ACS718KMATR-10B-T

• Product Introduction

The Allegro™ ACS718 current sensor IC is an economical solution for high isolation voltage sensing for AC/DC sensing in industrial, commercial, and communications systems. While wide-body structures provide the creepage and electrical clearance required for high isolation voltages, small packages are ideal for applications with limited space. Typical application areas include motor control, load detection and management, switching power supplies, and overcurrent fault protection.

The device features a precise, low-offset linear Hall sensor circuitry with copper conduction paths near the wafer surface. The applied current through this copper conduction path generates a magnetic field that can be sensed by the integrated Hall IC and converted into a proportional voltage. Optimize device accuracy by the proximity of the magnetic field to the Hall sensor. The low-offset, chopper-stabilized BiCMOS Hall IC provides a proportional voltage that is programmed for accuracy after packaging. The output of the device has a positive slope as the current increases through a primary copper conductor path (from pins 1-4 to pins 5 -8), which is used for current sensing. The conventional internal resistance of this conduction path is 0.85mΩ, which has a low power loss.

The terminals of the conduction path are galvanically isolated from the sensor leads (pins 10-15). This allows the ACS718 current sensor to be used in high-level current sensing applications without the need for high-side differential amplifiers or other expensive isolation technologies.

The ACS718 features a small package mount SOICW16 (suffix MA) with a flat surface. The device is lead-free and 100% matte tin plated. The device is fully calibrated before being shipped from the factory.

• IEC/UL 60950-1 Ed.2 认证：
  • 介电强度 = 4800 Vrms（测试 60 秒）
  • 基础隔离电压 = 1550 Vpeak
  • 增强隔离电压 = 800 Vpeak
• 面积小的扁平型 SOIC16 宽体封装适合需要高电流隔离的空间狭小应用场合
• 0.85 mΩ 一次导体，功率损失低，耐冲击电流容量大。
• 350μA RMS √Hz 低噪声密度实现最大带宽 (40 kHz) 的典型参考噪声 70 mA(rms)
• 5.0 V，单电源操作
• 与交直流电流成正比的输出电压
• 出厂时校准灵敏度和静态输出电压实现更高精确度
• 稳定斩波实现极度稳定的静态输出电压
• 电源电压的成比例输出