ACS724 and ACS725: High-Accuracy, Isolated Current Sensor with Stray Field Rejection

The Allegro ACS724/ACS725 family of current sensor ICs are economical and precise solutions for AC or DC current sensing in industrial, automotive, consumer, and communications systems. They are offered in multiple compact packages that offer high level of integration that fits various applications needs.. These devices consist of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. The current is sensed differentially in order to reject stray fields, improving accuracy in magnetically noisy environments. The current conductor is inherently isolated from the device signal leads due to it’s internal structure which results in high isolation voltage rating for the various offered packages. All of these devices offer very low ohmic losses as low as265μΩ..

ACS724 / ACS725器件采用小型薄型表面贴装SOIC8（LC）和定制SOIC16封装（MA＆MC）。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。

The MA & LC packages offer high Isolation voltage with a max nominal current of 50A, while the MC (20Mil) package offers up to 90A nominal current measurement. These current ratings vary depending on the ambient operating temperatures.

Typical Applications:

• Motor control
• DC / DC转换器
• XEV onboard充电器（OBC）
• 太阳能逆变器
• 负载检测和管理
• Switched mode power supplies
• 过电流故障保护
  

• AEC-Q100合格
• Differential Hall sensing rejects common-mode fields
• 1.2 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
• 集成屏蔽几乎消除了电流耦合从电流导体到模具，大大抑制了由于高DV / DT瞬变引起的输出噪声
• 行业领先的噪声性能，通过专有放大器和过滤器设计技术具有极大提高的带宽
• 高带宽120 kHz模拟输出，用于控制应用中的更快响应时间亚博尊贵会员
• Filter pin allows user to filter the output for improved resolution at lower bandwidth
• Patented integrated digital temperature compensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor
• Filter pin simplifies bandwidth limiting for better resolution at lower frequencies
• 5 V，单电源操作