are provided at
A3280, A3281
and
The sim plest form of magnet that will op er ate these devices is a ring magnet. Oth er meth ods of operation, such as linear magnets,
Extensive applications information for Hall-effect sensors is available in:
A3283
X
APPLICATIONS INFORMATION
www.allegromicro.com
Chopper-Stabilized, Precision
0.1 F
SUPPLY
Dwg. EH-013
OUTPUT
Hall-Effect Latches
SUPPLY
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
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