A1225, A1227
and A1229
Hall Effect Latch for High Temperature Operation
A1225 Magnetic Characteristics
Operate Point versus Ambient Temperature
Operate Point versus Supply Voltage
300
280
260
240
220
200
180
160
140
300
280
260
240
220
200
180
160
140
TA (°C)
VCC (V)
–40
25
3.8
12
24
150
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
2
2
2
6
10
14
18
22
26
VCC (V)
Release Point versus Ambient Temperature
Release Point versus Supply Voltage
-140
-160
-180
-200
-220
-240
-260
-280
-300
-140
-160
-180
-200
-220
-240
-260
-280
-300
TA (°C)
VCC (V)
–40
25
3.8
12
24
150
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
6
10
14
18
22
V
CC (V)
Switchpoint Hysteresis versus Supply Voltage
Switchpoint Hysteresis versus Ambient Temperature
600
560
520
480
440
400
360
320
280
600
560
520
480
440
400
360
320
280
VCC (V)
TA (°C)
3.8
12
24
–40
25
150
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
6
10
14
18
22
26
V
CC (V)
Allegro MicroSystems, Inc.
115 Northeast Cutoff
6
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
SANKEN [ SANKEN ELECTRIC ]
