Diodes AH1889 Uživatelský manuál stáhnout pdf

AH1889

Document number: DS36256 Rev. 1 - 2

1 of 7

www.diodes.com

April 2013

NEW PRODUCT

H1889

HIGH SENSIVITY DUAL UNIPOLAR HALL-EFFECT SWITCH

Description

AH1889 is a high sensitivity dual output Unipolar Hall effect IC which

can detect either a North or South pole independently and switch one

of its two outputs with internal pull up and pull down capability. The

AH1889 is mainly designed for low voltage applications which require

a quick response time and can operate over the supply voltage of

1.65V to 3.6V. To minimize PCB space AH1889 outputs have internal

pull up and pull down capability and is packaged in a small low profile

SOT553 package.

A South pole of sufficient strength will turn OUTPUT1 on and a North

pole of sufficient strength with turn on OUTPUT2. While the magnetic

flux density (B) perpendicular to the package is larger than operate

point Bops or Bopn, the appropriate output will be turned on (pulled

low), the output is held until B is lower than release point Brps or

Brps, then turned off (high). The outputs will be turned off and will

remain off when there is no magnetic field.

Features

 Two Monolithic Unipolar Hall Effect Sensor Switch

 Operation with a South Pole (OUTPUT1)

 Operation with a North Pole (OUTPUT2)

 Supply Voltage of 1.65V to 3.6V

 Quick Response Time Without Sleep Mode

 Chopper Stabilized Design Provides:

 Superior Temperature Stability

 Extremely low Switch-Point Drift

 Enhanced immunity to physical stress

 Good RF Noise Immunity

 -40°C to +85°C Operating Temperature

 ESD (Human Body Model) >4kV

 Small and Low Profile SOT553 package

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

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

Pin Assignments

(Top View)

SOT553

Applications

 Position and proximity detection for consumer, office equipments

and industrial applications

 Open and close detect switches for home appliances

 Door, lids, tray position detect switches

 Magnetic field direction detection

 Contact-less switches for consumer 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 100nF typical.

1 2 3 4 5 6 7

Shrnutí obsahu

Strany 1 - (Top View)

AH1889 Document number: DS36256 Rev. 1 - 2 1 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889HIGH SENSIVITY DUAL UNIPOLAR H

Strany 2

AH1889 Document number: DS36256 Rev. 1 - 2 2 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889 Pin Descriptions Package: S

Strany 3

AH1889 Document number: DS36256 Rev. 1 - 2 3 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889 Recommended Operating Condi

Strany 4 - Switch Points vs Temperature

AH1889 Document number: DS36256 Rev. 1 - 2 4 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889 Typical Operating Character

Strany 5 - Power Dissipation Curve

AH1889 Document number: DS36256 Rev. 1 - 2 5 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889 Thermal Performance Charact

Strany 6

AH1889 Document number: DS36256 Rev. 1 - 2 6 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889 Package Outline Dimensions

Strany 7 - NEW PRODUCT

AH1889 Document number: DS36256 Rev. 1 - 2 7 of 7 www.diodes.com April 2013© Diodes Incorporated NEW PRODUCT AH1889 IMPORTANT NOTICE DIODES

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