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A1126LLHLX-T

更新时间： 2024-01-31 00:14:30

品牌	Logo	应用领域
急速微 - ALLEGRO		开关
页数	文件大小	规格书
14页	274K
描述
Chopper Stabilized Omnipolar Hall-Effect Switch

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A1126LLHLX-T 数据手册

A1126

Chopper Stabilized Omnipolar Hall-Effect Switch

Description

Features and Benefits

• Omnipolar operation

The A1126 integrated circuit is an omnipolar, ultrasensitive

Hall-effect switch with a digital output. This device has an

integrated regulator permitting operation to 24 V.

• Low switchpoint drift

• Superior temperature stability

• Insensitive to physical stress

• Reverse battery protection

• Robust EMC capability

• Robust ESD protection

Thisdeviceisespeciallysuitedforoperationthroughextended

temperature ranges, up to 150°C. Superior high-temperature

performance is made possible through an Allegro^®patented

dynamic offset cancellation, which reduces the residual offset

voltage normally caused by device overmolding, temperature

excursions, and thermal stress.

Packages:

The A1126 Hall-effect switch includes the following on a

single silicon chip: voltage regulator, Hall-voltage generator,

small-signal amplifier, chopper stabilization, Schmitt trigger,

and a short circuit protected open-drain output. Advanced

BiCMOSwaferfabricationprocessingisusedtotakeadvantage

of low-voltage requirements, component matching, very low

input-offset errors, and small component geometries.

3-pin SOT23-W

2 mm × 3 mm × 1 mm

(suffix LH)

3-pin ultramini SIP

1.5 mm × 4 mm × 3 mm

(suffix UA)

Not to scale

The omnipolar operation of the A1126 allows activation with

either a north or a south polarity field of sufficient strength.

In the absence of a magnetic field, the output is off. This

patented magnetic-polarity–independence feature makes

this device an excellent replacement for reed switches, with

improved ease of manufacturing, because the A1126 does not

Approximate footprint

Continued on the next page…

Functional Block Diagram

VOUT

VCC

To all subcircuits

Regulator

Omnipolar

Switchpoints

Control

Current

Limit

Signal

Recovery

Amplifier

GND

A1126-DS

12 3 4 5 6 7...14

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