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A3134U PDF даташит

Спецификация A3134U изготовлена ​​​​«Allegro MicroSystems» и имеет функцию, называемую «BIPOLAR HALL-EFFECT SWITCH FOR HIGH-TEMPERATURE OPERATION».

Детали детали

Номер произв A3134U
Описание BIPOLAR HALL-EFFECT SWITCH FOR HIGH-TEMPERATURE OPERATION
Производители Allegro MicroSystems
логотип Allegro MicroSystems логотип 

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A3134U Даташит, Описание, Даташиты
3134
BIPOLAR HALL-EFFECT SWITCH
FOR HIGH-TEMPERATURE OPERATION
V
CC
12
3
Dwg. PH-003A
Pinning is shown viewed from branded side.
This low-hysteresis bipolar Hall-effect switch is an extremely
temperature-stable and stress-resistant sensor especially suited for
operation over extended temperature ranges to +150°C. Superior
high-temperature performance is made possible through a novel Schmitt
trigger circuit that maintains operate and release point stability by
compensating for temperature changes in the Hall element. Additionally,
internal compensation provides magnetic switch points that become more
sensitive with temperature, hence offsetting the usual degradation of the
magnetic field with temperature. Its low hysteresis makes this device
ideal for detecting small changes in magnetic field strength or for use
with inexpensive magnets.
The device includes on a single silicon chip a voltage regulator,
quadratic Hall-voltage generator, temperature compensation circuit,
signal amplifier, Schmitt trigger, and a buffered open-collector output to
sink up to 25 mA. The on-board regulator permits operation with supply
voltages of 4.5 volts to 24 volts.
The first character of the part number suffix determines the device
operating temperature range. Suffix ‘E–’ is for -40°C to +85°C, and
suffix ‘L–’ is -40°C to +150°C. Two package styles provide a magneti-
cally optimized package for most applications. Suffix ‘–LT’ is a minia-
ture SOT89/TO-243AA transistor package for surface-mount applica-
tions while suffix ‘–UA’ is a three-lead ultra-mini-SIP.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC ............................. 30 V
Reverse Battery Voltage, VRCC .......... -30 V
Magnetic Flux Density, B .......... Unlimited
Output OFF Voltage, VOUT .................. 30 V
Reverse Output Voltage, VOUT ........... -0.5 V
Continuous Output Current,
IOUT ............................................ 25 mA
Operating Temperature Range, TA
Suffix ‘E–’ .................. -40°C to +85°C
Suffix ‘L–’ ................ -40°C to +150°C
Storage Temperature Range,
TS .............................. -65°C to +170°C
FEATURES
s Superior Temperature Stability
s Operation From Unregulated Supply
s Open-Collector 25 mA Output
s Reverse Battery Protection
s Activate With Small, Commercially Available Permanent Magnets
s Solid-State Reliability
s Small Size
s Resistant to Physical Stress
Always order by complete part number, e.g., A3134ELT .









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A3134U Даташит, Описание, Даташиты
3134
LOW-HYSTERESIS
BIPOLAR HALL-EFFECT SWITCH
FOR HIGH-TEMP. OPERATION
FUNCTIONAL BLOCK DIAGRAM
1 VCC
REG.
X 3 OUTPUT
2 GROUND
Dwg. FH-005-3
ELECTRICAL CHARACTERISTICS over operating temperature range, at VCC = 12 V.
Limits
Characteristic
Symbol
Test Conditions
Min. Typ. Max.
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Fall Time
VCC
VOUT(SAT)
IOFF
ICC
tr
tf
Operating
IOUT = 20 mA, B > BOP
VOUT = 24 V, B < BRP
B < BRP (Output OFF)
B > BOP (Output ON)
RL = 820 , CL = 20 pF
RL = 820 , CL = 20 pF
4.5 — 24
— 175 400
— 0.05 1.0
— 3.2 9.0
— 5.0 —
— 100 —
— 100 —
Units
V
mV
µA
mA
mA
ns
ns
MAGNETIC CHARACTERISTICS over oper. temp. and oper. supply voltage ranges.
Limits
Characteristic
Symbol
Test Conditions
Min. Typ. Max.
Operate Point
Release Point
Hysteresis
BOP
BRP
Bhys
-40 8.5
60
-50 -19 50
5.0 27 55
NOTES: BOP = operate point (output turns ON); BRP = release point (output turns OFF); Bhys = hysteresis (BOP - BRP).
As used here, negative flux densities are defined as less than zero (algebraic convention).
Typical values are at TA = +25°C and VCC = 12 V.
1 gauss (G) is exactly equal to 0.1 millitesla (mT).
Units
G
G
G
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1995, 2003 Allegro MicroSystems, Inc.









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A3134U Даташит, Описание, Даташиты
3134
LOW-HYSTERESIS
BIPOLAR HALL-EFFECT SWITCH
FOR HIGH-TEMP. OPERATION
TYPICAL OPERATING CHARACTERISTICS
SWITCH POINTS
40
HYSTERESIS
50
20
OPERATE POINT
0
-20
RELEASE POINT
VCC = 4.5 V–24 V
-40
-50 -25 0
25 50 75 100 125 150
AMBIENT TEMPERATURE IN °C
Dwg. GH-052
40 VCC = 4.5 V24 V
30
20
10
0
-50 -25 0
25 50 75 100 125 150
AMBIENT TEMPERATURE IN °C
Dwg. GH-051
OUTPUT SATURATION VOLTAGE
SUPPLY CURRENT
300 5.0
I OUT = 20 mA
VCC = 4.524 V
200
100
B < BRP
4.0
VCC = 24 V
3.0 VCC = 12 V
VCC = 4.5 V
2.0
0
-50 -25
0 25 50 75 100
AMBIENT TEMPERATURE IN °C
125 150
Dwg. GH-029
1.0
-50 -25 0
25 50
75 100 125 150
AMBIENT TEMPERATURE IN °C
Dwg. GH-053
www.allegromicro.com










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