Datasheet > AH1895

AH1895

更新时间： 2023-12-06 20:11:44

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
10页	303K
描述
Micropower Omnipolar Hall Effect Switch

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AH1895 数据手册

AH1895

MEDIUM SENSITIVITY MICROPOWER

OMNIPLOAR HALL-EFFECT SWITCH

Description

Pin Assignments

The AH1895 is a medium sensitivity micropower Omnipolar Hall effect

switch IC with internal pull up and pull down capability. Designed for

portable and battery powered equipment such as cellular phones and

portable PCs to home appliances and industrial applications, the

average supply current is only 4.3uA at 1.85V. To support portable

equipment the AH1895 can operate over the supply range of 1.6V to

3.6V and uses a hibernating clocking system to minimize the power

consumption. To minimize PCB space the AH1895 is available in

small low profile X1-DFN1216-4 and SOT553 packages.

(Top View)

X1-DFN1216-4

(Top View)

The output is activated with either a north or south pole of sufficient

magnetic field strength. When the magnetic flux density (B)

perpendicular to the package is larger than operate point (Bop), the

output will be turned on (pulled low) and held until B is lower than

release point (Brp). The output will remain off when there is no

magnetic field.

SOT553

Features

Applications



Omnipolar Operation (North or South pole)

Supply Voltage of 1.6V to 3.6V

Medium Sensitivity



Open and Close Detect for Cellular Phones

Holster or cover detect for cellular phones and Tablet PCs

Cover or Display Switches in Portable PCs

Digital Still, Video Cameras and Handheld Gaming Consoles

Door, Lids and Tray Position Switches

Micropower Operation

Chopper Stabilized Design Provides:

Superior Temperature Stability

Minimal Switch Point Drift

Level, Proximity and Position Switches

Contact-Less Switches in Home Appliances and Industrial

Applications

Enhanced Immunity to Physical Stress



No External Pull-up Resistors Required

Good RF Noise Immunity

-40°C to +85°C Operating Temperature

High ESD capability of 8kV (Human Body Model)

Small Low Profile X1-DFN1216-4 and SOT553 Packages

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) compliant.

2. See http://www.diodes.com/quality/lead_free.html 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. C_INis for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical.

1 of 10

July 2013

AH1895

www.diodes.com

Document number: DS35742 Rev. 1 - 2

12 3 4 5 6 7...10

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