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A3123UA PDF даташит

Спецификация A3123UA изготовлена ​​​​«Allegro MicroSystems» и имеет функцию, называемую «HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION».

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Номер произв A3123UA
Описание HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
Производители Allegro MicroSystems
логотип Allegro MicroSystems логотип 

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A3123UA Даташит, Описание, Даташиты
A3121, A3122, and A3133
Hall Effect Switches for High Temperature Operation
Discontinued Product
These parts are no longer in production The device should not be
purchased for new design applications. Samples are no longer available.
Date of status change: October 31, 2005
Recommended Substitutions:
For new customers and applications, refer to the A110x family.
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a
product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information
included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor
for any infringements of patents or other rights of third parties which may result from its use.









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A3123UA Даташит, Описание, Даташиты
3121, 3122, AND
3123
HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE OPERATION
V
CC
12
3
Dwg. PH-003A
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC ........................... 30 V
Reverse Battery Voltage, V ........
RCC
-30 V
Magnetic Flux Density, B ....... Unlimited
Output
OFF
Voltage,
V
OUT
................
28
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
These Hall-effect switches are monolithic integrated circuits with
tighter magnetic specifications, designed to operate continuously over
extended temperatures to +150°C, and are more stable with both tem-
perature and supply voltage changes. The unipolar switching character-
istic makes these devices ideal for use with a simple bar or rod magnet.
The three basic devices (A3121, A3122, and A3123) are identical except
for magnetic switch points.
Each device includes a voltage regulator for operation with supply
voltages of 4.5 volts to 24 volts, reverse battery protection diode, qua-
dratic Hall-voltage generator, temperature compensation circuitry, small-
signal amplifier, Schmitt trigger, and an open-collector output to sink up
to 25 mA. With suitable output pull up, they can be used with bipolar or
CMOS logic circuits. The A3121 is an improved replacement for the
UGx3113 and UGx3119.
The first character of the part number suffix determines the device
operating temperature range. Suffix ‘E–’ is for the automotive and
industrial temperature range of -40°C to +85°C. Suffix ‘L–’ is for the
automotive and military temperature range of -40°C to +150°C. Two
package styles provide a magnetically optimized package for most
applications. Suffix ‘–LT’ is a miniature SOT89/TO-243AA transistor
package for surface-mount applications; suffix ‘–UA’ is a three-lead
ultra-mini-SIP.
FEATURES and BENEFITS
s Superior Temp. Stability for Automotive or Industrial Applications
s 4.5 V to 24 V Operation … Needs Only An Unregulated Supply
s Open-Collector 25 mA Output … Compatible with Digital Logic
s Reverse Battery Protection
s Activate with Small, Commercially Available Permanent Magnets
s Solid-State Reliability … No Moving Parts
s Small Size
s Resistant to Physical Stress
Always order by complete part number, e.g., A3121EUA .









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A3123UA Даташит, Описание, Даташиты
3121, 3122, AND 3123
HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE
OPERATION
ELECTRICAL CHARACTERISTICS over operating temperature range, at VCC = 12 V.
Characteristic
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Fall Time
Symbol
VCC
VOUT(SAT)
IOFF
ICC
tr
tf
Test Conditions
Operating
IOUT = 20 mA, B > BOP
VOUT = 24 V, B < BRP
B < BRP (Output OFF)
RL = 820 , CL = 20 pF
RL = 820 , CL = 20 pF
Min.
4.5
Limits
Typ. Max.
— 24
140 400
<1.0
10
4.6 9.0
0.04
2.0
0.18
2.0
Units
V
mV
µA
mA
µs
µs
MAGNETIC CHARACTERISTICS in gauss over operating supply voltage range.
Characteristic
BOP at TA = 25°C
over operating temp. range
BRP at TA = 25°C
over operating temp. range
Bhys at TA = 25°C
over operating temp. range
Min.
250
220
125
80
70
60
A3121
Typ. Max.
350 450
350 500
245 380
245 410
105 140
105 150
Part Numbers*
A3122
Min. Typ. Max.
280 340 400
260 340 430
140 235 330
120 235 360
70 105 140
70 105 140
A3123
Min. Typ.
250 345
230 345
180 240
160 240
70 105
70 105
Max
440
470
300
330
140
140
NOTES: Typical values are at TA = +25°C and VCC = 12 V.
BOP = operate point (output turns ON); BRP = release point (output turns OFF); Bhys = hysteresis (BOP - BRP).
*Complete part number includes a suffix to identify operating temperature range (E- or L-) and package type ( -LT or -UA).
FUNCTIONAL BLOCK DIAGRAM
1 VCC
REG.
X 3 OUTPUT
2 GROUND
Dwg. FH-005-2
115 Northeast Cutoff, Box 15036
2 Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1992, 2002 Allegro MicroSystems, Inc.










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Номер в каталогеОписаниеПроизводители
A3123UHALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATIONAllegro MicroSystems
Allegro MicroSystems
A3123UAHALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATIONAllegro MicroSystems
Allegro MicroSystems

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