A1221

更新时间： 2024-11-26 06:34:19

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
13页	281K
描述
Chopper Stabilized Precision Hall Effect Latches

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中文翻译

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数据手册

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A1221 数据手册

A1220, A1221, and A1222

Chopper Stabilized Precision Hall Effect Latches

Features and Benefits

Description

▪ Symmetrical latch switchpoints

▪ Resistant to physical stress

▪ Superior temperature stability

▪ Output short-circuit protection

▪ Operation from unregulated supply down to 3 V

▪ Reverse battery protection

The A1220, A1221, and A1222 Hall-effect sensor ICs are

extremely temperature-stable and stress-resistant devices

especiallysuitedforoperationoverextendedtemperatureranges

to 150°C. Superior high-temperature performance is made

possiblethroughdynamicoffsetcancellation,whichreducesthe

residualoffsetvoltagenormallycausedbydeviceovermolding,

temperature dependencies, and thermal stress. Each device

includesonasinglesiliconchipavoltageregulator,Hall-voltage

generator,small-signalamplifier,chopperstabilization,Schmitt

trigger, and a short-circuit protected open-collector output to

sink up to 25 mA. A south pole of sufficient strength turns the

output on. A north pole of sufficient strength is necessary to

turn the output off.

▪ Solid-state reliability

▪ Small package sizes

Packages:

An onboard regulator permits operation with supply voltages

of 3 to 24 V. The advantage of operating down to 3 V is that

the device can be used in 3-V applications or with additional

external resistance in series with the supply pin for greater

protection against high voltage transient events.

Two package styles provide magnetically optimized packages

for most applications. Package type LH is a modified 3-pin

SOT23WsurfacemountpackagewhileUAisathree-pinultra-

mini SIP for through hole mounting. Both packages are lead

(Pb) free, with 100% matte tin plated leadframes.

3-pin SOT23W (suffix LH)

3-pin SIP (suffix UA)

Not to scale

Functional Block Diagram

VCC

Regulator

To All Subcircuits

VOUT

Low-Pass

Filter

Amp

Control

Current Limit

GND

A1220-DS, Rev. 8

12 3 4 5 6 7...13

中文翻译

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与A1221相关器件

型号	品牌	获取价格	描述	数据表
A1221ELHLT-T	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221ELHLT-T2	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221ELHLX-T	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221EUA-T	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221LLHLT-T	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221LLHLT-T2	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221LLHLX-T	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1221LUA-T	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1222	ALLEGRO	获取价格	Chopper Stabilized Precision Hall Effect Latches
A1-2226SCC	HRS	获取价格	Wire Terminal