AH1893-FA-7 Datasheet AH1893-FA-7 | P1-P3

AH1893

Document number: DS35740 Rev. 1 - 2

1 of 10

www.diodes.com

July 2013

NEW PRODUCT

H1893

HIGH SENSITIVITY MICROPOWER

OMNIPOLAR HALL-EFFECT SWITCH

Description

The AH1893 is a high 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 4.3µA at 1.85V. To support potable

equipment the AH1893 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 AH1893 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).

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 SOT553 and X1-DFN1216-4 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 Switch 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.

AH1893

Document number: DS35740 Rev. 1 - 2

2 of 10

www.diodes.com

July 2013

NEW PRODUCT

H1893

Pin Descriptions

Package: X1-DFN1216-4

Pin Number Pin Name Function

1 OUTPUT Output Pin

Power Supply Input

3 NC No Connection (Note 5)

4 GND Ground Pin

Package: SOT553

Pin Number Pin Name Function

Power Supply Input

2 NC No Connection (Note 5)

3 NC No Connection (Note 5)

4 GND Ground

5 OUTPUT Output

Note: 5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.

Functional Block Diagram

AH1893

Document number: DS35740 Rev. 1 - 2

3 of 10

www.diodes.com

July 2013

NEW PRODUCT

H1893

Absolute Maximum Ratings (Note 6) (@T

= +25°C, unless otherwise specified.)

Symbol Parameter Rating Unit

Supply Voltage (Note 7) 6 V

DD_REV

Reverse Supply Voltage -0.3 V

OUTPUT

Output current (source and sink) 3 mA

B Magnetic Flux Density Unlimited

Package Power Dissipation

X1-DFN1216-4 230 mW

SOT553 230 mW

Ts Storage Temperature Range -65 to +150 °C

Maximum Junction Temperature 150 °C

ESD HBM Human Body Model (HMB) ESD capability 8 kV

Notes: 6. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;

functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be

affected by exposure to absolute maximum rating conditions for extended periods of time.

7. The absolute maximum V

of 6V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to

operate the device at the absolute maximum rated conditions for any period of time.

Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

Symbol Parameter Conditions Rating Unit

Supply Voltage Operating 1.6V to 3.6V V

Operating Temperature Range Operating -40 to +85

C

Electrical Characteristics (@T

= +25°C, V

= 1.85V, unless otherwise specified.)

Symbol Parameter Conditions Min Typ Max Unit

Output Low Voltage (on) I

OUT

= 1mA - 0.1 0.2 V

Output High Voltage (off) I

OUT

= -1mA V

-0.2 V

-0.1 — V

Ioff Output Leakage Current V

OUT

= 3.6V, Output IOff — < 0.1 1 µA

(awake)

Supply Current

During ‘Awake’ Period,

= +25°C, V

= 3V

—

2.1 — mA

(sleep)

During ‘Sleep’ Period,

= +25°C, V

= 3V

—

2.5 — mA

(avg)

Average Supply Current

= +25°C, V

= 1.85V

—

4.3 8 µA

= +25°C, V

= 3.6V

—

7.2 13 µA

Tawake Awake Time (Note 8) — 50 100 µs

Tperiod Period (Note 8) — 50 100 ms

D.C. Duty Cycle — 0.1 — %

Note: 8. When power is initially turned on, the operating V

(1.6V to 3.6V) must be applied to guaranteed the output sampling.

The output state is valid after the second operating cycle (typical 100ms).

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AH1893-FA-7

Mfr. #:

Buy AH1893-FA-7

Manufacturer:

Description:

Magnetic Sensors Board Mount Hall Effect / Magnetic Sensors Hall Effect Switch 1.6V to 3.6V 4.3uA

Lifecycle:

New from this manufacturer.

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AH1893-FA-7