a1181 Allegro MicroSystems, Inc., a1181 Datasheet

a1181

Manufacturer Part Number

a1181

Description

Two-wire, Programmable, Chopper-stabilized, Unipolar Hall-effect Switch Microsystems

Manufacturer

Allegro MicroSystems, Inc.

Datasheet

1.A1181.pdf (14 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

a118186

Manufacturer:

HIT

Quantity:

1 000

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Supply Voltage

Reverse-Battery Voltage

Magnetic Flux Density

Package Power Dissipation

Junction Temperature, T

Operating Temperature Range, T

Storage Temperature Range

The “LH”

See typical application drawing for UA pinning.

B …………………………………… Unlimited

UA…………………………………. 206 °C/W

Suffix “E” …………….……. - 40 °C to + 85 °C

Suffix “L” …………………. - 40 °C to + 150 °C

SUBJECT TO CHANGE WITHOUT NOTICE

………………………… -65 °C to +170 °C

ABSOLUTE MAXIMUM RATINGS

……………………………….….248 °C/W

……………………………………… -18 V

…………………………………….. 26.5 V

PPD is based on a 0.062" thick FR4, single-sided board using 2 oz. copper, with a 0.55 mm

PRELIMINARY DATA SHEET

……………….. +170°C

ja,

Preliminary Data Sheet

A1180 – A1184

for use in high-temperature applications. This device uses a patented high

frequency chopper-stabilization technique on Allegro's new DABIC5

BiCMOS wafer fabrication process to achieve magnetic stability and to

eliminate offset inherent in single-element devices and from harsh-

application environments.

function to allow for external trimming of the operate point.

programming is performed after final packaging of the sensor and

placement of the Single In-Line Package (SIP) into the application. This

advanced feature allows for optimization of sensor switching performance

by effectively accounting for variations caused by magnet and SIP

placement tolerances.

the power supply protects against over-voltage conditions on the supply

line.

will switch HIGH in the presence of a sufficiently large south-pole magnetic

field and will switch LOW with the removal of the field. The A1180/2 has

the opposite polarity as the others, switching LOW in the presence of a

sufficient magnetic field and HIGH with the removal of the field.

most applications.

surface-mount applications; suffix “UA” is a three-lead ultra-mini Single

Inline Package (SIP) for through-hole mounting.

Programming software and/or hardware demonstration kits also available

see ASEK-01 on the Allegro web site, www.allegromicro.com.

FEATURES / BENEFITS

The A118X is a two-wire, unipolar, Hall-effect switch family designed

These devices provide on-chip transient protection. A zener clamp on

The output of the A118X FAMILY, with the exception of the A1180/2,

Two package styles provide a magnetically optimized package for

Factory programmed versions also available, see A1140/42/43/45.

Chopper Stabilization

I Extremely low switch-point drift

I Low stress sensitivity

One-time external programmability

I Operate Point

On-chip Protection

I Supply transient protection

I Robust ESD/EMC protection

I Reverse-battery protection

On-board Voltage Regulator

I 3.8 V to 24 V operation

The A118X FAMILY of devices incorporates a programmability

Two-Wire, Programmable, Chopper-Stabilized,

Suffix “LH” is a miniature low profile package for

Order by complete part number (i.e. A1182LUA).

area of copper attached to the ground lead.

Unipolar Hall-Effect Switch

The

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