Datasheet > AH1903-FA-7

AH1903-FA-7

更新时间： 2024-02-02 09:01:49

品牌	Logo	应用领域
美台 - DIODES		输出元件传感器换能器
页数	文件大小	规格书
11页	557K
描述
Hall Effect Sensor, 0.9mT Min, 4.8mT Max, 0.2-1.6V, Rectangular, Surface Mount, 1.20 X 1.60 MM, GREEN, DFN-4

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AH1903-FA-7 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	Factory Lead Time：	19 weeks
风险等级：	1.74	Is Samacsys：	N
主体宽度：	1.2 mm	主体高度：	0.5 mm
主体长度或直径：	1.6 mm	滞后：	1 mT
JESD-609代码：	e3	最大磁场范围：	4.8 mT
最小磁场范围：	0.9 mT	安装特点：	SURFACE MOUNT
最大工作电流：	0.013 mA	最高工作温度：	85 °C
最低工作温度：	-40 °C	输出范围：	0.2-1.6V
输出类型：	VOLTAGE OUTPUT	封装形状/形式：	RECTANGULAR
传感器/换能器类型：	MAGNETIC FIELD SENSOR,HALL EFFECT	最大供电电压：	3.6 V
最小供电电压：	1.6 V	表面贴装：	YES
端子面层：	Matte Tin (Sn)	端接类型：	SOLDER
Base Number Matches：	1

AH1903

Application Notes

The AH1903 includes a Hall switch function select pin (SEL) so that the AH1903 can be changed between an Unipolar or an Omnipolar Hall

Switch operation to fit a multitude of applications. The diagrams below show the different switching functions between the Unipolar and the

Omnipolar Hall switch types.

AH1903 in Unipolar Operation

In Unipolar mode, the sensor detects the magnetic flux density perpendicular to the part marking surface with magnetic field direction only from

the back to the front of the package as shown below. This magnetic field direction is similar to having a South pole on the part marking side or a

North pole to the back of the package.

Magnetic Field Direction for Unipolar Mode Operation

AH1903 in Omnipolar Operation

In Omnipolar mode, the sensor detects the magnetic flux density perpendicular to the part marking surface with magnetic field directions from the

front to the back as well as from the back to the front of the package as shown below. The sensor detects both North or South pole to the part

marking side or to the back of the package.

Magnetic Field Directions for Omnipolar Mode Operation

The AH1903 includes a function select pin (SEL) to change the device type between Unipolar and Omnipolar operations. The SEL pin can be

hard wired within the application circuit or can be changed on the fly by using the SEL pin as a logic input. This feature allows the AH1903

operating mode to be changed by firmware within the application without the addition of any external components. If the SEL pin is left open

circuit the AH1903 defaults to Unipolar mode.

5 of 11

www.diodes.com

June 2014

AH1903

Document number: DS36568 Rev. 3 - 2

1 2 3 456 7 8...11

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