A3250EUA-T Datasheet

IC型號：
A3250EUA-T
PDF描述：
Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...
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A3250 and A3251

Field-Programmable, Chopper-Stabilized

Unipolar Hall-Effect Switches

Features and Benefits

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Chopper stabilization for stable switchpoints throughout

operating temperature range

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Externally programmable operate point (through VCC

pin)

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On-board voltage regulator for 4.2 V to 24 V operation

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On-chip protection against:

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Supply transients

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Output short-circuits

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Reverse-battery condition

Description

The A3250 and A3251 are field-programmable, chopper-

stabilized, unipolar Hall-effect switches designed for use in

high-temperature applications. These devices use a chop-

per-stabilization technique to eliminate offset inherent in

single-element devices.

The A3250 and A3251 are externally programmable

devices. The devices have a wide range of programmabil-

ity of the magnetic operate point (B

) while the hysteresis

remains fixed. This advanced feature allows for optimiza-

tion of the sensor switchpoint and can drastically reduce

the effects of variations found in a production environment,

such as magnet and device placement tolerances.

These devices provide on-chip transient protection. A Zener

clamp on the power supply protects against overvoltage

conditions on the supply line. These devices also include

short-circuit protection on the output.

The output of the A3250 switches LOW when subjected

to a south-polarity magnetic field with a flux density that

exceeds the threshold for B

, and switches HIGH when the

Package: 3 pin SOT89 (suffix LT) and

3 pin SIP (suffix UA)

Continued on the next page鈥?/div>

Not to scale

Functional Block Diagram

VCC

Program/Lock

Programming

Logic

Regulator

Offset Adjust

Sample and Hold

Dynamic Offset

Cancellation

VOUT

Amp

Current Limit

Low-Pass

Filter

GND

3250-DS Rev. 3

型號

版本

描述

廠商

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A3250

英文版

Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

A3250
A3250

英文版

Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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A3250
A3251

英文版

Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

A3251
A3251

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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A3251
A325R

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Compact, Regulated, 3W Single & Dual Output DC/DC Converters

MPD

A325R
A325RI

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High Isolation, 2W & 3W Single & Dual Output DC/DC Converter...

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A325RI
A325RW

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Wide Input Range, 3W Single & Dual Output DC/DC Converters

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A325RW
A325051

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ETC

A325051
A325060

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ETC

A325060
A325ERW

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Low Cost, Wide Input, 3W Single & Dual Output DC/DC Converte...

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A325ERW
A3250_06

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

A3250_06
A3250_06

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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A3250_06
A3250JUA

英文版

Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

A3250JUA
A3250JUA

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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A3250JUA
A3250LUA

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

A3250LUA
A3250LUA

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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A3250LUA
A3251ELT

英文版

Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN

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A3251JUA

英文版

Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

A3251JUA
A3251JUA

英文版

Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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A3251JUA
A3251LUA

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Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect ...

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