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A1147 Fiches technique(PDF) 3 Page - Allegro MicroSystems

No de pièce A1147
Description  Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
Download  13 Pages
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Fabricant  ALLEGRO [Allegro MicroSystems]
Site Internet  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A1147 Fiches technique(HTML) 3 Page - Allegro MicroSystems

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3
A1147-DS, Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1147 and A1148
ELECTRICAL CHARACTERISTICS over the operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage1
VCC
3.5
24
V
Supply Current2
ICCL
B > BOP for A1147; B < BRP for A1148
2
5
mA
ICCH
B > BOP for A1148; B < BRP for A1147
12
17
mA
Reverse Supply Current
IRCC
VRCC = –18 V
–1.6
mA
Supply Zener Clamp Voltage
VZSUPPLY ICC = ICCL(max) + 3 mA; TA = 25°C
28
40
V
Supply Zener Clamp Current3
IZSUPPLY
VZSUPPLY = 28 V
8
mA
Output Slew Rate4
di/dt
Capacitance of the oscilloscope performing
the measurement = 20 pF
36
mA/μs
Chopping Frequency
fC
200
kHz
Power-On Time5
ton
CBYPASS = 0.01 μF
––
25
μs
Power-On State6,7
POS
t < ton; VCC slew rate > 25 mV/μs
HIGH
1VCC represents the generated voltage between the VCC pin and the GND pin.
2Relative 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).
3IZSUPPLY(max) = ICCL(max) + 3 mA.
4Measured without bypass capacitor between VCC and GND. Use of a bypass capacitor results in slower current change.
5Measured with and without bypass capacitor of 0.01 μF. Adding a larger bypass capacitor causes longer Power-On Time.
6POS is defined as true only with a VCC slew rate of 25 mV/μs or greater. Operation with a VCC slew rate less than 25 mV/μs can permanently harm
device performance.
7POS is undefined for t > ton or BRP < B < BOP.
MAGNETIC CHARACTERISTICS over the operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.*
Max.
Units
Operate Point
BOP
A1147 ICC = ICCL
20
37
80
G
A1148 ICC = ICCH
Release Point
BRP
A1147 ICC = ICCH
10
22
60
G
A1148 ICC = ICCL
Hysteresis
BHYS
BHYS = BOP – BRP
515
30
G
*Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions, such as TA = 25°C and VCC = 12 V.
Performance may vary for individual units, within the specified maximum and minimum limits.


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