A1384LLHLT-T 查看數據表（PDF） - Allegro MicroSystems

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A1384LLHLT-T

Programmable Linear Hall Effect Sensors with Analog Output Available in a Miniature Thin Profile Surface Mount Package

Allegro MicroSystems 

A1381, A1382, A1383, and A1384

Programmable Linear Hall Effect Sensors with Analog Output

Available in a Miniature Thin Profile Surface Mount Package

Features and Benefits

▪ 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

Packages

3 pin surface mount

SOT23-W (suffix LH)

3 pin ultramini SIP

(suffix UA)

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 through-

hole 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 user-

adjustable. 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.

Not to scale

Continued on the next page…

V+

VCC

Functional Block Diagram

To all subcircuits

CBYPASS

A1381-DS, Rev. 1

Amp

VOUT

Out

(Programming)

GND

Hall Drive Circuit

Gain

Gain Temperature

Coefficient

Offset

Trim Control

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