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PDF A3282 Data sheet ( Hoja de datos )
| Número de pieza | A3282 | |
| Descripción | Chopper-Stabilized Hall Effect Latch | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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A3282
Chopper-Stabilized Hall-Effect Latch
Features and Benefits
▪ Chopper stabilization
Description
The A3282 Hall-effect sensor is a temperature stable, stress-
▫ Superior temperature stability
▫ Extremely low switchpoint drift
resistant latch. Superior high-temperature performance
is made possible through an Allegro® patented dynamic
▫ Insensitive to physical stress
offset cancellation that utilizes chopper-stabilization. This
▪ Reverse battery protection
method reduces the offset voltage normally caused by device
▪ Output short circuit protection
overmolding, temperature dependencies, and thermal stress.
▪ Solid state reliability
TheA3282 complements the currentAllegro family of chopper-
▪ Small size
stabilized latching sensors.
▪ Robust EMC capability
▪ High ESD ratings (HBM)
The A3282 includes 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
Packages: 3 pin SOT23W (suffix LH), and errors, and small component geometries.
3 pin SIP (suffix UA)
This device requires the presence of both south and north
polarity magnetic fields for operation. In the presence of a
south polarity field of sufficient strength, the device output
latches on, and only switches off when a north polarity field
www.DataSheeto4Uf.cosmufficient strength is present.
Not to scale
Continued on the next page…
Functional Block Diagram
VCC
Amp
Regulator
To All Subcircuits
Control
Current Limit
VOUT
<1Ω
A3282-DS, Rev. 3
GND
1 page  
A3282
Chopper-Stabilized Hall Effect Latch
Magnetic Characteristic Data
Operate Point versus Ambient Temperature
150
140
130
120
110
100
90
80
79
–50
VCC (V)
24
3.8
0 50 100 150
TA (°C)
Release Point versus Ambient Temperature
-70
-80
-90
-100
-110
-120
-130
-140
-150
–50
VCC (V)
24
3.8
0 50 100 150
TA (°C)
Hysteresis versus Ambient Temperature
300
280
260
240
220
200
180
160
140
–50
VCC (V)
24
3.8
0 50 100
TA (°C)
150
150
140
130
120
110
100
90
80
79
0
-70
-80
-90
-100
-110
-120
-130
-140
-150
0
300
280
260
240
220
200
180
160
140
0
Operate Point versus Supply Voltage
5 10 15 20
VCC (V)
Release Point versus Supply Voltage
5 10 15 20
VCC (V)
Hysteresis versus Supply Voltage
5 10 15 20
VCC (V)
TA (°C)
–40
25
150
25
TA (°C)
–40
25
150
25
TA (°C)
–40
25
150
25
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
5 Page 
A3282
Chopper-Stabilized Hall Effect Latch
Package UA, 3-Pin SIP
.164 4.17
.159 4.04
.122 3.10
.117 2.97
D 2.04 .0805
NOM
.0565 1.44
NOM D
.085 2.16
MAX
A
.062 1.57
.058 1.47
D
B
.031 0.79
REF
C
.640 16.26
.600 15.24
.017 0.44
.014 0.35
12 3
.019 0.48
.014 0.36
.050 1.27
NOM
Dimensions in inches
Metric dimensions (mm) in brackets, for reference only
A Dambar removal protrusion (6X)
B Ejector mark on opposite side
C Active Area Depth .0195 [0.50] NOM
D Hall element (not to scale)
The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889;
5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to
permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that
the information being relied upon is current.
Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its
use; nor for any infringement of patents or other rights of third parties which may result from its use.
Copyright © 2005, 2006 Allegro MicroSystems, Inc.
Allegro MicroSystems, Inc.
11
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet A3282.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| A3280LH | CHOPPER-STABILIZED/ PRECISION HALL-EFFECT LATCHES | Allegro MicroSystems |
| A3280LT | CHOPPER-STABILIZED/ PRECISION HALL-EFFECT LATCHES | Allegro MicroSystems |
| A3280UA | CHOPPER-STABILIZED/ PRECISION HALL-EFFECT LATCHES | Allegro MicroSystems |
| A3280UA-TL | CHOPPER-STABILIZED/ PRECISION HALL-EFFECT LATCHES | Allegro MicroSystems |
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