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ACS723LLCTR-20AU-T

霍尔电流传感器，20A 单向，200mV/A，80/20kHz BW，2.4kVrms 隔离，SOIC-8 T/R

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制造商零件：

ACS723LLCTR-20AU-T

包装：

8-SOIC（4.9 x 3.9 x 1.75 毫米，1.27 毫米间距，鸥翼型）

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说明

Allegro MicroSystems 的 ACS723LLCTR-20AU-T 是一款高精度、电隔离霍尔效应电流传感器 IC，采用 8 引线 SOIC 封装。它具有 20A 单向电流检测、200 mV/A 灵敏度、引脚可选的 80 kHz 或 20 kHz 带宽、2.4 kVrms 隔离电压、+/-2% 精度、+/-1% 线性度、0.65 mOhm 导体电阻、5V 单电源以及获得专利的数字温度补偿功能，可在开环配置中实现接近闭环的精度。通过 UL60950-1 认证。卷带包装。工作温度范围为 -40C 至 +150C。.

Allegro MicroSystems 的 ACS723LLCTR-20AU-T 是一款高精度、电隔离霍尔效应电流传感器 IC，采用紧凑型 8 引线 SOIC 封装和卷带式封装。20AU 变体提供 20A 单向（0 至 20A）电流测量，灵敏度为 200 mV/A。.

ACS723 采用 Allegro 获得专利的数字温度补偿电路，可在开环传感器配置中实现接近闭环的精度。这消除了对磁集中器的需求，同时在 -40C 至 +150C 的工作温度范围内保持出色的精度。总精度为 +/-2%（Farnell 规格）至 +/-3%（DigiKey 规格），线性度为 +/-1%。.

该器件具有引脚可选带宽：80 kHz 适用于高速应用，20 kHz 适用于低噪声操作。专用 BW 引脚可选择带宽。集成屏蔽消除了电流导体与芯片之间的电容耦合，显著抑制了电机驱动和开关电源应用中至关重要的高 dv/dt 瞬变引起的输出噪声。.

从引脚 1-2 (IP+) 到引脚 3-4 (IP-) 的单片式导体路径的典型电阻仅为 0.65 mOhm，因此即使在 20A 连续电流下，功率损耗和发热量也极小。导体路径与传感器引线（引脚 5-8）之间采用电隔离，介电强度为 2.4 kVrms，通过 UL60950-1（第 2 版）认证。基本隔离工作电压为 420 Vpk 或 297 Vrms。.

比率输出电压与电源电压成正比，在 VCC = 5V 时，灵敏度校准为 200 mV/A。对于双向变体，静态输出电压（零电流）通常为 VCC/2；对于这种单向 20AU 变体，静态输出电压约为 0.5V（与地的典型偏移为 100 mV），在 20A 电流时，输出电压线性增至约 4.5V。.

斩波稳定的 BiCMOS 霍尔集成电路提供极其稳定的静态输出电压，磁滞接近零。灵敏度和静态输出电压的出厂校准可确保较高的初始精度，无需用户校准。电源电流典型值为 9 mA，最大值为 14 mA。.

ACS723LLCTR-20AU-T 是过时的 ACS713ELCTR-20A 的推荐替代产品，在相同的引脚布局下提供更高的精度和温度性能。.

** 霍尔效应电流感应：** ACS723 集成了低偏移线性霍尔传感器电路和靠近芯片表面的铜传导路径。流经铜通路（引脚 1-2 至引脚 3-4）的电流会产生与电流成正比的磁场。霍尔传感器检测该磁场，并产生与磁场强度和电流成正比的电压。.

**数字温度补偿：** Allegro 获得专利的数字温度补偿电路可纠正霍尔传感器灵敏度和偏移量随温度变化而产生的漂移。这是在每个时钟周期的数字域中完成的，无需闭环传感器中使用的磁芯和反馈线圈，即可实现接近闭环的精度。这样，闭环传感器的精度优势就体现在成本和尺寸上，而开环传感器的成本和尺寸则相对较小。.

