Datasheet > SS239KSOT

SS239KSOT

更新时间： 2024-11-13 12:23:19

品牌	Logo	应用领域
SECELECTRONICS		开关
页数	文件大小	规格书
8页	239K
描述
CMOS Omnipolar High Sensitivity Micropower Hall Switch

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SS239KSOT 数据手册

SS239

CMOS Omnipolar High Sensitivity Micropower Hall Switch

Packages

Features and Benefits

–

Operation down to 2.5V

Micropower consumption for battery

powered applications

–

High sensitivity for direct reed switch

replacement applications

Omnipolar, output switches with absolute

value of North or South pole from magnet

3 pin SOT23 (suffix SO)

3 pin SIP (suffix UA)

Functional Block Diagram

Application Examples

–

Solid-state switch

Handheld Wireless Handset Awake Switch

Lid close sensor for battery powered devices

Magnet proximity sensor for reed switch

replacement in low duty cycle applications

Chopper stabilized amplifier

stage2．Description

The SS239 Omnipolar Hall effect sensor IC is fabricated

from mixed signal CMOS technology. It incorporates

advanced chopper-stabilization techniques to provide

accurate and stable magnetic switch points.

The circuit design provides an internally controlled clocking mechanism to cycle power to the Hall element and

analog signal processing circuits. This serves to place the high current-consuming portions of the circuit into a

“Sleep” mode. Periodically the device is “Awakened” by this internal logic and the magnetic flux from the Hall

element is evaluated against the predefined thresholds. If the flux density is above or below the B_OP/B_RPthresholds

then the output transistor is driven to change states accordingly. While in the “Sleep” cycle the output transistor is

latched in its previous state. The design has been optimized for service in applications requiring extended operating

lifetime in battery powered systems.

The output transistor of the SS239 will be latched on (B_OP) in the presence of a sufficiently strong South or North

magnetic field facing the marked side of the package. The output will be latched off (B_RP) in the absence of a

magnetic field.

V2.10 May 1, 2012

12 3 4 5 6 7 8

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与SS239KSOT相关器件

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SS239LUA	SECELECTRONICS	获取价格	CMOS Omnipolar High Sensitivity Micropower Hall Switch
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