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參數(shù)資料
| 型號： | A3282EUA-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Chopper-Stabilized Hall Effect Latch |
| 中文描述： | 斬波穩(wěn)定霍爾效應鎖存 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大小： | 476K |
| 代理商： | A3282EUA-T |
7
A3282-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Chopper-Stabilized Hall Effect Latch
A3282
Functional Description
B
O
B
R
B
HYS
V
CC
V
O
V
OUT(SAT)
S
S
B+
B–
V+
0
0
VCC
V
S
Sensor Output
GND
VOUT
R
LOAD
A3282
0.1 μF
C
BYP
Operation
The output of these devices switches low (turns on) when a
magnetic
fi
eld perpendicular to the Hall sensor exceeds the
operate point threshold, B
OP
. After turn-on, the output voltage
is V
OUT(SAT)
. The output transistor is capable of sinking current
up to the short circuit current limit, I
OM
, which is a minimum of
30 mA. Note that the device latches, that is, a south pole of suf
fi
-
cient strength towards the branded surface of the device turns the
device on. The device remains on if the south pole is removed.
When the magnetic
fi
eld is reduced below the release point, B
RP
,
the device output turns off (goes high). 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 region (less than B
OP
and
higher than B
RP
) allows an indeterminate output state. The correct
state is attained after the
fi
rst 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 sensor) between the
supply and ground of the device to reduce both external noise
and noise generated by the chopper stabilization technique. As is
shown in Panel B of
fi
gure 1, a 0.1μF capacitor is typical.
Extensive applications information on magnets and Hall-effect
sensors is available in:
Hall-Effect IC Applications Guide
, AN27701,
Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead
Welding and Lead Forming
, AN27703.1
Soldering Methods for Allegro’s Products – SMT and Through-
Hole
, AN26009
All are provided in
Allegro Electronic Data Book
, AMS-702 and
the Allegro Web site: www.allegromicro.com
Figure 1: Switching Behavior of Latches.
In Panel A,
on the horizontal axis, the B+ direction indicates increasing south polarity magnetic
fi
eld strength, and the B– direction indicates decreasing south polarity
fi
eld strength (including the case of increasing north polarity). This
behavior can be exhibited when using a circuit such as that shown in panel B.
(A)
(B)
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| A3282LUA-T | Chopper-Stabilized Hall Effect Latch |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3282LLHLT | 功能描述:IC SWITCH HALL EFFECT SOT23W RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝: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:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3282LLHLT-T | 功能描述:IC SW HALL EFFECT CHOPPER SOT23W RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝: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:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3282LUA | 功能描述:IC SWITCH HALL EFFECT 3-SIP RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝: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:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3282LUA-T | 功能描述:IC SW HALL EFFECT CHOPPER 3-SIP RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝: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:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
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