Diodes AH1902 Manuel d'utilisateur télécharger pdf

AH1902

Document number: DS36533 Rev. 2 - 2

1 of 10

www.diodes.com

January 2014

NEW PRODUCT

H1902

HIGH SENSITIVITY MICROPOWER

OMNIPLOAR HALL-EFFECT SWITCH

Description

The AH1902 is a high sensitivity micropower Omnipolar Hall effect

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

portable and battery powered consumer equipment such as cellular

phones and portable PCs to office equipment, home appliances and

industrial applications, the average supply current is only 4.3uA at

1.8V. To support potable equipment the AH1902 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

AH1902 is available in small low profile X1-DFN1216-4 and X2-

DFN2015-6 packages.

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).

Features

• Omnipolar Operation (North or South Pole)

• Supply Voltage of 1.6V to 3.6V

• High Sensitivity

• Micropower Operation

• Chopper Stabilized Design Provides:

 Superior Temperature Stability

 Minimal Switch Point Drift

 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 X2-DFN2015-6 Packages

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

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

Pin Assignments

Applications

• Open and Close Detect for flip/slide Cellular Phones

• Smart Cover or Dock Detect for Cellular Phones and Tablet PCs

• Cover or Display Switch in Portable PCs (eg Ultrabook)

• Digital Still, Video Cameras and Handheld Gaming Consoles

• Door, Lids and Tray Position Switches

• Level, Proximity and Position Switches

• Contact-Less Switches in Home Appliances and Industrial

Applications

Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

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

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

the supply pin as possible.

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Résumé du contenu

Page 1 - OMNIPLOAR HALL-EFFECT SWITCH

AH1902 Document number: DS36533 Rev. 2 - 2 1 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902HIGH SENSITIVITY MICROPOWER

AH1902 Document number: DS36533 Rev. 2 - 2 10 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 IMPORTANT NOTICE DIODES

Page 3

AH1902 Document number: DS36533 Rev. 2 - 2 2 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Pin Descriptions Package:

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AH1902 Document number: DS36533 Rev. 2 - 2 3 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Absolute Maximum Ratings (N

Page 5 - Switch Points vs Temperature

AH1902 Document number: DS36533 Rev. 2 - 2 4 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Magnetic Characteristics (

Page 6

AH1902 Document number: DS36533 Rev. 2 - 2 5 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Typical Operating Character

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AH1902 Document number: DS36533 Rev. 2 - 2 6 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Ordering Information Pa

Page 8 - Hall Sensor

AH1902 Document number: DS36533 Rev. 2 - 2 7 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Package Outline Dimension

Page 9

AH1902 Document number: DS36533 Rev. 2 - 2 8 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Package Outline Dimensions

Page 10 - NEW PRODUCT

AH1902 Document number: DS36533 Rev. 2 - 2 9 of 10 www.diodes.com January 2014© Diodes Incorporated NEW PRODUCT AH1902 Suggested Pad Layout Pleas

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