A1382中文资料可编程线性霍尔效应传感器与模拟输出可在一个小型薄型表面贴装封装数据手册Allegro规格书

描述 Description

New applications for linear output Hall effect sensors, such as displacement, angular position, and current measurement, require high accuracy in conjunction with small package size. The Allegro® A138x family of programmable linear Hall effect sensors was designed specifically to achieve both goals.

These temperature-stable devices are available in a miniature surface mount package (SOT23-W) and an ultramini throughhole single-in-line package. The accuracy of these devices is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device.

These ratiometric Hall effect sensors provide a voltage output that is proportional to the applied magnetic field. Both the quiescent voltage output and magnetic sensitivity are useradjustable. The quiescent voltage output can be set around 50% of the supply voltage, and the sensitivity adjusted between 2 mV/G and 9 mV/G over the device family. Programming selections also exist for output polarity and temperature compensation. The features of this linear family make it ideal for high accuracy requirements of automotive and industrial applications, and performance is guaranteed over an extended temperature range, –40°C to 150°C.

Each BiCMOS monolithic circuit integrates a Hall element,temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique.

The A138x sensors are provided in a 3 pin ultramini single-in-line package (UA suffix), and a 3 pin surface mount SOT-23W package(LH suffix).

特性 Features

▪ Customer programmable offset, sensitivity, sensitivity temperature coefficient, and polarity
▪ Programmability at end-of-line
▪ Ratiometric sensitivity, quiescent voltage output, and clamps for interfacing with application DAC
▪ Temperature-stable quiescent voltage output and sensitivity
▪ Precise recoverability after temperature cycling
▪ Output voltage clamps provide short circuit diagnostic capabilities
▪ Wide ambient temperature range: –40°C to 150°C
▪ Immune to mechanical stress
▪ Miniature package options

简介

A1382属于传感器变送器的磁性传感器-线性罗盘（IC）。由制造生产的A1382磁性传感器 - 线性，罗盘（IC）该系列产品可用于将磁场强度作为一个可变数量进行测量，而相比之下，类似产品仅检测是否存在强度超过某个限值的磁场。常见的应用包括测量地球磁场，以类似于传统罗盘的方式进行定向，市面上的一些器件允许以相对于磁场的物理方向直接读取测量值。