Ratiometric Linear Hall Effect Sensor ICs
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
(30 pieces, 3 fabrication lots)
Average Supply Current (I
CC
) vs Temperature
Vcc = 5 V
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
-40
-20
0
25
85
115
125
150
T
A
(°C)
I
CC
(mA)
Average Positive Linearity (Lin+) vs Temperature
V
cc
= 5 V
95
96
97
98
99
100
101
102
103
104
105
-40
-20
0
25
85
115
125
150
T
A
(°C)
Lin+
(
%
)
Average Negative Linearity (Lin–) vs Temperature
V
cc
= 5 V
95
96
97
98
99
100
101
102
103
104
105
-4
0
-2
0
0
25
85
11
5
12
5
15
0
T
A
(°C)
Lin
–
(%
)
Average Ratiometry, V
OUT(q)(
Δ
V)
vs Temperature
99
99.2
99.4
99.6
99.8
100
100.2
100.4
100.6
100.8
101
-40
-20
0
25
85
115
125
150
T
A
(°C)
Ratiometry (%
)
4.5 to 5.0 V
5.5 to 5.0 V
Average Ratiometry,
Δ
Sens
(
Δ
V),
vs Temperature
99
99.2
99.4
99.6
99.8
100
100.2
100.4
100.6
100.8
101
-40
-20
0
25
85
115
125
150
T
A
(°C)
Ratiometry (%
)
4.5 to 5.0V
5.5 to 5.0V
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