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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Description
The AH1802 is a ultra-sensitivity, micropower Omnipolar 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 a chopper stabilized architecture the AH1802 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 2.5V to 5.5V and consumes only 24uW with a supply of 3V. The single open drain output can switched on 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 (pulled low). 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.
Pin Assignments
(Top View) 2. Output GND 3. 1. Vdd SC59
(Top View)
6. NC 5. GND 4. NC
1. Vdd
2. NC
3. Output
DFN2020-6
(Top View)
3. GND
(Top View)
3. GND
1. Vdd
3. Output
DFN2020-3
1. Vdd
2. Output
DFN2015H4-3
Features
* * * * * * Omni-polar (north or south pole) operation High sensitivity Single open drain output Micropower operation 2.5V to 5.5V operating range Chopper stabilized design provides * Superior temperature stability * Minimal switch point drift * Enhanced immunity to stress Good RF noise immunity -40C to 85C operating temperature ESD5kV for DFN2020-6, DFN2020-3 and DFN2015H4-3 ESD6kV for SC59 * * Low profile SC59, DFN2020-6, DFN2020-3 and DFN2015H4-3 packages "Green" Molding Compound (Note 1)
Applications
* * * * Cover switch in clam-shell or slide type cellular phones Display switch for portable PCs On/Off switch for PDAs and digital cameras Contact-less switch in consumer products
* * *
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html.
AH1802
Document number: 31170 Rev. 8 - 2
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Typical Application Circuit
2.5~5.5V
RL C AH1802 GND Output
Pin Descriptions
Pin Name Vdd GND Output NC
Notes:
P/I/O P/I P/I O
Description Power Supply Input Ground Output Pin No connection (Note 2)
2. NC is "No Connection"- recommendation is to connect the NC pin to ground externally.
Functional Block Diagram
1
Power switch Offset Cancelling Hall Plate
Vdd
Output Amp Latch
3
Logical GND
2
Offset Cancelling Hall Plate Amp Latch
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Absolute Maximum Ratings (TA = 25C)
Symbol Vdd B Ts PD TJ Characteristics Supply Voltage Magnetic Flux Density Storage Temperature Range Package Power Dissipation Maximum Junction Temperature Values 7 Unlimited -65 to +150 230 150 Unit V C mW C
Recommended Operating Conditions (TA = 25C)
Symbol Vdd TA Parameter Supply Voltage Operating Temperature Range Conditions Operating Operating Rating 2.5 to 5.5 -40 to +85 Unit V C
Electrical Characteristics (TA = 25C, Vdd = 3V; unless otherwise specified)
Symbol Vout Ioff Idd(en) Characteristic Output On Voltage Output Leakage Current Conditions Iout=1mA Vout=5.5V, B < Brp Chip enable, TA= 25C, Vdd = 3V Chip enable, TA= -40~85C, Vdd = 2.5~5.5V Chip disable, TA= 25C, Vdd = 3V Chip disable, TA= -40~85C, Vdd = 2.5~5.5V Average supply current , TA= 25C, Vdd = 3V Average supply current , TA= -40~85C, Vdd = 2.5~5.5V For design information only (Note 3) (Note 3) Min Typ. 0.1 <0.1 3 3 5 5 8 8 300 75 75 0.1 Max 0.3 1 6 10 10 18 16 23 150 150 Unit V A mA mA A A A A KHz s ms %
Idd(dis)
Supply Current
Idd(avg) FC Tawake Tperiod D.C.
Notes:
Chopping Frequency Awake Time Period Duty Cycle
3. When power is initially turned on, Vdd must be within its correct operating range (2.5V to 5.5V) to guaranteed the output sampling. The output state is valid after the second operating cycle (typical 150ms).
