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参数资料
| 型号： | A3260EUA |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 6/10页 |
| 文件大小： | 861K |
| 描述： | IC SW HALL EFFECT BIPO 3-SIP |
| 标准包装： | 500 |
| 传感范围： | 40G 跳闸，-40G 释放 |
| 类型： | 双极卡锁 |
| 电源电压： | 3.5 V ~ 24 V |
| 电流 - 输出（最大）： | 8mA |
| 输出类型： | 数字，开路集电极 |
| 特点： | 稳压电压 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 3-SIP |
| 供应商设备封装： | 3-SIP |
| 包装： | 散装 |
3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
www.allegromicro.com
5
FUNCTIONAL DESCRIPTION
Chopper-Stabilized Technique. These devices use a
proprietary dynamic offset cancellation technique, with an
internal high-frequency clock to reduce the residual offset
voltage of the Hall element that is normally caused by device
overmolding, temperature dependencies, and thermal stress.
This technique produces devices that have an extremely stable
quiescent Hall output voltage, are immune to thermal stress, and
have precise recoverability after temperature cycling. This
technique will also slightly degrade the device output repeat-
ability.
The Hall element can be considered as a resistor array
similar to a Wheatstone bridge. A large portion of the offset is
a result of the mismatching of these resistors. The chopper-
stabilizing technique cancels the mismatching of the resistors by
changing the direction of the current flowing through the Hall
plate and Hall voltage measurement taps, while maintaining the
Hall-voltage signal that is induced by the external magnetic
flux. The signal is, then, captured by a sample-and-hold circuit.
Operation. The output of these devices turns ON when a
magnetic field (north pole) perpendicular to the Hall element
exceeds the release point threshold (B
RP
). After turn-ON, the
output will source current equal to the device operating current
plus a current source (I
GND(H)
). When the magnetic field is
increased (south pole) above the operate point (B
OP
), the output
will source current equal to the device operating
current with the current source turned OFF (I
GND(L)
). Note
especially that release can occur when the magnetic field is
removed but to ensure release, a field reversal is required. The
difference in the magnetic operate and release points is the
hysteresis (B
hys
) of the device. The hysteresis allows clean
switching of the output even in the presence of external me-
chanical vibration or electrical noise.
Powering up in the absence of a magnetic field (less than
B
OP
and higher than B
RP
) will allow an indeterminate output
state. The correct state is warranted after the first excursion
beyond B
OP
or B
RP
.
Bipolar switches
may switch on removal of field but
require field reversal for reliable operation over temperature
range; latches will
not switch on removal of magnetic field.
Dwg. EH-012
REG
X
+V
HALL
VOLTAGE
B
+
Dwg. AH-011-2
0
+B
0
FLUX DENSITY
Dwg. GH-034-6
-B
+I
IOUT + ICC
BRP
BOP
ICC
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3260LH | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH |
| A3260LLH | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Hall-Effect Switch |
| A3260LLHLT | 功能描述:IC SW HALL EFFECT BIPO SOT-23W 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 |
| A3260LLT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Hall-Effect Switch |
| A3260LT | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH |
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