AH1885(2010) データシートの表示（PDF） - Diodes Incorporated.

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AH1885
(Rev.:2010)

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH

Diodes Incorporated. 

AH1885

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT

SWITCH

Description

Pin Assignments

AH1885 is with two Hall effect plates and dual CMOS

output driver, mainly designed for battery–powered, hand-

held equipment (such as Cellular and Cordless Phone,

PDA). The total operation power is down to 15uW in the

1.8V supply.

Either north or south pole of sufficient strength will turn the

output1 on. The output1 will be turned off under no

magnetic field.

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

point (Bop), the output1 will be turned on (low), the output1

is held until B is lower than release point (Brp), then turned

off.

( Top View )

Out 2 1

5 Out 1

GND 2

NC 3

4 Vdd

SOT553

Features

• Micropower operation

• Operation with North or South Pole

• 1.65V to 3.3V 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

• ESD ＞ 4KV in human body mode

• Package: SOT553

• “Green” Molding Compound

Typical Application Circuit

Vdd

Applications

• Cellular phone

• PDA

• Cordless phone

AH1885

Document number: DS31235 Rev. 4 - 2

AH1885

GND

Output 1

Output 2

(Complement

of Output 1)

1 of 7

www.diodes.com

September 2010

© Diodes Incorporated

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