A1171

更新时间： 2024-11-15 04:02:43

品牌	Logo	应用领域
急速微 - ALLEGRO		开关
页数	文件大小	规格书
9页	640K
描述
Micropower Ultrasensitive Hall Effect Switch

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A1171 数据手册

A1171

Micropower Ultrasensitive Hall Effect Switch

Features and Benefits

▪ 1.65 to 3.5 V battery operation

▪ Low supply current

Description

The A1171 integrated circuit is an ultrasensitive, Hall effect

switch with latched digital outputs and either unipolar or

▪ High sensitivity, B_OPtypically 30 G (3.0 mT)

▪ Operation with either north or south pole

▪ Configurable unipolar or omnipolar magnetic sensing

▪ Complementary, push-pull outputs

▪ Chopper stabilized

omnipolar magnetic actuation. It features operation at low

supply currents and voltages, making it ideal for battery-

operated electronics. The low operating supply voltage,

1.65 to 3.5V, anduniqueclockingalgorithmassistinreducing

the average operating power consumption. For example, the

power requirement is less than 15 μW with a 2.75 V supply.

▫ Superior temperature stability

▫ Extremely low switchpoint drift

▫ Insensitive to physical stress

Unlike more traditional Hall effect switches, theA1171 allows

the user to configure how the device is magnetically actuated.

Under default conditions the device activates output switching

witheitheranorthorsouthpolaritymagneticfieldofsufficient

strength. The magnetic actuation can be set via an external

selection pin to operate in a unipolar mode, switching only on

a north or south polarity but not both. Furthermore, the output

of theA1171 can be configured to switch either off or on in the

absence of any significant magnetic field. Lastly, the A1171

has two push-pull output structures.

▪ Solid state reliability

▪ Small size

Package: 6 pin DFN/MLP (suffix EW)

This polarity-independence, as well as the minimal power

requirements,allowstheA1171toeasilyreplacereedswitches,

Continued on the next page…

Not to scale

Functional Block Diagram

VDD

Clock/Logic

Amp

VOUTPS

Latch

Low-Pass

Filter

VOUTPN

Latch

SELECT

GND

1171-DS

12 3 4 5 6 7...9

中文翻译

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与A1171相关器件

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A1171EEWLT-P	ALLEGRO	获取价格	Micropower Ultrasensitive Hall Effect Switch
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A1173-LBL	ETC	获取价格	SPECIFICATION FOR APPROVAL
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