AH1803(2009) データシートの表示（PDF） - Diodes Incorporated.

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AH1803
(Rev.:2009)

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Diodes Incorporated. 

Features

AH1803

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT

SWITCH

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General Description

• Micropower operation

• Operation with North or South Pole

• 2.4 to 5.5V battery operation

• Chopper Stabilized

• Superior temperature stability

• Extremely Low Switch-Point Drift

• Insensitive to Physical Stress

• Good RF noise immunity

• -40°C to 85°C operating temperature

• Low profile 3 pin SC59 (commonly known as SOT23 in

Asia) and DFN2020-6 package

• ESD (HBM) ＞ 4KV for DFN2020-6

• SC59 (commonly known as SOT23 in Asia) and

DFN2020-6: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

AH1803 is with two Hall effect plates and a CMOS output driver,

mainly designed for battery–operation, hand-held equipment

(such as Cellular and Cordless Phone, PDA). The total operation

power is down to 24uW in the 3V supply.

Either North or South Pole of sufficient strength will turn the

output on. The output will be turned off under no magnetic field.

While the magnetic flux density (B) is larger than operate point

(Bop), the output will be turned on (low), the output is held until

B is lower than release point (Brp), then turned off (High).

Applications

• Cellular phone

• PDA

• Cordless phone

Typical Circuit

2.4~5.5V

C*

AH1803

GND

Output

* C is for power stabilization and to strengthen the noise immunity, the

recommended capacitance is 10nF~100nF.

AH1803 Rev. 9

DS31193

1 of 9

www.diodes.com

OCTOBER 2009

© Diodes Incorporated

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