The ACS758KCB-150U-PFF-T is a thermally enhanced, fully integrated, Hall-effect-based linear current sensor IC with a 100 μΩ current conductor
The Allegro® ACS758 current sensor IC family provides an affordable and accurate solution for AC or DC current sensing. Typical applications include motor control, load detection and management, power supply and DC-to-DC converter control, inverter control, and overcurrent fault detection.
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. The accurate, proportional output voltage is provided by a stabilized chopper-type low-bias BiCMOS Hall IC that is shipped with precision programming.
Allegro's exclusive integrated screen technology provides high immunity to current conductor dV/dt signals and stray electric fields, ensuring low output voltage ripple and low bias drift in high-end, high-voltage applications.
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 path. The internal resistance of this conduction path is typically 100 μΩ, which has a low power loss.
The thickness of the copper wire allows the device to operate under high overcurrent conditions. The terminal end of the conduction path is electrically insulated from the sensor pins (pins 1 through 3). This allows the ACS758 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 ACS758 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 made of oxygen-free copper.
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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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集成屏蔽可大幅减少因 dV/dt 信号导致电流导体至晶片的电容耦合，并可防止高端、高电压应用中的偏置漂移。
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通过过温增益和偏置修正实现总输出误差减少
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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：100 µΩ 内部传导电阻
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绝缘设计可实现高电压系统中经济实惠的高端电流感测
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3.0 至 5.5 V, 单电源操作
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120 kHz 典型带宽
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3 µs 输出上升时间，对应步进输入电流
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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
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