A3241 and A3242
Chopper-Stabilized Unipolar Hall Effect Switches
OPERATING CHARACTERISTICS valid over full operating voltage and ambient temperature ranges, unless otherwise noted
Characteristic
Symbol
Test Conditions
Min. Typ. Max. Units
Electrical Characteristics
Supply Voltage1
Output Leakage Current
Output On Voltage
Output Current Limit
Power-On Time
Chopping Frequency
Output Rise Time2
Output Fall Time2
Supply Current
Reverse Battery Current
Supply Zener Clamp Voltage
Supply Zener Current3
Magnetic Characteristics4
VCC
IOUTOFF
VOUT(SAT)
IOM
tPO
fc
tr
tf
ICCON
ICCOFF
IRCC
VZSupply
IZSupply
Operating, TJ < 165°C
VOUT = 24 V, B < BRP
IOUT = 20 mA, B > BOP
B > BOP
VCC > VCC(MIN)
RLOAD = 820 Ω, CS = 20 pF
RLOAD = 820 Ω, CS = 20 pF
B > BOP
B < BRP
VRCC = –18 V
ICC = 6.5 mA; TA = 25°C
VS = 28 V
3.6
–
24
V
–
–
10
μA
–
–
500 mV
30
–
60 mA
–
–
50
μs
–
200
–
kHz
–
–
1
μs
–
–
1
μs
–
1.5 3.5 mA
–
1.5 3.5 mA
–
–
–2 mA
28
–
–
V
–
–
6.5 mA
Operate Point
A3241
BOP
A3242
50
95 135
G
120 150 200
G
Release Point
A3241
BRP
A3242
40
70 110
G
110 125 190
G
Hysteresis
BHYS
A3241
A3242
BOP – BRP
10
25
42
G
10
25
40
G
1 Maximum voltage must be adjusted for power dissipation and junction temperature, see Power Derating section.
2 CS = oscilloscope probe capacitance.
3 Maximum current limit is equal to the maximum ICC(MAX) + 3 mA.
4 Magnetic flux density, B, is indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity magnetic fields.
This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the field is indicated
by the absolute value of B, and the sign indicates the polarity of the field (for example, a –100 G field and a 100 G field have equivalent strength, but
opposite polarity).
DEVICE QUALIFICATION PROGRAM
Contact Allegro for information.
EMC (Electromagnetic Compatibility) REQUIREMENTS
Contact Allegro for information.
A3241-DS, Rev. 2
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com