Datasheet > AH1903-FA-7

AH1903-FA-7

更新时间： 2024-01-30 21:31:39

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-FA-7 数据手册

AH1903

HIGH SENSITIVITY MICROPOWER

UNIPOLAR/OMNIPOLAR SELECTABLE HALL-EFFECT SWITCH

Description

Pin Assignments

The AH1903 is a high sensitivity micropower Omnipolar or Unipolar

selectable Hall effect switch IC with internal pull up and pull down

capability. Designed for battery powered consumer equipment such

as cellular phones and portable PCs to office equipment, home

appliances and industrial applications, the average supply current is

only 4.3µA at 1.8V. To support portable equipment the AH1903 can

operate over the supply range of 1.6V to 3.6V and uses a hibernating

clocking system to minimize the power consumption. To minimize

PCB space the AH1903 is available in

X1-DFN1216-4 package.

a small low profile

The user can change the Hall switch function between Unipolar and

Omnipolar operation via the Select (SEL) pin. If the SEL pin is open

circuit or pulled high the AH1903 operates in Unipolar switch mode

detecting magnetic field direction with a South pole to the part mark

side of the package. If the SEL pin is pulled low the AH1903 functions

as a Omnipolar switch detecting either a North or South pole. The

output is activated with a pole of sufficient magnetic field strength.

When the magnetic flux density (B) perpendicular to the package is

larger than operate point (Bop), the output will be turned on (pulled

low) and held until B is lower than release point (Brp).

Applications

•

Open and Close Detect for flip/slide Cellular Phones

Smart Cover or Dock Detect for Cellular Phones and Tablet PCs

Cover or Display Switch in Portable PCs (eg Ultrabook)

Digital Still, Video Cameras and Handheld Gaming Consoles

Door, Lids and Tray Position Switches

Level, Proximity and Position Switches

Contact-Less Switches in Home Appliances and Industrial

Applications

Features

•

Unipolar or Omnipolar Operation

Operation can be changed by a logic source or fixed via

PCB design with no additional components

Typical Application Circuit

•

Supply Voltage of 1.6V to 3.6V

High Sensitivity

Micropower Operation

Chopper Stabilized Design Provides

Superior Temperature Stability

Minimal Switch Point Drift

Enhanced Immunity to Physical Stress

•

No External Pull-up Resistors Required

Good RF Noise Immunity

-40°C to +85°C Operating Temperature

High ESD capability of 8kV (Human Body Model) on V_DD, GND

and OUTPUT Pins

•

Small Low Profile X1-DFN1216-4 Package

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

4. C_INis for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical and should be placed as close to the

supply pin as possible.

1 of 11

www.diodes.com

June 2014

AH1903

Document number: DS36568 Rev. 3 - 2

12 3 4 5 6 7...11

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