A1386传感器变送器的磁性传感器-线性罗盘（IC）规格书PDF中文资料

A1386属于传感器变送器的磁性传感器-线性罗盘（IC）。由Allegro MicroSystems制造生产的A1386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。

描述 Description

The Allegro® A1386 programmable, linear, Hall effect sensor IC is designed for low power, high accuracy, and small package size applications. The accuracy of this device is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device.

The A1386 has two operating modes, normal and low power. In normal operation mode the A1386 operates much like its predecessors, the A1381, A1382, A1383, and A1384, as a highly accurate, user-programmable linear sensor IC with a ratiometric output. In low power mode, the device actually disengages some internal components in order to reduce power consumption. Although the accuracy of the device is substantially reduced during low power operation, it remains effective as a detector of magnetic regions (such as north and south poles on a rotating ring magnet). This unique feature allows the device to be used in systems that are put to sleep, during which time there may be only 3 V available, or in applications that have start-up conditions where the available supply voltage may drop below 4.5 V for a period of time.

Features and Benefits

• Low power consumption using 3 V supply

• Factory programmed sensitivity temperature coefficient

(0.13/°C nominal)

• 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

• Resistant to mechanical stress

• Miniature package options