Tperiod Tawake Idd(en)
Idd (dis) 0
Sample and output latched
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Magnetic Characteristics (TA = 25C, Vdd = 3V, Note 4 & 5)
(1mT=10 Gauss)
Symbol Bops(south pole to brand side) Bopn(north pole to brand side) Brps(south pole to brand side) Brpn(north pole to brand side) Bhy( Bopx - Brpx )
Notes:
Characteristic Operate Point Release Point Hysteresis
Min 20 -40 10 5
Typ. 28 -28 20 -20 8
Max 40 -20 -10 -
Unit
Gauss
4. Typical data is at TA = 25C, Vdd = 3V, and for design information only. 5. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Output ( Output Voltage ) ( Output Voltage )
Output
Vcc ( off-state ) Bhy
Turn off
( off-state )
Vcc
Turn on
Turn off
Bhy
Turn on
( on-state )
Vsat Bopn Brpn 0 ( Magnetic flux density B )
Vsat
( on-state )
0 Brps Bops ( Magnetic flux density B )
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Performance Characteristics
TA (C) PD (mW) 25 230
P D (m W )
300
50 184
60 166
70 147
80 129
85 120
90 110
100 92
110 74
120 55
130 37
140 18
150 0
P o w e r D is s i p a tio n C u rv e
200
100
0 -4 0 0 25 50 75 85 100 12 5 150
o
TA ( C)
Ordering Information
AH 1802 - XXX G - 7 - 01
Package W : SC59 SN : DFN2020-6 FJ : DFN2020-3 FY4 : DFN2015H4-3
Green
Packing 7 : Tape & Reel
Taping orientation 01: 180o rotation Note 8
G : Green
Device AH1802-WG-7 AH1802-SNG-7 AH1802-FJG-7 AH1802-FJG-7-01 (Note 8) AH1802-FY4G-7
Notes:
Package Code W SN FJ FJ FY4
Packaging (Note 6 & 7) SC59 DFN2020-6 DFN2020-3 DFN2020-3 DFN2015H4-3
7" Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7 3000/Tape & Reel -7
6. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 7. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 8. AH1802-FJG-7-01 DFN2020-3 package taping orientation is rotated by 180o compared to standard part AH1802-FJG-7. See package orientation diagrams on page 10.
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Marking Information
(1) SC59
( Top View )
3 XX Y W X 1 2
Part Number AH1802 (2) DFN2020-6
XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green
Package SC59 Identification Code KC
( Top View ) XX YWX Pin 1 indicator XX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green
Package DFN2020-6 Identification Code KC
Part Number AH1802 (3) DFN2020-3
( Top View ) XX YWX Pin 1 indicator XX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green
Package DFN2020-3 Identification Code KE
Part Number AH1802
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Marking Information (Continued)
(4) DFN2015H4-3
( Top View )
XX YWX Pin 1 indicator XX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : A~Z : Green
Package DFN2015H4-3 Identification Code KF
Part Number AH1802
Package Outline Dimensions (All Dimensions in mm)
(1) Package Type: SC59
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Package Outline Dimensions (Continued)
(2) Package Type: DFN2020-6
0.57/0.63
Marking
0.15max.
0.05 C 0.08 C
0.43mon.
(Active area depth) Seating plane
C
0/0.05
0.15 C
2x
C L
Sensor location
0.30/0.40 0.45
Pin#1 ID
1.95/2.075
0.76/0.96
C L
C L
0.65nom.
0.2/0.3
C L
0.37
0.05 M C A B
Bottom View
1.67
Land Pattern Recommendation (Unit:mm)
(3) Package type: DFN2020-3
0.47/0.53
0/0.05
Top Marking Seating plane
C L
1.25 0.3
C L
0.325
0.10 C 0.08 C
B
2.4
0.5Typ
R0
Pin1
Sensor location
0.35/0.45
0.925
C
C L
0.65
.2
1.85/2.15
0.775/0.975
C L
Pin1
0.5 1
0.138
2x-
0.25 B 0.10 M C A B
0.2/0.3 0.325
A
Land Pattern Recommendation (Unit:mm) 0.180.07 Top View
1.1/1.35 1.85/2.15
0.25 A
Bottom View
2x
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0.138
0.3
0.15
2x-
0.15 C
0.9
0.15
B
1.95/2.075 1.45/1.65
A
Top View
0.37 0.65
1 R0.
December 2010
(c) Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Package Outline Dimensions (Continued)
(4) Package type: DFN2015H4-3
Top Mark
0.10 C 3x0.08 C
0.40Max.
0.13Typ.
1.30Typ. 3x-0.35 Seating Plane
0/0.05 2x0.25 A
Side View
C
C L
1.45/1.575 0.125Typ. B 0.25/0.35 2x-0.50
C L
0.15
1.95/2.075
0.7/0.9
Hall Sensor
C L
(Pin #1)
0.50
0.50
1.0/1.2
Land Pattern Recommendation (Unit:mm)
Top View
2x0.25 B
0.20/0.30
C L
0.10
CAB
Bottom View
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0.45
(Pin #1)
R0
.1 7
5
1.0Typ.
A
December 2010
(c) Diodes Incorporated
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Taping Orientation
(1) DFN2020-6 and DFN2020-3 with standard taping orientation
(2) DFN2020-3 with 180o rotation from standard taping orientation
(3) DFN2015H4-3
Notes:
9. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.
AH1802
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AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH
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 (c) 2010, Diodes Incorporated www.diodes.com
AH1802
Document number: 31170 Rev. 8 - 2
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