A1225, A1227
and A1229
Hall Effect Latch for High Temperature Operation
A1227 Magnetic Characteristics
Operate Point versus Ambient Temperature
Operate Point versus Supply Voltage
175
163
150
138
125
113
100
88
175
163
150
138
125
113
100
88
TA (°C)
VCC (V)
–40
25
3.8
12
24
150
75
75
63
63
50
50
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
2
2
2
6
10
14
18
22
26
26
26
VCC (V)
Release Point versus Ambient Temperature
Release Point versus Supply Voltage
-50
-63
-50
-63
-75
-75
-88
-88
VCC (V)
-100
-113
-125
-138
-150
-163
-175
-100
-113
-125
-138
-150
-163
-175
TA (°C)
3.8
12
24
–40
25
150
6
10
14
18
22
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
V
CC (V)
Switchpoint Hysteresis versus Supply Voltage
Switchpoint Hysteresis versus Ambient Temperature
350
325
300
275
250
225
200
175
150
125
100
350
325
300
275
250
225
200
175
150
125
TA (°C)
VCC (V)
–40
25
3.8
12
24
150
100
-60 -40 -20
0
20 40 60 80 100 120 140 160
TA (°C)
6
10
14
18
22
V
CC (V)
Allegro MicroSystems, Inc.
115 Northeast Cutoff
7
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
SANKEN [ SANKEN ELECTRIC ]
