Datasheet > A1388LUA-2-T

A1388LUA-2-T

更新时间： 2022-02-26 12:20:53

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
12页	842K
描述
Linear Hall-Effect Sensor ICs with Analog Output

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A1388LUA-2-T 数据手册

A1388 and A1389

Linear Hall-Effect Sensor ICs with Analog Output

Available in a Miniature, Low Profile Surface Mount Package

Features and Benefits

Description

• 5.0 V supply operation

New applications for linear output Hall-effect sensors, such

as displacement and angular position, require higher accuracy

and smaller package sizes. The Allegro A1388 and A1389

linearHall-effectsensorICshavebeendesignedspecificallyto

meet both requirements. These temperature-stable devices are

available in both surface-mount and through hole packages.

• QVO temperature coefficient programmed at Allegro^™for

improved accuracy

• Miniature package options

• High bandwidth, low noise analog output

• High speed chopping scheme minimizes QVO drift across

operating temperature range

• Temperature-stable quiescent voltage output and sensitivity

• Precise recoverability after temperature cycling

• Output voltage clamps provide short circuit diagnostic

capabilities

• Undervoltage lockout (UVLO)

• Wide ambient temperature range: –40°C to 150°C

• Immune to mechanical stress

• Enhanced EMC performance for stringent automotive

applications

The accuracy of each device is enhanced via end-of-line

optimization. Each device features non-volatile memory to

optimize device sensitivity and the quiescent voltage output

(QVO: output in the absence of a magnetic field) for a given

application or circuit. This A1388 and A1389 optimized

performance is sustained across the full operating temperature

range by programming the temperature coefficient for both

sensitivity and QVO at Allegro end-of-line test.

These ratiometric Hall-effect sensor ICs provide a voltage

output that is proportional to the applied magnetic field. The

quiescent voltage output is adjusted around 50% of the supply

voltage.

3-pin ultramini SIP

1.5 mm × 4 mm × 3 mm

Packages

3-pin SOT23-W

(suffix UA)

2 mm × 3 mm × 1 mm

(suffix LH)

The features of these linear devices make them ideal for use in

automotiveandindustrialapplicationsrequiringhighaccuracy,

and they operate across an extended temperature range,

–40°C to 150°C.

Each BiCMOS monolithic circuit integrates a Hall element,

temperature-compensating circuitry to reduce the intrinsic

Continued on the next page…

Approximate footprint

Functional Block Diagram

V+

VCC

VOUT

Sensitivity and

Sensitivity TC

Offset and

Offset TC

C_BYPASS

GND

A13889-DS, Rev. 1

12 3 4 5 6 7...12

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