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| 型號(hào)： | A1140LUATI-T4 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| 中文描述： | 敏感的兩線斬波穩(wěn)定單極霍爾效應(yīng)開(kāi)關(guān) |
| 文件頁(yè)數(shù)： | 4/13頁(yè) |
| 文件大小： | 354K |
| 代理商： | A1140LUATI-T4 |
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Sensitive Two-Wire Chopper-Stabilized
Unipolar Hall Effect Switches
A1140, A1141,
A1142, and A1143
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ELECTRICAL CHARACTERISTICS
over the operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage
1
V
CC
3.5
–
24
V
Supply Current
2
I
CC(L)
B>B
OP
for A1140; B<B
RP
for A1141
2
–
5
mA
B>B
OP
for A1142; B<B
RP
for A1143
5
-–
6.9
mA
I
CC(H)
B>B
OP
for A1141, A1143
B<B
RP
for A1140, A1142
12
-–
17
mA
Reverse Supply Current
I
RCC
V
RCC
= –18 V
–
–
–1.6
mA
Supply Zener Clamp Voltage
V
ZSUPPLY
I
CC
= I
CC(L)(max)
+ 3 mA; T
A
= 25°C
28
–
40
V
Supply Zener Clamp Current
I
ZSUPPLY
V
ZSUPPLY
= 28 V
–
–
I
CC(L)(max)
+ 3 mA
mA
Output Slew Rate
3
di/dt
Capacitance of the oscilloscope performing the
measurement = 20 pF
–
36
–
mA/
μ
s
Chopping Frequency
f
C
–
200
–
kHz
Power-On Time
3
t
on
C
BYPASS
= 0.01
μ
F
–
–
25
μ
s
Power-On State
5,6
POS
t < t
on
;
V
CC
slew rate > 25 mV/
μ
s
–
HIGH
–
–
1
V
CC
represents the generated voltage between the VCC pin and the GND pin.
2
Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic
polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present).
3
Measured without bypass capacitor between VCC and GND. Use of a bypass capacitor results in slower current change.
3
Measured with and without bypass capacitor of 0.01
μ
F. Adding a larger bypass capacitor causes longer Power-On Time.
5
POS is defined as true only with a V
CC
slew rate of 25 mV /
μ
s or greater. Operation with a V
CC
slew rate less than 25 mV /
μ
s can permanently harm
device performance.
6
POS is undefined for t > t
on
or B
RP
< B < B
OP
.
MAGNETIC CHARACTERISTICS
over the operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.*
Max.
Units
Operate Point
B
OP
A1140, A1142
I
CC
= I
CC(L)
50
80
110
G
A1141, A1143
I
CC
= I
CC(H)
Release Point
B
RP
A1140, A1142
I
CC
= I
CC(H)
45
65
105
G
A1141, A1143
I
CC
= I
CC(L)
Hysteresis
B
HYS
B
HYS
= B
OP
– B
RP
5
15
30
G
*Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions, such as T
A
= 25°C and V
CC
= 12 V.
Performance may vary for individual units, within the specified maximum and minimum limits.
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