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參數(shù)資料
| 型號： | A1120LUA-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 12/18頁 |
| 文件大?。?/td> | 407K |
| 描述： | IC SW HALL EFFECT CHOPPER 3-SIP |
| 產(chǎn)品培訓(xùn)模塊： | Current Sensor |
| 標(biāo)準(zhǔn)包裝： | 4,000 |
| 傳感范圍： | 50G 跳閘，5G 釋放 |
| 類型： | 單極開關(guān) |
| 電源電壓： | 3 V ~ 24 V |
| 電流 - 電源： | 4mA |
| 電流 - 輸出（最大）： | 25mA |
| 輸出類型： | 數(shù)字式，開漏極 |
| 特點(diǎn)： | 高溫 |
| 工作溫度： | -40°C ~ 150°C |
| 封裝/外殼： | 3-SIP |
| 供應(yīng)商設(shè)備封裝： | 3-SIP |
| 包裝： | 散裝 |
| 產(chǎn)品目錄頁面： | 1139 (CN2011-ZH PDF) |
| 其它名稱： | 620-1330 |
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A1120LUA-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect Switch IC |
| A1121 | 制造商:Quick 功能描述:Single 6.4mm Nozzle for 21-13205 and 21-13210 制造商:QUICK 功能描述:SINGLE NOZZLE NOZZLE FOR QUICK957/957D |
| A11214MNZQ | 制造商:ITT 制造商全稱:ITT Industries 功能描述:1-4 Pole Rotary Switches |
| A11214MSZQ | 制造商:ITT 制造商全稱:ITT Industries 功能描述:1-4 Pole Rotary Switches |
| A11214RNCBK | 功能描述:旋鈕開關(guān) Rotary RoHS:否 制造商:C&K Components 位置數(shù)量:5 卡片組數(shù)量: 每卡片組極數(shù):2 電流額定值:250 mA 電壓額定值:125 V 指數(shù)角: 觸點(diǎn)類型: 觸點(diǎn)形式:DPST 端接類型:Solder 安裝類型:Panel 觸點(diǎn)電鍍:Silver |
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