WMSIC Electronic Components

ALLEGRO ACS714LLCTR-30A-T ACS714LLCTR

ModelACS714LLCTR-30A-T
Package8-SOIC
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 23+

Available for RFQ

Technical data

Product details

15 specifications

Core information

Product name
ALLEGRO ACS714LLCTR-30A-T
Type
ALLEGRO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
ACS714LLCTR-30A-T
Electronic Component
1
Package
8-SOIC
Electronic Component
Current Sensor
Electronic Component
0.197g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0264229680
Electronic Component
Electronic Component
Electronic Component
3000

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

ACS714LLCTR-30A-T 产品概述

一、产品简介

ACS714LLCTR-30A-T 为美国 ALLEGRO(埃戈罗)推出的一款开环(Open‑Loop)霍尔电流传感器,适用于 AC/DC 双向电流测量。器件工作电源为 5V,封装为 8‑引脚 SOIC(0.154" / 3.90 mm 宽),以卷带(T/R)形式供货。型号中的 “30A” 表示器件针对最大直流/交流电流量程设计,可在正负方向检测电流极性。

二、主要功能与特点

  • 双向检测:支持正负电流检测,输出为以 VCC/2 为基准的模拟电压,随电流正负偏离该中点。
  • AC/DC 兼容:能够测量直流与交流电流,通过合适采样与后处理可得到瞬时、均方根等指标。
  • 开环霍尔结构:非接触测量,提供电气隔离特性,结构简单且适合成本敏感的高电流测量场景。
  • 标准 SOIC‑8 封装:适合集成到常规 PCB 工艺,便于自动贴装与批量生产。
  • 卷带包装(T/R):利于 SMT 生产线的高速贴装与可靠库存管理。

三、工作原理与输出特性(概述)

ACS714 系列采用霍尔效应检测导体产生的磁场,输出为与流经导体的电流成比例的模拟电压,零电流时输出约为 VCC/2。输出可直接驱动 ADC 采样,便于在 MCU/ARM 系统中进行数模处理与计算。作为开环器件,其线性与精度在多数工业与消费类应用下表现良好,但在极端精度需求下需借助校准或闭环方案。

四、典型应用

  • 电机驱动电流监测(整车/无刷电机/伺服)
  • 开关电源与逆变器电流测量与保护
  • 电池管理系统(BMS)中的充放电监控(需配合滤波与采样策略)
  • 过流保护与故障检测、电流统计与能耗计算

五、设计与选型建议

  • 电源与去耦:为保证输出稳定,建议靠近器件放置陶瓷去耦(例如 0.1 μF)并配合较大容量旁路电容,使用稳压 5V 电源。
  • PCB 布局:高电流导体应尽量做为宽铜带并尽可能靠近器件规定的电流路径,减少电阻和温升;避免器件附近有强烈外部磁场源和大电流环路影响测量精度。
  • 信号采样:输出含有噪声成分,可在 ADC 端采用软硬件滤波(RC 低通、采样平均或数字滤波)以改善测量稳定性;测量交流时需保证采样速率与带宽匹配,或在后端做 RMS 计算。
  • 校准与温漂:对零点偏移和增益误差做初次校准,并考虑在宽温度范围内测温补偿以提高长期精度。
  • 热管理:连续大电流会导致导体和封装发热,设计时应评估器件自热对测量精度的影响并留有散热空间。

六、注意事项

  • 作为开环产品,其线性与灵敏度受位置、温度及外部磁场影响,极端精度要求应评估是否需要闭环方案。
  • 输出为模拟量,长距离传输时需注意干扰,对低电平输出建议屏蔽或差分采样(配合差分放大器)。
  • 在高纹波或快速瞬变电流环境下,需评估器件带宽与响应时间是否满足应用要求。

七、采购与封装信息

  • 品牌:ALLEGRO(美国埃戈罗)
  • 型号:ACS714LLCTR‑30A‑T(T/R 卷带供货)
  • 封装:8‑SOIC(0.154" / 3.90 mm 宽)

总结:ACS714LLCTR‑30A‑T 为一款适用于广泛工业与消费类电流监测的开环霍尔传感器,集成度高、易于 PCB 安装和系统集成。通过合理的电源滤波、PCB 布局与校准设计,可在±30A 范围内提供可靠的双向 AC/DC 电流测量解决方案。若需更高精度或特殊温度/带宽指标,请结合详细数据手册与样片验证。

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