WMSIC Electronic Components

ALLEGRO ALS31300EEJASR-500 ALS31300EEJASR

ModelALS31300EEJASR-500
Package10-WFDFN,EXPOSED-PAD
BrandALLEGRO
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 22+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
ALLEGRO ALS31300EEJASR-500
Type
10-WFDFN, EXPOSED-PAD
Unit
Electronic Component
Minimum package
6000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
ALS31300EEJASR-500
Electronic Component
1
Package
10-WFDFN
Electronic Component
3D Magnetic Sensor
Electronic Component
0.05g
Linear
±1.7%
Electronic Component
1
Electronic Component
BM0265431110
Operating Temperature
40℃~+85℃
Operating Voltage
2.65V~3.5V
Operating Current
3.4mA
Magnetic
±50mT
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ALS31300EEJASR-500霍尔效应传感器产品概述

一、产品定位与核心特性

ALS31300EEJASR-500是美国埃戈罗(Allegro)推出的线性霍尔效应传感器,专为中低量程磁场检测、位置感应及电流间接测量场景设计,核心优势在于数字输出简化集成、宽温范围稳定可靠。其关键特性包括:

  1. 数字I2C输出:无需模拟信号调理电路,直接对接MCU,降低硬件复杂度;
  2. 线性磁场覆盖:±50mT量程适配多数消费电子、工业场景;
  3. 中精度线性度:±1.7%非线性误差满足位置/磁场检测基本需求;
  4. 低功耗设计:3.4mA典型电流适配电池供电设备;
  5. 宽温适应:-40℃~+85℃覆盖户外、工业极端环境。

二、关键性能参数解析

2.1 磁场检测能力

  • 量程范围:±50mT(毫特斯拉),是开关型霍尔的升级,可输出与磁场强度成正比的线性信号;
  • 线性度:±1.7%(满量程误差),在电机转子位置检测、低量程电流间接测量(10A以内,配合磁集中器)等场景中无需额外校准即可稳定输出。

2.2 电气性能

  • 工作电压:2.65V~3.5V,覆盖常见MCU供电(3.3V为典型值),无需电压转换;
  • 工作电流:3.4mA(典型值),比同类模拟输出霍尔(5~10mA)功耗降低40%,适合手持设备(如智能手环姿态辅助检测)。

2.3 环境适应性

  • 工作温度:-40℃~+85℃,符合工业PLC、户外安防设备的温度要求;
  • 存储温度:扩展至-55℃~+150℃,便于仓储运输。

三、接口与封装设计

3.1 I2C数字接口

采用标准I2C接口,支持多设备级联(引脚配置地址),输出16位数字信号,分辨率达1.5μT/LSB(满量程±50mT对应100mT范围,65536步长),可精准捕捉微小磁场变化,抗干扰能力强于模拟输出。

3.2 10-WFDFN裸露焊盘封装

  • 尺寸:1.6mm×1.6mm×0.5mm(超小型),适配智能手机、智能手表等高密度PCB;
  • 裸露焊盘:底部焊接到PCB接地层,增强散热(降低温度漂移),同时提升机械稳定性。

四、典型应用场景

  1. 消费电子:

    • 智能门锁:检测门磁/锁舌位置,输出开关状态;
    • 智能穿戴:辅助姿态检测(抬腕识别);
    • 笔记本:屏幕开合角度检测,触发休眠/唤醒。
  2. 工业自动化:

    • 小型电机位置反馈:伺服/步进电机转子位置检测;
    • 低量程电流测量:1~10A电流间接监测(配合磁环);
    • 机械臂关节:检测转动角度,适配协作机器人安全控制。
  3. 汽车电子(基础级):

    • 车窗/天窗:玻璃升降位置检测(防夹手);
    • 座椅调节:前后/高低位置反馈,实现记忆功能。

五、选型与使用注意事项

  1. 电压匹配:供电需在2.65V~3.5V,避免过压(>3.5V损坏)或欠压(<2.65V输出不稳定);
  2. 干扰防护:远离强磁场源(电机、变压器),必要时加屏蔽罩;
  3. 封装焊接:裸露焊盘必须焊接到接地层,否则散热不良影响线性度;
  4. 地址配置:通过引脚电平设置I2C地址,避免多设备冲突。

该传感器凭借Allegro的霍尔技术优势,平衡了精度、功耗与集成性,是中低量程磁场检测场景的高性价比选择。

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