The ACS756KCA-050B-PFF-T is a fully integrated, Hall-effect-based linear current sensor IC with 3 kVRMS voltage isolation and low resistance current conductors
The Allegro ACS756 current sensor IC family provides an affordable and accurate solution for AC or DC current sensing in industrial, automotive, commercial, and communication systems. The device is packaged for easy implementation. Typical applications include motor control, load detection and management, power supplies, and overcurrent protection.
The device consists of a precise, low-offset linear Hall sensor circuit with a copper current path close to the wafer. The current applied through this copper current path generates a magnetic field that can be sensed by the integrated Hall IC and converted into a proportional voltage. By bringing the magnetic signal closer to the Hall sensor, the device accuracy is optimized. Accurate, proportional voltages are provided by a stabilized chopper-type low-bias BiCMOS Hall IC that is factory-programmed for precision.
The output of the device has a positive slope (>VCC/2) when the current rises through the main copper conduction path (from terminal 4 to terminal 5) that is used as the current sensing pathway. The internal resistance of this conduction path is typically 130 μΩ, which has low power loss.
The size of the copper wire allows the device to operate under overcurrent conditions of up to 5×. The terminal end of the conduction path is electrically insulated from the sensor pins (pins 1 through 3). This allows the ACS756 sensor IC family to be used in applications where electrical isolation is required without the use of photoisolators or other expensive insulation technologies.
The device is fully calibrated prior to shipment. The ACS75x series is lead-free. All pins are 100% matte tin plated, and there is no lead present in the package. A large number of gauge pin frames are manufactured from oxygen-free copper.
特点 优势
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通过专利放大器和滤波器设计工艺实现行业领先的噪音性能
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总输出误差为 .8%（当 TA = 25°C时）
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小型封装尺寸，安装简便
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高可靠性的单片霍尔 IC
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超低功率损耗：130 µΩ 内部传导电阻
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3 kVRMS 最低绝缘电压（1-3号引脚与4-5号引脚之间）
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3.0 至 5.0 V, 单电源操作
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3 µs 输出上升时间，对应步进输入电流
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20 或 40 mV/A 输出灵敏度
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输出电压与交流或直流电流成比例
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出厂时精确度校准
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极稳定的输出偏置电压
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近零的磁滞
//www.chip100.com/