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参数资料
| 型号： | A1122LUA-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 12/18页 |
| 文件大小： | 407K |
| 描述： | SENSOR HALL EFFECT UNIPLR 3SIP |
| 标准包装： | 4,000 |
| 传感范围： | 200G 跳闸，110G 释放 |
| 类型： | 单极开关 |
| 电源电压： | 3 V ~ 24 V |
| 电流 - 电源： | 4mA |
| 电流 - 输出（最大）： | 25mA |
| 输出类型： | 数字式，开漏极 |
| 特点： | 高温 |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 3-SIP |
| 供应商设备封装： | 3-SIP |
| 包装： | 散装 |
Chopper Stabilized Precision Hall Effect Switches
A1120, A1121, A1122,
A1123, and A1125
12
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
C
BYP
A112x
VOUT
GND
0.1 糉
VCC
Output
R
L
V
S
Operation
The output of the A1120, A1121, A1122, and A1123 devices
switches low (turns on) when a magnetic field perpendicular to
the Hall element exceeds the operate point threshold, B
OP
(see
panel A of figure 1). When the magnetic field is reduced below
the release point, B
RP
, the device output goes high (turns off).
The output of the A1125 devices switches high (turns off) when
a magnetic field perpendicular to the Hall element exceeds the
operate point threshold, B
OP
(see panel B of figure 1). When the
magnetic field is reduced below the release point, B
RP
, the device
output goes low (turns on).
After turn-on, the output voltage is V
OUT(SAT)
. The output tran-
sistor is capable of sinking current up to the short circuit current
limit, I
OM
, which is a minimum of 30 mA.
The difference in the magnetic operate and release points is the
hysteresis, B
HYS ,
of the device. This built-in hysteresis allows
clean switching of the output even in the presence of external
mechanical vibration and electrical noise. Powering-on the device
in the hysteresis range (less than B
OP
and higher than B
RP
) will
give an indeterminate output state. The correct state is attained
after the first excursion beyond B
OP
or B
RP
.
Applications
It is strongly recommended that an external bypass capacitor be
connected (in close proximity to the Hall element) between the
supply and ground of the device to reduce external noise in the
application. As is shown in panel B of figure 1, a 0.1 糉 capacitor
is typical.
Extensive applications information for Hall effect devices is
available in:
" Hall-Effect IC Applications Guide, Application Note 27701
" Guidelines for Designing Subassemblies Using Hall-Effect
Devices, Application Note 27703.1
" Soldering Methods for Allegros Products SMT and Through-
Hole, Application Note 26009
All are provided on the Allegro Web site, www.allegromicro.com.
Figure 1. Device switching behavior. In panels A and B, on the horizontal axis, the B+ direction indicates increasing south polarity magnetic field strength.
This behavior can be exhibited when using an electrical circuit such as that shown in panel C.
(A)
(B)
(C)
Functional Description
B
HYS
V
CC
V
OUT(SAT)
B+
V+
0
0
B
HYS
V
CC
V
OUT(SAT)
B+
V+
0
0
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| A1121LUA-T | SENSOR HALL EFFECT UNIPLR 3SIP |
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| 4702-48-0 | BANANA PLUG/BANANA JACK 48" BLK |
| A1221LUA-T | IC HALL EFFECT LATCH 3V 3-SIP |
| 4702-36-2 | BANANA PLUG/BANANA JACK 36" RED |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A1122RW | 制造商:MPD 制造商全称:MicroPower Direct, LLC 功能描述:Miniature, 10W DIP Single & Dual Output DC/DC Converters |
| A1123ELHLT-T | 功能描述:IC HALL EFFECT SWITCH UNI SOT23W 制造商:allegro microsystems, llc 系列:汽车级，AEC-Q100 包装:剪切带（CT） 零件状态:有效 功能:单极开关 技术:霍尔效应 极化:南极 感应范围:35.5mT 跳闸，15mT 释放 测试条件:-40°C ~ 85°C 电压 - 电源:3 V ~ 24 V 电流 - 电源（最大值）:4mA 电流 - 输出（最大值）:25mA 输出类型:开路漏极 特性:- 工作温度:-40°C ~ 85°C（TA） 封装/外壳:SOT-23W 供应商器件封装:SOT-23W 标准包装:1 |
| A1123ELHLX-T | 功能描述:IC HALL EFFECT SWITCH UNI SOT23W 制造商:allegro microsystems, llc 系列:汽车级，AEC-Q100 包装:带卷（TR） 零件状态:有效 功能:单极开关 技术:霍尔效应 极化:南极 感应范围:35.5mT 跳闸，15mT 释放 测试条件:-40°C ~ 85°C 电压 - 电源:3 V ~ 24 V 电流 - 电源（最大值）:4mA 电流 - 输出（最大值）:25mA 输出类型:开路漏极 特性:- 工作温度:-40°C ~ 85°C（TA） 封装/外壳:SOT-23W 供应商器件封装:SOT-23W 标准包装:10,000 |
| A1123EUA-T | 功能描述:IC HALL EFFECT SWITCH UNI 3SIP 制造商:allegro microsystems, llc 系列:汽车级，AEC-Q100 包装:散装 零件状态:有效 功能:单极开关 技术:霍尔效应 极化:南极 感应范围:35.5mT 跳闸，15mT 释放 测试条件:-40°C ~ 85°C 电压 - 电源:3 V ~ 24 V 电流 - 电源（最大值）:4mA 电流 - 输出（最大值）:25mA 输出类型:开路漏极 特性:- 工作温度:-40°C ~ 85°C（TA） 封装/外壳:3-SSIP 供应商器件封装:3-SIP 标准包装:500 |
| A1123-HBL(7).GN | 制造商:SUNON 功能描述:AC FANS |
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