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PDF AH1888 Data sheet ( Hoja de datos )

Número de pieza AH1888
Descripción GENERAL-SENSITIVE HALL EFFECT
Fabricantes Diodes Incorporated 
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AH1888
MICROPOWER, GENERAL-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Description
Pin Assignments
The AH1888 micro power Omni-polar Hall Effect switch IC
designed for portable and battery powered equipment such as
cellular phones, PDA’ s and portable PC’ s. Based on two
sensitive Hall Effect plates and chopper stabilized architecture
the AH1888 provides a reliable solution over the whole
operating range. To support portable and battery powered
equipment the design has been optimized to operate over the
supply range of 1.65V to 3.3V and consumes only 12.6uW
with a supply of 1.8V.
The outputs are switched with either a north or south pole of
sufficient strength. When the magnetic flux density (B) is
larger than operate point (Bop) the output is switched on. The
output is turned off when B becomes lower than the release
point (Brp). The output will remain off when there is no
magnetic field. The AH1888-ZG has two outputs, output one
pulls low when switched on and output two is inverted. The
AH1888-FJG provides output one and AH1888-FJRG
provides output two.
( Top View )
Output 2 1
5 Output1
GND 2
NC 3
SOT553
4 Vdd
( Top View )
3. GND
( Top View )
3. GND
1. Vdd
2. Output 1
DFN2020-3
1. Vdd
2. Output 2
DFN2020R-3
Features
• Omni-polar (north or south pole) operation
• Single or dual output options
• Internal output pull up capability
• Micropower operation
• 1.65V to 3.3V operating range
• Chopper stabilized design provides
• Superior temperature stability
• Minimal switch point drift
• Enhanced immunity to stress
• Good RF noise immunity
• -40°C to 85°C operating temperature
• ESD (HBM)4KV for SOT553
• ESD (HBM)5KV for DFN2020-3 and DFN2020R-3
• Package: SOT553, DFN2020-3 and DFN2020R-3
• “Green” Molding Compound
Applications
• Cellular phone
• PDA
• Cordless phone
AH1888
Document number: DS31565 Rev. 6 - 2
1 of 11
www.diodes.com
August 2010
© Diodes Incorporated

1 page




AH1888 pdf
AH1888
MICROPOWER, GENERAL-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Magnetic Characteristics (TA = 25°C, Vdd = 1.8V~3.0V, Note 2 & 3)
Symbol
Characteristic Min Typ.
Bops(south pole to brand side)
Bopn(north pole to brand side)
Brps(south pole to brand side)
Brpn(north pole to brand side)
Operate Point
Release Point
-
-79
35
-
61
-61
53
-53
Bhy( Bopx Brpx )
Hysteresis 3 8
(1mT=10 Gauss)
Max Unit
79
-
- Gauss
-35
-
Notes: 2. Typical data is at Vdd = 3V.
3. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Output 1 ( Active Low )
Output 1 ( Active Low )
Vdd ( off-state )
Turn on
Bhy
Turn off
( off-state ) Vdd
Turn off
Bhy
Turn on
( on-state )
Vsat
N
Bopn Brpn 0
S
( Magnetic flux density B )
Vsat
( on-state )
N 0 Brps Bops
( Magnetic flux density B )
S
Output 2 ( Active High )
Output 2 ( Active High )
Vdd ( off-state )
Turn on
Bhy
Turn off
( on-state )
Vsat
N
Bopn Brpn 0
S
( Magnetic flux density B )
( off-state ) Vdd
Turn off
Bhy
Turn on
Vsat
( on-state )
N 0 Brps Bops
( Magnetic flux density B )
S
AH1888
Document number: DS31565 Rev. 6 - 2
5 of 11
www.diodes.com
August 2010
© Diodes Incorporated

5 Page





AH1888 arduino
AH1888
MICROPOWER, GENERAL-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2010, Diodes Incorporated
www.diodes.com
AH1888
Document number: DS31565 Rev. 6 - 2
11 of 11
www.diodes.com
August 2010
© Diodes Incorporated

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