A1220, A1221,
A1222, and A1223
Chopper Stabilized Precision Hall Effect Latches
ELECTRICAL CHARACTERISTICS Valid valid over full operating voltage and ambient temperature ranges; unless otherwise noted
Characteristics
Symbol
Test Conditions
Min. Typ.1 Max. Unit2
Electrical Characteristics
Forward Supply Voltage
Output Leakage Current
Output Saturation Voltage
Output Current Limit
Power-On Time3
Chopping Frequency
Output Rise Time3,4
Output Fall Time3,4
Supply Current
Reverse Supply Current
Supply Zener Clamp Voltage
Zener Impedance
Magnetic Characteristics
VCC
IOUTOFF
VOUT(SAT)
IOM
tPO
fC
tr
tf
ICC(ON)
ICC(OFF)
IRCC
VZ
IZ
Operating, TJ < 165°C
VOUT = 24 V, B < BRP
IOUT = 20 mA, B > BOP
B > BOP
VCC > 3.0 V, B < BRP(min) – 10 G,
B > BOP(max) + 10 G
RL = 820 Ω, CL = 20 pF
RL = 820 Ω, CL = 20 pF
B > BOP, VCC = 12 V
B < BRP, VCC = 12 V
VRCC = –30 V
ICC = 5 mA; TA = 25°C
ICC = 5 mA; TA = 25°C
3
–
24
V
–
–
10
μA
–
185
500
mV
30
–
60
mA
–
–
25
μs
–
800
–
kHz
–
0.2
2
μs
–
0.1
2
μs
–
–
4
mA
–
–
4
mA
–
–
–5
mA
28
–
–
V
–
50
–
Ω
A1220
5
22
40
G
Operate Point
A1221
BOP
A1222
15
50
90
G
70
110
150
G
A1223
100
150
180
G
A1220
–40
–23
–5
G
Release Point
A1221
BRP
A1222
–90
–50
–15
G
–150
–110
–70
G
A1223
–180
–150
–100
G
A1220
10
45
80
G
Hysteresis
BHYS
A1221
A1222 (BOP – BRP)
30
100
180
G
140
220
300
G
A1223
200
300
360
G
1Typical data are are at TA = 25°C and VCC = 12 V, and are for initial design estimations only.
21 G (gauss) = 0.1 mT (millitesla).
3Guaranteed by device design and characterization.
4CL = oscilloscope probe capacitance.
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com