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高灵敏度、1 MHz 基于 GMR 的电流传感器 IC，采用节省空间的低电阻 QFN 封装

ACS70331

ACS70331 数据表

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Description

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ACS70331 是 Allegro 首款集成高灵敏度电流传感器 IC，适用于 <5 A电流检测应用。它结合了比传统霍尔效应传感器灵敏 25 倍的巨磁阻 (GMR) 技术，以感应电流产生的磁场，该磁场通过低电阻、集成一次导体内电流产生。

模拟输出提供低噪声的高速信号，它与流经一次导体的电流成正比。该器件的响应时间通常为 535 ns。ACS70331 提供四种工厂编程灵敏度和偏置电平，可在所需电流测量范围内优化性能。

GMR 元件相对于集成电流导体的差分配置显著抑制了杂散磁场，即使在嘈杂的磁环境中也能够稳定工作。

ACS70331 采用 3.3 V 单电源供电，工作温度范围为 -40°C 至 85°C。它采用节省空间的扁平表面贴装 QFN 封装。

高灵敏度电流传感器 IC，用于感测高达 5 A（直流或交流）
1 MHz 带宽，响应时间 <550 ns
低噪声：8 mA(rms)，1 MHz
模拟输出与交直流电流成正比
单 3.3 V 电源操作
高直流 PSRR 可使用低精度电源或电池（3 至 4.5 V操作）
1.1 mΩ 一次导体电阻导致功率损失低
小表面封装QFN封装用于空间狭小应用

Part Number Specifications and Availability

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Part Number	Current Measurement Range (A)	Isolation Voltage (Vrms)	Bandwidth (kHz)	Supply Voltage (V)	Primary Conductor Resistance (mΩ)	Package	Features	Part Composition / RoHS Data	Check Stock
ACS70331EESATR-005B3	±5	-	1000	3.3	1.10	12-Pin QFN	-	View Data	Check Distributor Stock
ACS70331EESATR-005U3	5	-	1000	3.3	1.10	12-Pin QFN	-	View Data	Check Distributor Stock
ACS70331EESATR-2P5B3	±2.5	-	1000	3.3	1.10	12-Pin QFN	-	View Data	Check Distributor Stock
ACS70331EESATR-2P5U3	2.5	-	1000	3.3	1.10	12-Pin QFN	-	View Data	Check Distributor Stock
ACS70331EOLCTR-005B3	±5	-	1000	3.3	1.70	8-Pin SOIC	-	View Data	Check Distributor Stock
ACS70331EOLCTR-005U3	5	-	1000	3.3	1.70	8-Pin SOIC	-	View Data	Check Distributor Stock
ACS70331EOLCTR-2P5B3	±2.5	-	1000	3.3	1.70	8-Pin SOIC	-	View Data	Check Distributor Stock
ACS70331EOLCTR-2P5U3	2.5	-	1000	3.3	1.70	8-Pin SOIC	-	View Data	Check Distributor Stock

Part Number	Current Measurement Range (A)	Bandwidth (kHz)	Supply Voltage (V)	Primary Conductor Resistance (mΩ)	Package
ACS70331EESATR-005B3	±5	1000	3.3	1.10	12-Pin QFN
ACS70331EESATR-005U3	5	1000	3.3	1.10	12-Pin QFN
ACS70331EESATR-2P5B3	±2.5	1000	3.3	1.10	12-Pin QFN
ACS70331EESATR-2P5U3	2.5	1000	3.3	1.10	12-Pin QFN
ACS70331EOLCTR-005B3	±5	1000	3.3	1.70	8-Pin SOIC
ACS70331EOLCTR-005U3	5	1000	3.3	1.70	8-Pin SOIC
ACS70331EOLCTR-2P5B3	±2.5	1000	3.3	1.70	8-Pin SOIC
ACS70331EOLCTR-2P5U3	2.5	1000	3.3	1.70	8-Pin SOIC

Documentation and Resources

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Documents Found: 1

Document Type	Document Name
FAQ	Current Sensors FAQ

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Documents Found: 5

Document Type	Document Name
Gerber File	ACS70331EESA Gerber Files
Gerber File	ACS70331EOLC Gerber Files
Gerber File	ASEK70331 Gerber Files
Simulation Tool	Current Sensor Error and Resolution
SPICE Model	ACS LTspice Library

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Documents Found: 1

Document Type	Document Name
Third Party Tool	Mikroe Hall Current 4 Click