3209 - MICROPOWER/ ULTRA-SENSITIVE HALL-EFFECT SWITCHES

Datasheet Summary

Description

Low Average Power.

Internal timing circuitry activates the sensor for 60 µs and deactivates it for the remainder of the period (480 µs for the A3209Ex and 60 ms for the A3210Ex).

Features

I I I I Micropower Operation Operate With North or South Pole 2.5 V to 3.5 V Battery Operation Chopper Stabilized Superior Temperature Stability Extremely Low Switch-Point Drift Insensitive to Physical Stress ESD Protected to 5 kV Solid-State Reliability Small Size Easily Manufacturable With Magnet Pole Independence I I I I Always order by complete part number: the prefix ‘A’ + the basic four-digit part number + the suffix ‘E’ to indicate operating temperature range + a suffix to indicate pack.

Allegro MicroSystems

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Datasheet Details

Part number	3209
Manufacturer	Allegro MicroSystems
File Size	224.50 KB
Description	MICROPOWER/ ULTRA-SENSITIVE HALL-EFFECT SWITCHES
Datasheet	3209 Datasheet
Additional preview pages of the 3209 datasheet.

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Full PDF Text Transcription

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3209 AND 3210 Package Suffix ‘LH’ Pinning 3 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES The A3209Ex and A3210Ex integrated circuits are ultra-sensitive, pole independent Hall-effect switches with a latched digital output. They are especially suited for operation in battery-operated, hand-held equipment such as cellular and cordless telephones, pagers, and palmtop computers. 2.5 volt to 3.5 volt operation and a unique clocking scheme to reduce the average operating power requirements – the A3209Ex to 400 µW, the A3210Ex to 25 µW! Except for operating duty cycle and average operating current, the A3209Ex and A3210Ex are identical.

Published: Mar 30, 2005 |