ACS717: High Isolation, Linear Current Sensor IC with 850 μΩ Current Conductor

Allegro ACS717电流传感器IC是工业，商业，通信系统中的AC或DC电流感应的经济高度隔离解决方案。小包装是空间受限应用的理想选择，尽管宽体提供高隔离所需的爬电和间隙。雷竞技最新网址典型应用包括电机雷竞技最新网址控制，负载检测和管理，交换模式电源和过电流故障保护。

该装置由低偏移线性霍尔传感器电路组成，具有位于模具表面附近的铜传导路径。流过该铜传导路径的施加电流产生由集成霍尔IC感测的磁场并转换成比例电压。通过磁场附近到霍尔换能器的优化器件精度优化。比例电压由低偏移，斩波器稳定的BICMOS Hall IC提供，其在包装后被编程为精度。当增加电流流过初级铜传导路径（从引脚1到4，引脚5到8）时，该装置的输出具有正斜率，这是用于电流检测的路径。该导电路径的内部电阻为0.85mΩ，典型提供低功率损耗。

The terminals of the conductive path are electrically isolated from the sensor leads (pins 10 through 15). This allows the ACS717 current sensor IC to be used in high-side current sense applications without the use of high-side differential amplifiers or other costly isolation techniques.

ACS717以小型低轮廓的表面安装SOICW16封装（后缀MA）提供。该器件是铅（Pb），可用100％哑光锡引线框架电镀。该设备在从工厂发货之前完全校准。

• IEC/UL 60950-1 Ed. 2 certified to:
  • 介电强度= 4800 VRMS（测试60秒）
  • Basic Isolation = 1550 Vpeak
  • Reinforced Isolation = 800 Vpeak
• Small footprint, low-profile SOIC16 wide-body package suitable for space constrained applications that require high galvanic isolation
• 0.85 mΩ primary conductor for low power loss and high inrush current withstand capability
• Low, 400 μA_RMS√Hz noise density results in typical input referred noise of 70 mA(rms) at max bandwidth (40 kHz)
• 3.3 V, single supply operation
• Output voltage proportional to AC or DC current
• 工厂修剪灵敏度和静止输出电压，提高精度
• Chopper stabilization results in extremely stable quiescent output voltage
• Ratiometric output from supply voltage