ACS70331数据手册传感器变送器的电流传感器规格书PDF

描述 Description

The ACS70331 is Allegro’s first integrated, high sensitivity, current sensor IC for <5 A current sensing applications. It incorporates giant magneto-resistive (GMR) technology that is 25 times more sensitive than traditional Hall-effect sensors to sense the magnetic field generated by the current flowing through the low resistance, integrated primary conductor.

The analog output provides a low noise high-speed signal, which is proportional to the current flowing through the primary. The response time of the part is typically 535 ns. The ACS70331 is offered in four factory-programmed sensitivity and offset levels to optimize performance over the desired current measurement range.

The differential configuration of the GMR elements, relative to the integrated current conductor, provides significant rejection of stray magnetic fields, resulting in stable operation even in magnetically noisy environments.

The ACS70331 operates from a single 3.3 V power supply and is qualified over the full commercial temperature range of –40°C to 85°C. It is offered in a low-profile space-saving surface mount QFN and SOIC packages.

特性 Features

• High sensitivity current sensor IC for sensing up to 5 A (DC or AC)
• 1 MHz bandwidth with response time <550 ns
• Low noise: 8 mA(rms) at 1 MHz
• Non-ratiometric, analog output proportional to AC and DC current
• Single 3.3 V supply operation
• High DC PSRR enables use with low accuracy power supplies or batteries (3 to 4.5 V operation)
• 1.1 mΩ primary conductor resistance results in low power loss
• Small surface mount QFN-12 and SOIC-8 packages for space-constrained applications

简介

ACS70331属于传感器变送器的电流传感器。由制造生产的ACS70331电流传感器电流传感器用于检测并响应电线或电路中的电流变化。传感器类型包括电流开关式、磁通门式、霍尔效应式、电流指示器、电流传感器、磁调制器、磁阻式和变压器式（带调节功能），电流检测范围可编程设置在 5mA 至 2500A 之间，可用于测量交流或直流电流。