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参数资料
| 型号： | A3241LUA |
| 厂商： | Allegro MicroSystems, Inc. |
| 英文描述： | Chopper-Stabilized Unipolar Hall-Effect Switches |
| 中文描述： | 斩波稳定单极霍尔效应开关 |
| 文件页数： | 11/12页 |
| 文件大小： | 401K |
| 代理商： | A3241LUA |
8
A3241-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Chopper-Stabilized Unipolar Hall Effect Switches
A3241 and A3242
Functional Description
B
OP
B
RP
BHYS
VCC
V
CC
VOUT(SAT)
Switch
to
Low
Switch
to
High
B+
B–
V+
0
VCC
VS
Sensor Output
GND
VOUT
RLOAD
A324x
0.1 μF
CBYP
Operation
The output of these devices switches low (turns on) when a
magnetic eld (south polarity) perpendicular to the Hall sen-
sor exceeds the operate point threshold, BOP. After turn-on, the
output voltage is VOUT(SAT). The output transistor is capable of
sinking current up to the short circuit current limit, IOM, which
is a minimum of 30 mA. When the magnetic eld is reduced
below the release point, BRP, the device output goes high (turns
off). The difference in the magnetic operate and release points is
the hysteresis, Bhys, 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 BOP
and higher than BRP, allows an indeterminate output state. The
correct state is attained after the rst excursion beyond BOP or
BRP.
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 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 Unipolar Switches.
In Panel A, on the horizontal axis, the B+ direction indicates increasing south polarity
magnetic eld strength, and the B– direction indicates decreasing south polarity 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3241LUA-T | 功能描述:IC SWITCH HALL EFFECT 3-SIP RoHS:是 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3242 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Chopper-Stabilized Unipolar Hall-Effect Switches |
| A3242ELHLT | 功能描述:IC SWITCH HALL EFFECT SOT23W RoHS:否 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3242ELHLT-T | 功能描述:IC SWITCH HALL EFFECT SOT23W RoHS:是 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| A3242EUA | 功能描述:IC SWITCH HALL EFFECT 3-SIP RoHS:否 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
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