ACS780数据手册传感器变送器的电流传感器规格书PDF

描述 Description

The Allegro ACS780xLR is a fully integrated current sensor linear IC in a new core-less package designed to sense AC and DC currents up to 100 A. This automotive-grade, low-profile (1.5 mm thick) sensor IC package has a very small footprint.

The Hall sensor technology also incorporates common-mode field rejection to optimize performance in the presence of interfering magnetic fields generated by nearby current-carrying conductors.

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 which the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the primary conductor to the Hall transducer and factory programming of the sensitivity and quiescent output voltage at the Allegro factory.

Chopper-stabilized signal path and digital temperature compensation technology also contribute to the stability of the device across the operating temperature range. 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 (>VCC / 2) when an increasing current flows through the primary copper conduction path (from terminal 5 to terminal 6), which is the path used for current sampling. The internal resistance of this conductive path is 200 μΩ typical, providing low power loss.

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 4, and 7), allowing the device to operate safely with voltages up to 100 V peak on the primary conductor.

The device is fully calibrated prior to shipment from the factory. The ACS780xLR 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.

特性 Features

• Core-less, micro-sized, 100 A continuous current package
• Ultra-low power loss: 200 μΩ internal conductor resistance
• Immunity to common-mode field interference
• Greatly improved total output error through digitally programmed and compensated gain and offset over the full operating temperature range
• Industry-leading noise performance through proprietary amplifier and filter design techniques
• 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
• Monolithic Hall IC for high reliability
• 4.5 to 5.5 V, single supply operation
• 120 kHz typical bandwidth
• 3.6 μs output rise time in response to step input current
• Output voltage proportional to AC or DC currents
• Factory-trimmed for accuracy
• Extremely stable quiescent output voltage
• AEC-Q100 automotive qualification

简介

ACS780属于传感器变送器的电流传感器。由制造生产的ACS780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。