ACS720: High Accuracy, Dual Fault, Galvanically Isolated Current Sensor in SOIC16 Widebody Package

ACS720是一种基于高精度的霍尔效应的电流传感器IC，具有多种可编程故障水平，用于工业和消费应用，专注于电机控制和功率逆变器级应用。雷竞技最新网址

One of the key benefits of the ACS720 is to provide high isolation with a reduced bill of materials made possible by the proprietary IC SOIC16W package. The ACS720 works off of a single 5 V supply while maintaining an output voltage swing from 0 to 3 V, with a stable zero current output of 1.5 V. This allows the ACS720 to operate off of a 5 V supply while having an output which is compatible with typical 3.3 V ADCs found on many MCUs. Furthermore, the ACS720’s high PSRR rejects the noise often found on the supplies in the power section of the PCB or system, maintaining high accuracy in
noisy environments.

该设备具有用户可配置的双故障功能。快速缓慢的故障输出允许短路和过电流故障检测。来自ACS720的电源的用户创建的电阻分压器用于设置故障级别。故障输出是开漏的，允许用户将其拉到MCU的兼容电压。开漏输出还允许实现简单的逻辑或多个传感器故障输出。

The ACS720 also integrates differential current sensing, which rejects external magnetic fields, greatly simplifying board layout in 3-phase motor applications.

由于Allegro的专利，数字温度补偿，最终为许多电流提供较小更经济的解决方案，在该开环传感器中实现了近闭环精度。
传感器传统上依赖雷竞技最新网址于闭环基于核心传感器的应用。

ACS720设置在小型表面安装SOIC16封装中。引线框架镀有100％哑光锡，其与标准引线（PB）无铅印电路板组装工艺兼容。在内部，除了倒装芯片的高温PB的焊球外，该装置无铅，目前免于RoHS。该设备在从工厂发货之前完全校准。

• 差分电流检测取消共模字段，简化PCB布局
• Two user-settable faults for fast short-circuit protection and slower overcurrent detection
• 我ndustry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
• 获得专利的集成数字温度补偿电路允许高精度在开环传感器中的温度高
• 1.0MΩ初级导体电阻对于低功耗和高浪涌电流能力
• 小型脚印，低调SOIC16包装适用于空间受限应用雷竞技最新网址
• 由于高DV / DT电压瞬变，集成屏蔽几乎消除了从电流导体到模具的电容耦合
• 5 V单电源操作0-3 V输出摆幅
• 输出电压与AC或DC电流成比例
• Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
• 3600 VRMS介电强度在UL60950-1下认证
• 高PSRR用于嘈杂的环境