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AH1921

更新时间： 2024-11-29 14:52:43

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描述
Micropower Omnipolar Hall Effect Switch

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AH1921 数据手册

AH1911/AH1921

ULTRA-LOW POWER DIGITAL OMNIPLOAR

HALL-EFFECT SWITCH

Description

Pin Assignments

The AH1911/AH1921 is an ultra-low power digital Omnipolar Hall

Effect switch IC from Diodes broad Hall Effect switches family.

Thanks to the hibernating clocking system, the average supply

current is only 1.6μA at 3V, which makes the AH1911/AH1921

perfectly fit battery-powered consumer products, Gas or water meter,

smoke detectors and IoT devices. The wider range of supply voltage

(1.6V to 5.5V) extends battery operating time and supports low

voltage system microcontrollers, which provides great flexibility for

system design. The advanced chopper stabilized design provides

superior stability on switch operating point over temperature and

supply voltage. The high ESD level up to 6kV helps to improve the

system robustness.

(Top View)

2 OUTPUT

1 VDD

GND 3

SC59

The single push-pull for AH1911 or open drain for AH1921 output can

be switched on with either South or North pole of sufficient strength.

When the magnetic flux density (B) perpendicular to the package is

larger than operate point (B_OP), the output will be turned on (pulled

low) and held until B is lower than release point (B_RP).

The AH1911/AH1921 comes with industry standard SC59 package.

Features

Applications



Omnipolar Operation (North or South Pole)

Supply Voltage of 1.6V to 5.5V

Micropower Operation



Smart Cover or Dock Detect for Cellular Phones and Tablet PCs

Gas or Water Consumption Measurement in Remote, Battery-

Operated Utility Meters

Chopper Stabilized Design Provides:



Medical Devices, IoT Systems

Superior Temperature Stability

Minimal Switch Point Drift

Level, Proximity and Position Switches

E-Locks, Smoke Detectors, Appliances

Enhanced Immunity to Physical Stress



AH1911 is Push-Pull Output and AH1921 is Open Drain Output

-40°C to +85°C Operating Temperature

High ESD Capability of 6kV (Human Body Model)

Small Low Profile, SC59 Package

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit (Note 4)

1.6V to 5.5V

VDD

1.6V to 5.5V

VDD

R_L

OUTPUT

AH1911

C_IN

AH1921

C_IN

GND

Note:

4. C_INis for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical and should be placed as close to

the VDD pin as possible.

1 of 9

www.diodes.com

September 2018

AH1911/AH1921

Document number: DS41109 Rev. 1 - 2

12 3 4 5 6 7...9

中文翻译

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AH1NABBO12	CIT	获取价格	Illuminated Pushbutton - 19mm
AH1NABBO6	CIT	获取价格	Illuminated Pushbutton - 19mm

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