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參數(shù)資料
| 型號： | A3212EELLT-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| 中文描述： | 微功耗，超靈敏霍爾開關(guān)外匯FECT |
| 文件頁數(shù)： | 7/13頁 |
| 文件大小： | 384K |
| 代理商： | A3212EELLT-T |
3212
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCH
www.allegromicro.com
7
Operation.
The output of this device switches low (turns on)
when a magnetic field perpendicular to the Hall sensor exceeds
the operate point B
OPS
(or is less than B
OPN
). After turn-on, the
output is capable of sinking up to 1 mA and the output voltage
is V
OUT(ON)
. When the magnetic field is reduced below the
release point B
RPS
(or increased above B
RPN
), the device output
switches high (turns off). The dif er ence 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.
As used here, negative flux densities are defined as less than
zero (algebraic convention), i.e., -50 G is less than +10 G.
Applications.
Allegro's pole-independent sensing technique
allows for operation with either a north pole or south pole mag-
net orientation, enhancing the manufacturability of the device.
The state-of-the-art technology provides the same output polarity
for either pole face.
It is strongly recommended that an external bypass ca pac or
be con nect ed (in close proximity to the Hall sensor) between the
supply and ground of the device to reduce both external noise
and noise generated by the chopper-sta bi i za ion tech nique. This
is especially true due to the relatively high im ped ance of battery
supplies.
The sim plest form of magnet that will op er ate these devices
is a bar magnet with either pole near the branded surface of the
device. Many oth er meth ods of operation are possible. Ex en
sive applications information for Hall-effect sensors is available
in:
Hall-Effect IC Applications Guide
, Application Note 27701;
Hall-Effect Devices: Soldering, Gluing, Potting, En cap su
lat ng, and Lead Forming
, Application Note 27703.1;
Soldering of Through-Hole Hall-Sensor Dervices
, Application
Note 27703; and
Soldering of Surface-Mount Hall-Sensor Devices
, Application
Note 27703.2.
All are provided at
www.allegromicro.com
FUNCTIONAL DESCRIPTION (cont'd)
0
+B
0
Dwg. GH-043-1
-B
OUTPUT ON
5 V
MAX
BOPS
BRPS
BOPN
BRPN
O
MAGNETIC FLUX
OUTPUT OFF
OUTPUT
Dwg. EH-013-2
0.1
μ
F
SUPPLY
(3 V BATTERY)
10 pF
5
X
V
D
1
2
3
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| A3212 | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212EEHLT | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212EEHLT-T | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212ELHLT | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212ELHLT-T | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3212ELHLT | 制造商:Allegro MicroSystems LLC 功能描述:Hall Effect Sensor 1mA Latch 2.75V 3-Pin SOT-23W T/R |
| A3212ELHLT-T | 功能描述:IC SWITCH HALL EFFECT SOT23W RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3212ELHLT-T-CUT | 制造商:Allegro MicroSystems LLC 功能描述: |
| A3212ELHLX-T | 制造商:Allegro MicroSystems LLC 功能描述:IC SWITCH HALL EFFECT SOT23W |
| A3212EUA | 制造商:Allegro MicroSystems LLC 功能描述: |
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