http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



Diodes Semiconductor Electronic Components Datasheet


AH1898

PROGRAMMABLE MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH


No Preview Available !

AH1898 pdf
AH1898
PROGRAMMABLE MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Description
The AH1898 is a micropower magnetic range selectable (Bop/Brp)
Omnipolar Hall effect switch IC with internal pull up and pull down
capability, designed for portable and battery powered consumer
equipment such as cellular phones and portable PCs. To support
battery powered equipment and low voltage microcontrollers, the
AH1898 can operate over the supply range of 1.6V to 3.6V and uses
a hibernating clocking system to minimize the power consumption.
The average supply current is only 4.3µA typical at 1.80V. The
AH1898 has an 8kV ESD rating on the supply and output pins. To
minimize PCB space the AH1898 is packaged in the small
CSP package (0.81mm x 0.81mm typical).
The output is activated with either a north or south pole of sufficient
magnetic field strength. The user can select one of two magnetic
sensitivity bands via the BSEL pin without the addition of any external
components allowing a flexible but small solution. The band select
can be hardwired or be changed on the fly via a logic source such as
a micro-controller. 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). The output will remain off when there is no magnetic field.
Pin Assignments
(Top View)
(Bottom View)
U-WLB0808-4
Features
Omnipolar Operation (North or South pole)
Programmable Operate and Release Points
Supply Voltage of 1.6V to 3.6V
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
8kV Human Body Model ESD Capability
Miniature U-WLB0808-4 (CSP 0.81mm x 0.81mm typical)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
http://www.D
Open and Close Detect for Cellular Phones
Holster or Cover Detect for Cellular Phones and Tablet PCs
Cover or Display Switch in Portable PCs
Digital Still, Video Cameras and Handheld Gaming Consoles
Proximity and Position Switches
a
t
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 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.
AH1898
Document number: DS36028 Rev. 1 - 2
1 of 11
www.diodes.com
February 2013
© Diodes Incorporated
d
a



No Preview Available !

AH1898 pdf
Typical Applications Circuit
AH1898
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical.
Pin Descriptions
Package: U-WLB0808-4
Pin Number
A1
Pin Name
BSEL
A2 GND
B1 VDD
B2 OUTPUT
Function
Band Select Pin to select operating and release gauss points
Ground Pin
Power Supply Input
Output Pin
Functional Block Diagram
http://www.DataSheet4U.net/
AH1898
Document number: DS36028 Rev. 1 - 2
2 of 11
www.diodes.com
February 2013
© Diodes Incorporated
datasheet pdf - http://www.DataSheet4U.net/



Part Number AH1898
Description PROGRAMMABLE MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Maker Diodes - Diodes
Total Page 11 Pages
PDF Download
AH1898 pdf
Download PDF File
AH1898 pdf
View for Mobile




Featured Datasheets

Part Number Description Manufacturers PDF
AH180 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH AH180
Diodes Incorporated
PDF
AH1801 ULTRA-SENSITIVE HALL EFFECT SWITCH AH1801
Diodes
PDF
AH1802 ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH AH1802
Diodes
PDF
AH1803 ULTRA-SENSITIVE HALL EFFECT SWITCH AH1803
Diodes
PDF
AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH AH1804
Diodes
PDF
AH1806 HIGH SENSIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH AH1806
Diodes
PDF


Part Number Start With

0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

site map

webmaste! click here

contact us

Buy Components