a3242lua Allegro MicroSystems, Inc., a3242lua Datasheet - Page 3

• Manufacturer Part Number: a3242lua
• Description: A3241 And A3242 Chopper-stabilized Unipolar Hall-effect Switches
• Manufacturer: Allegro MicroSystems, Inc.

A3241
A3242
OPERATING CHARACTERISTICS valid over full operating voltage and ambient temperature ranges, unless otherwise noted
Electrical Characteristics
Supply Voltage
Output Leakage Current
Output On Voltage
Output Current Limit
Power-On Time
Chopping Frequency
Output Rise Time
Output Fall Time
Supply Current
Reverse Battery Current
Supply Zener Clamp Voltage
Supply Zener Current
Magnetic Characteristics
1
2
3
4
This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the fi eld is indicated
by the absolute value of B, and the sign indicates the polarity of the fi eld (for example, a –100 G fi eld and a 100 G fi eld have equivalent strength, but
opposite polarity).
Operate Point
Release Point
Hysteresis
Maximum voltage must be adjusted for power dissipation and junction temperature, see Power Derating section.
C
Maximum current limit is equal to the maximum I
Magnetic fl ux density, B, is indicated as a negative value for north-polarity magnetic fi elds, and as a positive value for south-polarity magnetic fi elds.
S
= oscilloscope probe capacitance.
Characteristic
and
1
2
2
3
4
Chopper-Stabilized Unipolar Hall Effect Switches
V
Symbol
V
I
I
I
OUTOFF
OUT(SAT)
I
ZSupply
EMC (Electromagnetic Compatibility) REQUIREMENTS
CCOFF
B
ZSupply
CCON
I
V
B
B
I
t
RCC
OM
PO
HYS
f
CC
t
t
OP
RP
c
r
f
CC(MAX)
DEVICE QUALIFICATION PROGRAM
Operating, T
V
I
B > B
V
R
R
B > B
B < B
V
I
V
OUT
CC
OUT
CC
RCC
S
LOAD
LOAD
A3241
A3242
A3241
A3242
A3241
A3242
= 28 V
Contact Allegro for information.
Contact Allegro for information.
= 6.5 mA; T
+ 3 mA.
> V
= 20 mA, B > B
= 24 V, B < B
OP
OP
RP
= –18 V
= 820 Ω, C
= 820 Ω, C
CC(MIN)
J
B
< 165°C
OP
A
= 25°C
Test Conditions
S
S
– B
RP
OP
= 20 pF
= 20 pF
RP
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Min.
120
110
3.6
30
28
50
40
10
10
–
–
–
–
–
–
–
–
–
–
Typ.
200
150
125
1.5
1.5
95
70
25
25
–
–
–
–
–
–
–
–
–
–
Max.
500
135
200
190
110
3.5
3.5
6.5
24
60
42
40
10
50
–2
–
1
1
–
Units
kHz
mV
mA
mA
mA
mA
mA
μA
μs
μs
μs
V
V
G
G
G
G
G
G
3