ACS770XCB：热增强，完全集成，基于霍尔效应的高精度线性电流传感器IC，具有100μΩ电流导体

Allegro™ACS770电流传感器IC系列为AC或DC电流检测提供经济和精确的解决方案。典型应用包括电机亚博尊贵会员控制，负载检测和管理，电源和DC-TO-DC转换器控制，逆变器控制和过电流故障检测。

The device consists of a precision, low-offset linear Hall circuit with a copper conduction path located near the die. Applied current flowing through this copper conduction path generates a magnetic field that is concentrated by a low magnetic hysteresis core, then converted by the Hall IC into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional output voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory. Proprietary digital temperature compensation technology greatly improves the IC accuracy and temperature stability without influencing the high bandwidth operation of the analog output.

High level immunity to current conductor dV/dt and stray electric fields is offered by Allegro proprietary integrated shield technology for low output voltage ripple and low offset drift in high-side, high voltage applications.

The output of the device has a positive slope (>V_CC/ 2对于双向装置）当增加电流流过初级铜传导路径（从端子4到端子5），这是用于电流采样的路径。该导电路径的内阻典型为100μΩ，提供低功率损耗。

The thickness of the copper conductor allows survival of the device at high overcurrent conditions. The terminals of the conductive path are electrically isolated from the signal leads (pins 1 through 3). This allows the ACS770 family of sensor ICs to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.

The device is fully calibrated prior to shipment from the factory. The ACS770 family is lead (Pb) free. All leads are plated with 100% matte tin, and there is no Pb inside the package. The heavy gauge leadframe is made of oxygen-free copper.

• Industry-leading total output accuracy achieved with new piecewise linear digital temperature compensation of offset and sensitivity
• 通过专有放大器和滤波器设计技术的行业领先的噪声性能
• 120 kHz typical bandwidth
• 4.1 μs output rise time in response to step input current
• Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals, and prevents offset drift in high-side, high voltage applications
• 通过数字编程和补偿增益和偏移在完全工作温度范围内极大地改善了总输出误差
• Small package size, with easy mounting capability
• 整体霍尔IC高可靠性
• 超低功耗：100μΩ内部导体电阻
• Galvanic isolation allows use in economical, high-side current sensing in high voltage systems
• 4.5至5.5 V，单电源操作
• 输出电压与AC或直流电流成比例
• Factory-trimmed for accuracy
• 极稳定的输出偏移电压
• Undervoltage lockout for V_CCbelow specification
• AEC-Q100 automotive qualified
• UL认证、文件。E316429