AH1883

MICROPOWER, ULTRA-SENSITIVE HALL EFFECT

SWITCH

AH1883

Document number: DS31296 Rev. 5 - 2

1 of 7

www.diodes.com

September 2010

© Diodes Incorporated

Description

AH1883 is with two Hall effect plates and a 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

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.

Pin Assignments

5

4

3

2

1

SOT553

GND

Output

NC

NC

Vdd

( Top View )

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

Applications

•

Cellular phone

•

PDA

•

Cordless phone

Typical Application Circuit

AH1883

Vdd

Output

GND