WMSIC Electronic Components

ALLEGRO CT8132DM-HS3 CT8132DM

ModelCT8132DM-HS3
PackageSOT-23-3
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO CT8132DM-HS3
Type
ALLEGRO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
CT8132DM-HS3
Electronic Component
1
Package
SOT-23-3
Type
Electronic Component
Electronic Component
Hall Switch
Electronic Component
0.044g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0259731959
Operating Temperature
40℃~+125℃
Operating Voltage
1.7V~5.5V
Operating Current
11.5uA
Output Type
Electronic Component
Sampling Frequency
2.5kHz

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

CT8132DM-HS3 产品概述

一、产品简介

CT8132DM-HS3 是 ALLEGRO(美国埃戈罗)推出的一款高灵敏度、全极性(omnipolar)数字磁性开关,采用 TMR(隧道磁阻)传感技术,封装为 SOT-23-3,面向板机接口与霍尔效应/磁性检测应用。器件工作电压范围宽(1.7V–5.5V),低功耗且能在高温环境下稳定工作(−40℃ 至 +125℃),适合对低磁场点有严格要求的便携与工业应用。

二、主要性能参数

  • 类型:全极型(Omnipolar)数字磁性开关
  • 技术:TMR 高灵敏度磁传感
  • 工作电压:1.7 V ~ 5.5 V
  • 工作点(Operate,Gs):约 1.5 mT
  • 释放点(Release,Gs):约 1.0 mT
  • 工作温度:−40 ℃ ~ +125 ℃
  • 工作电流:典型 11.5 μA(低功耗)
  • 采样频率:2.5 kHz(对快速变化磁场有良好响应)
  • 输出类型:推挽(Push-Pull)数字输出
  • 封装:SOT-23-3(便于贴片装配与批量生产)

三、功能与优势

  • 高灵敏度:TMR 结构使器件对弱磁场(mT 级别)具有稳定响应,适合用来替代传统簧片开关或低灵敏度霍尔元件。
  • 全极性工作:对南北极均可触发,安装方向要求宽松,有利于工艺装配与整机设计。
  • 低静态电流:典型工作电流仅 11.5 μA,适合电池供电、待机时间要求高的便携设备。
  • 宽电压与高温范围:1.7–5.5 V 电源兼容多种 MCU 与系统,−40 ℃ 至 +125 ℃ 的工作温度满足工业级应用。
  • 推挽输出:直接驱动逻辑门或 MCU 输入,无需外接上拉电阻(但应参考具体原理图确认)。

四、典型应用场景

  • 便携电子:盖检测、位置/开合检测(手机、平板、笔记本等)
  • 家电与白电:门磁检测、状态感知(洗衣机、冰箱)
  • 工业控制:限位检测、转速或角度触发传感
  • 汽车电子(在符合车规要求的前提下):车门/后备箱开关、位置感知
  • 取代簧片开关:体积更小、无机械寿命限制、抗振动更好

五、封装与引脚(概述)

CT8132DM-HS3 采用 SOT-23-3 小体积封装,便于 SMT 装配。典型引脚功能包括 VCC、GND、OUT(推挽输出)。在实际设计时请参考官方数据手册确认引脚排列与推荐焊盘,注意散热与寄生磁场布局。

六、设计建议与注意事项

  • 电源去耦:建议在 VCC 与 GND 之间靠近器件焊盘放置 0.1 μF 陶瓷去耦电容,以保证噪声抑制与稳定采样。
  • 磁场布局:避免强磁场源或磁性元件近距离干扰;若对精度敏感,建议做 PCB 上的屏蔽/隔离设计或标定。
  • 温度漂移:TMR 与器件工作点会随温度变化,需在极端温度条件下验证开/关点满足系统要求。
  • 采样速率:2.5 kHz 的采样频率适合大多数机械移动与位置检测,但若用于非常高速脉冲磁场,应评估响应与取样一致性。
  • 输出驱动能力:采用推挽输出可直接驱动常见逻辑,但若需要驱动较大负载或长线缆,请核实驱动能力并考虑缓冲或隔离。

七、结语

CT8132DM-HS3 结合高灵敏度 TMR 技术、全极性响应与低功耗特性,是替代传统磁开关并提升系统可靠性的理想选择。其宽电压、宽温度范围和小体积封装,使其在消费电子、家电及工业控制等多个领域具有良好适配性。建议在设计初期参考厂商完整数据手册进行电气与机械布局验证,以保证最终应用的稳定性与长期可靠性。

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