A1225, A1227
and A1229
Hall Effect Latch for High Temperature Operation
A1229 Magnetic Characteristics
Operate Point versus Ambient Temperature
Operate Point versus Supply Voltage
200
190
180
170
160
150
140
130
120
110
100
90
200
190
180
170
160
150
140
130
120
110
100
90
TA (°C)
VCC (V)
–40
25
3.8
12
24
150
80
80
-60 -40 -20
0
20 40 60 80 100 120 140
TA (°C)
2
6
10
14
18
22
26
VCC (V)
Release Point versus Ambient Temperature
Release Point versus Supply Voltage
-
-
80
90
-
-
80
90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
-200
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
-200
VCC (V)
TA (°C)
3.8
12
24
–40
25
150
-60 -40 -20
0
20 40 60 80 100 120 140
TA (°C)
2
6
10
14
18
22
26
V
CC (V)
Switchpoint Hysteresis versus Supply Voltage
Switchpoint Hysteresis versus Ambient Temperature
400
380
360
340
320
300
280
260
240
220
200
180
160
400
380
360
340
320
300
280
260
240
220
200
180
160
TA (°C)
VCC (V)
–40
25
3.8
12
24
150
2
6
10
14
18
22
26
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
V
CC (V)
Allegro MicroSystems, Inc.
115 Northeast Cutoff
8
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
SANKEN [ SANKEN ELECTRIC ]
