A1147_06 Datasheet

IC型號：
A1147_06
PDF描述：
Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipo...
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330.41KB
PDF頁數(shù)：
12頁
芯片廠家：
ALLEGRO

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A1147 and A1148

Low Current Ultrasensitive Two-Wire Chopper-Stabilized

Unipolar Hall Effect Switches

Features and Benefits

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Chopper stabilization

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Low switchpoint drift over operating

temperature range

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Low sensitivity to stress

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Factory programmed at end-of-line for optimized

switchpoints

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On-chip protection

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Supply transient protection

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Reverse-battery protection

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On-board voltage regulator

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3.5 to 24 V operation

Description

The A1147 and A1148 devices are two-wire, unipolar, Hall

effect switches that are factory-programmed at end-of-line to

optimize ultrasensitive magnetic switchpoint accuracy. These

devices use a patented high frequency chopper-stabilization

technique, produced using the Allegro advanced BiCMOS

wafer fabrication process, to achieve magnetic stability and

to eliminate offset inherent in single-element devices exposed

to harsh application environments.

Commonly found in a number of automotive applications,

these switches are utilized to sense seat track position, seat

belt buckle presence, hood/trunk latching, and shift selector

position. Two-wire unipolar switches, such as the A1147

and A1148, are particularly advantageous in price-sensitive

applications because they require one less wire for operation

than do switches with the more traditional open-collector output.

Additionally, the system designer inherently gains diagnostics

because there is always output current flowing, which should

be in either of two narrow ranges. Any current level not within

these ranges indicates a fault condition. These devices also

Packages: 3 pin SOT23W (suffix LH), and

3 pin SIP (suffix UA)

Continued on the next page鈥?/div>

Not to scale

Functional Block Diagram

V+

VCC

Regulator

To All Subcircuits

0.01 uF

Dynamic Offset

Cancellation

Clock/Logic

Sample and Hold

Low-Pass

Filter

Amp

GND

Package UA Only

GND

A1147-DS, Rev. 8

型號

版本

描述

廠商

下載
A1140

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall-Effect S...

A1140
A1140

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall-Effect S...

ALLEGRO [A...

A1140
A1141

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect S...

A1141
A1141

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect S...

allegromicro

A1141
A1142

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect S...

A1142
A1142

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect S...

allegromicro

A1142
A1143

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect S...

A1143
A1143

英文版

Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect S...

allegromicro

A1143
A1145

英文版

Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Eff...

A1145
A1145

英文版

Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Eff...

ALLEGRO [A...

A1145
A1146

英文版

Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Eff...

A1146
A1146

英文版

Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Eff...

ALLEGRO [A...

A1146
A1147

英文版

Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipo...

A1147
A1147

英文版

Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipo...

ALLEGRO [A...

A1147
A1148

英文版

Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipo...

A1148
A1148

英文版

Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipo...

ALLEGRO [A...

A1148
A114E

英文版

IC

ETC

A114E
A114HI

英文版

Ultra-High Isolation, 1.5W Single & Dual Output DC/DC Conver...

MPD

A114HI
A114017

英文版

SEAL BLANK 16AWG

A114017
A114EHI

英文版

Low Cost, Miniature DIP 1W, Very High Isolation DC/DC Conver...

MPD

A114EHI

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