Datasheet > A3213_16

A3213_16

更新时间： 2024-09-16 01:19:23

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
11页	654K
描述
Micropower Ultra-Sensitive Hall-Effect Switches

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A3213_16 数据手册

A3213 and A3214

Micropower Ultra-Sensitive Hall-Effect Switches

FEATURES AND BENEFITS

DESCRIPTION

• AEC-Q100 automotive qualified

• Micropower operation

• Operate with north or south pole

• 2.4 to 5.5 V battery operation

• Chopper stabilized

□ Superior temperature stability

□ Extremely low switchpoint drift

□ Insensitive to physical stress

• High ESD protection

The A3213 and A3214 integrated circuits are ultra-sensitive,

pole-independent Hall-effect switches with a latched digital

output. They are especially suited for operation in battery-

operated, hand-held equipment such as cell and cordless

telephones and palmtop computers. A 2.4 to 5.5 V operation

and a unique clocking scheme reduce the average operating

power requirements: the A3213 to 825 µW, the A3214 to

14 µW (typical, at 2.75 V). Except for operating duty cycle

and average operating current, the A3213 and A3214 are

identical.

• Solid-state reliability

• Small size

Unlike other Hall-effect switches, either a north or south

pole of sufficient strength will turn the output on; in the

absence of a magnetic field, the output is off. The polarity

independence and minimal power requirement allows these

devices to easily replace reed switches for superior reliabil-

ity and ease of manufacturing, while eliminating the require-

ment for signal conditioning.

• Easily assembly into applications due to magnetic pole

independence

Packages:

3 pin surface mount

SOT23-W (suffix LH)

3 lead ultramini SIP

(suffix UA)

Improved stability is made possible through chopper sta-

bilization (dynamic offset cancellation), which reduces the

residual offset voltage normally caused by device overmold-

ing, temperature dependencies, and thermal stress.

Continued on the next page…

Not to scale

SUPPLY

SWITCH

TIMING

LOGIC

OUTPUT

GROUND

Dwg. FH-020-5

Functional Block Diagram

27622.62-DS Rev. 27

12 3 4 5 6 7...11

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