Diodes AH1895 Manuel d'utilisateur télécharger pdf

AH1895

Document number: DS35742 Rev. 1 - 2

1 of 10

www.diodes.com

July 2013

NEW PRODUCT

H1895

MEDIUM SENSITIVITY MICROPOWER

OMNIPLOAR HALL-EFFECT SWITCH

Description

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.

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.

Features

 Omnipolar Operation (North or South pole)

 Supply Voltage of 1.6V to 3.6V

 Medium 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 SOT553 Packages

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

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

Pin Assignments

(Top View)

X1-DFN1216-4

(Top View)

SOT553

Applications

 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

 Level, Proximity and Position Switches

 Contact-Less Switches in Home Appliances and Industrial

Applications

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

is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical.

1 2 3 4 5 6 7 8 9 10

Résumé du contenu

Page 1 - OMNIPLOAR HALL-EFFECT SWITCH

AH1895 Document number: DS35742 Rev. 1 - 2 1 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895MEDIUM SENSITIVITY MICROPOWER O

AH1895 Document number: DS35742 Rev. 1 - 2 10 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 IMPORTANT NOTICE DIODES INC

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AH1895 Document number: DS35742 Rev. 1 - 2 2 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Pin Descriptions Package: X1

Page 4 - ( Output Voltage )

AH1895 Document number: DS35742 Rev. 1 - 2 3 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Absolute Maximum Ratings (Not

Page 5 - Switch Points vs Temperature

AH1895 Document number: DS35742 Rev. 1 - 2 4 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Magnetic Characteristics (Not

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AH1895 Document number: DS35742 Rev. 1 - 2 5 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Typical Operating Characteris

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AH1895 Document number: DS35742 Rev. 1 - 2 6 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Ordering Information Part

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AH1895 Document number: DS35742 Rev. 1 - 2 7 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Package Outline Dimensions (A

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Page 10 - NEW PRODUCT

AH1895 Document number: DS35742 Rev. 1 - 2 9 of 10 www.diodes.com July 2013© Diodes Incorporated NEW PRODUCT AH1895 Suggested Pad Layout Please s

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