High Precision Hall Effect AC-Coupled Differential
Sensor IC with Integrated Filter Capacitor
A1421, A1422,
and A1423
6
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Empirical Results
4.5
20.0
12.0
V
CC
 (V)
4.5
20.0
12.0
V
CC
 (V)
4.5
20.0
12.0
V
CC
 (V)
150
40
25
T
A
 (?/SPAN>C)
150
40
25
T
A
 (?/SPAN>C)
150
40
25
T
A
 (?/SPAN>C)
I
CC(OFF) 
by T
A
Ambient Temperature, T
A
 (篊)
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
50    0    50    100   150   200
Over V
CC
 Range
I
CC(OFF) 
by V
CC
Supply Voltage, V
CC
 (V)
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
5    10    15    20    25
Over T
A
 Range
I
CC(ON) 
by V
CC
Supply Voltage, V
CC
 (V)
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
5    10    15    20    25
Over T
A
 Range
Supply Voltage, V
CC
 (V)
0
5    10    15    20    25
I
CC(ON) 
by T
A
Ambient Temperature, T
A
 (篊)
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
50    0    50    100   150   200
Over V
CC
 Range
V
OUT(SAT) 
by T
A
Ambient Temperature, T
A
 (篊)
500
450
400
350
300
250
200
150
100
50
0
50    0    50    100   150   200
Over V
CC
 Range; I
SINK
 = 20 mA
V
OUT(SAT) 
by V
CC
500
450
400
350
300
250
200
150
100
50
0
Over T
A
 Range; I
SINK
 = 20 mA
Continued on next page.
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