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Ratiometric Linear Hall Effect Sensor
for High-Temperature Operation
A1321, A1322,
and A1323
7
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Typical Characteristics, continued
(30 pieces, 3 fabrication lots)
Average Absolute Quiescent Output Voltage, V
out(q)
, vs Temperature
V
cc
=5V
2.425
2.45
2.475
2.5
2.525
2.55
2.575
-40
-20
0
25
85
115
125
150
T
A
(°C)
V
out(q)
(V)
Average Absolute Sensitivity, Sens, vs Temperature
V
cc
=5V
2
2.5
3
3.5
4
4.5
5
5.5
6
-40
-20
0
25
85
115
125
150
T
A
(°C)
Sens (mV/G)
A1322
A1321
A1323
Average Delta Quiescent Output Voltage, V
out(q)(ΔT)
,
vs Temperature
Δ in
readings at each temperature are relative to 25°C
V
cc
=5V
-10
-8
-6
-4
-2
0
2
4
6
8
10
-40
-20
0
25
85
115
125
150
T
A
(°C)
V
out(q)(ΔT)
(G)
Quiescent Output Voltage, V
out(q)
,vsV
cc
T
A
=25°C
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
4.5 5 5.5
V
cc
(V)
V
out(q)
(V)
1321
1322
1323
Average Sensitivity, Sens, vs V
cc
T
A
= 25°C
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
4.5 5 5.5
V
cc
(V)
Sens (mV/G)
1321
1322
1323
Average Delta Sensitivity, ΔSens, vs Temperature
Δ in readings at each temperature are relative to 25°C
V
cc
=5V
-10
-8
-6
-4
-2
0
2
4
6
8
10
-40
-20
0
25
85
115
125
150
T
A
(°C)
ΔSens
(%)