WMSIC Electronic Components

ALLEGRO CT8122AM-HS3 CT8122AM

ModelCT8122AM-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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO CT8122AM-HS3
Type
SOT-23-3
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
CT8122AM-HS3
Electronic Component
1
Package
SOT-23-3
Type
Electronic Component
Electronic Component
Hall Switch
Electronic Component
0.07g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0259731958
Operating Temperature
40℃~+125℃
Operating Voltage
1.7V~5.5V
Operating Current
11.5uA
Output Current
3mA
Output Type
Electronic Component

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

CT8122AM-HS3 产品概述

一、产品简介

CT8122AM-HS3 是 ALLEGRO 推出的高灵敏度双极集成数字磁开关,基于 TMR (隧道磁阻) 技术,集成信号处理电路与推挽输出,封装为 SOT-23-3。器件工作电压范围宽(1.7V–5.5V),适用于电池供电与多种嵌入式系统,具有极低静态电流与较快采样速率,适合替代传统簧片管或霍尔开关场合。

二、主要特点

  • 高灵敏度:工作点/释放点均为 1 mT(典型),适合小体积磁铁和微弱磁场检测。
  • 低功耗:工作电流典型值 11.5 μA,适合电池供电与长寿命应用。
  • 宽电源范围:VCC = 1.7V ~ 5.5V,兼容 1.8V、3.3V 与 5V 系统。
  • 推挽输出:无需外部上拉电阻,输出驱动能力约 3 mA(源/汲取)。
  • 快速响应:采样频率 2.5 kHz,可响应快速磁场变化与动态位置事件。
  • 宽温度范围:-40°C ~ +125°C,适合工业级环境。

三、主要电气参数(概要)

  • 类型:双极型数字磁开关(Integrated Digital Bipolar)
  • 灵敏度:工作点 (Gs) = 1 mT;释放点 (Gs) = 1 mT(典型)
  • 输出电流能力:3 mA
  • 工作电流:11.5 μA(典型)
  • 采样频率:2.5 kHz
  • 输出形式:推挽(Push-Pull)
  • 封装:SOT-23-3

四、典型应用

  • 便携式与电池供电设备的开关/唤醒检测
  • 旋转或线性位置检测(限位、计数)
  • 电机、风扇转速与位置反馈
  • 智能家电、安防与门窗传感器
  • 汽车车内非安全级位置感知(室内灯、座椅检测等)

五、封装与布局建议

SOT-23-3 小体积封装便于空间受限的 PCB 设计。建议要点:

  • VCC 端附近放置 0.1 μF 去耦电容,贴近器件电源引脚。
  • 输出为推挽结构,驱动负载时注意限流与吸收电路(特别是感性负载)。
  • 避免在器件附近放置大面积软磁材料,以免影响灵敏度与迟滞特性。
  • 考虑磁钢方向与距离对检测距离与触发点的影响,必要时做量产前的磁场调校。

六、可靠性与注意事项

  • 器件额定工作温度 -40°C 至 +125°C,超过该范围可能影响性能或寿命。
  • 虽为高灵敏度器件,但在强磁环境(如永磁体靠近)应评估可能的饱和或不可逆偏置。
  • 建议在设计验证阶段进行温度与磁场循环测试,确认工作/释放点与环境稳定性。

七、采购与型号信息

品牌:ALLEGRO(美国 Allegro)
封装:SOT-23-3
型号:CT8122AM-HS3

如需进一步的引脚定义、典型电路、完整机械外形尺寸或器件电气特性曲线,可参考厂商数据手册或联系当地代理获取原厂资料。

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