**斩波稳定：** BiCMOS 霍尔集成电路使用斩波稳定消除困扰传统霍尔传感器的偏移漂移。输入以高频率进行周期性切换（斩波），并在差分信号路径中消除直流偏移。因此，静态输出电压在时间和温度上都极为稳定。.

**集成屏蔽层：** 电流导体和霍尔元件之间的导电屏蔽层消除了电容耦合。如果没有屏蔽层，电流导体上的高 dv/dt 瞬变将通过寄生电容耦合到霍尔传感器，从而在输出端产生噪声尖峰。屏蔽层将这种电容电流引向地，即使在嘈杂的开关环境中也能保持输出噪声性能。.

**引脚可选带宽：** BW 引脚可在 80 kHz 带宽（用于电机控制和过流保护中的快速瞬态检测）和 20 kHz 带宽（用于精密测量应用中的较低输出噪声）之间进行选择。较低的带宽可将集成噪声降低约 2 倍。.

针脚 名称 类型 说明
1 IP+ I 正电流导体端子；电流从该引脚流入；连接至测量电流路径的源端；0.65 毫欧电阻至 IP-
2 IP+ I 正电流导体端子（与引脚 1 平行）；双引脚可减少寄生电感
3 IP- O 负电流导体端子；电流从该引脚流出；连接至负载端；与传感器 5-8 引脚电隔离
4 IP- O 负电流导体端子（与 3 号引脚并联）；双引脚，用于低电感
5 接地 G 接地；传感器信号接地；连接至 PCB 地平面；与电流路径分开
6 过滤器 输入/输出 外部滤波电容器连接；在 FILTER 和 VIOUT 之间连接电容器，以设置额外的输出滤波；如果不使用，则不连接；带宽由 BW 引脚和内部滤波器设置
7 VIOUT O 模拟输出电压；与 VCC 成比例；灵敏度 200mV/A；静态 0.5V（单向）；20A 时 4.5V；直接驱动 ADC 输入；典型输出阻抗 1.7kOhm
8 VCC P 电源电压；4.5V 至 5.5V；标称 5V；引脚附近用 0.1uF 陶瓷与 GND 去耦；灵敏度和静态电压与 VCC 成比例关系
应用 说明
电机控制电流感应 测量用于 FOC/梯形换向的电机相电流；80kHz 带宽可捕捉 PWM 纹波；过流检测响应时间为 5us；与电机驱动器的隔离电压为 2.4kVrms；数字温度补偿可在电机升温时保持精度
电池电流监控 监控电池组的充放电电流；20A 的电流范围涵盖典型的电动自行车和电动工具电池组；0.65mOhm 的导体损耗可延长电池寿命；单向测量，用于仅充电或仅放电监控；比率输出直接与 ADC 接口连接
开关模式电源保护 SMPS 中的过流故障检测；5us 的快速响应时间可在损坏前启动保护；集成屏蔽可抑制开关节点的 dv/dt 噪声；20kHz 带宽选项可降低用于阈值比较的输出噪声
模型 制造商 兼容性 主要区别
ACS723LLCTR-20AB-T 快板 双向变体 相同的 20A 量程，但为双向 (+/-20A)；灵敏度为 100mV/A；静态 VCC/2；相同的 SOIC-8 引脚输出；在需要交流或双向直流电流测量时使用
ACS723LLCTR-40AU-T 快板 更高的电流 单向 40A；灵敏度 100mV/A；同 SOIC-8；用于大电流应用
ACS712ELCTR-20A 快板 上一代 20A 双向；100mV/A；无数字温度补偿；精度较低；成本较低；正在被 ACS723 取代；只能用于现有设计中
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质量保证

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • 汽车电子: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
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4. Professional Reliability Control

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5. Traceability Management System

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6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

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Email: info@materialparts.com
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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