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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
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Features
* * * * Micropower operation Operation with North or South Pole 2.4 to 5.5V battery operation Chopper Stabilized * Superior temperature stability * Extremely Low Switch-Point Drift * Insensitive to Physical Stress Good RF noise immunity -40C to 85C operating temperature Low profile 3 pin SC59 (commonly known as SOT23 in Asia) and DFN2020-6 package ESD (HBM) 4KV for DFN2020-6 SC59 (commonly known as SOT23 in Asia) and DFN2020-6: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1)
General Description
AH1803 is with two Hall effect plates and a CMOS output driver, mainly designed for battery-operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total operation power is down to 24uW in the 3V supply. Either North or South Pole of sufficient strength will turn the output on. The output will be turned off under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output will be turned on (low), the output is held until B is lower than release point (Brp), then turned off (High).
* * * * * *
Applications
* * * Cellular phone PDA Cordless phone
Typical Circuit
2.4~5.5V
C* AH1803 GND
Output
to strengthen * C is for power stabilization and10nF~100nF. the noise immunity, the recommended capacitance is
AH1803 Rev. 9 DS31193
1 of 9 www.diodes.com
OCTOBER 2009
(c) Diodes Incorporated
AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Ordering Information
AH1803 - XX G - 7
Package W : SC59 SN : DFN2020-6
Product AH1803-WG-7 AH1803-SNG-7
Notes:
Green G : Green
Packing 7 : Tape & Reel
Package Code W SN
Packaging (Note 2) SC59 DFN2020-6
7" Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7
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. 2. 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.
Pin Assignments
(1) SC59 (commonly known as SOT23 in Asia) (2) DFN2020-6 ( Top View )
( Top View ) 2. Output GND 3. 1. Vdd
6. NC
5. GND
4. NC
1. Vdd
Notes: 3. NC is "No Connection", which is recommended to be tied to ground.
2. NC
3. Output
Pin Descriptions
Pin Name Vdd GND Output NC P/I/O P/I P/I O Description Power Supply Input Ground Output Pin No Connected
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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Block Diagram
Vdd Power switch Offset Cancelling Hall Plate
Amp
Latch
Logical Offset Cancelling Hall Plate
Output
Amp
Latch GND
Absolute Maximum Ratings
Symbol Vdd B Ts PD TJ
(at TA= 25C)
Characteristics Supply voltage Magnetic flux density Storage Temperature Range Package Power Dissipation Maximum Junction Temperature SC59 DFN2020-6
Values 7 Unlimited -65 to +150 230 230 150
Unit V C mW mW C
Recommended Operating Conditions
Symbol Vdd TA Parameter Supply Voltage Operating Temperature Range
( TA = 25C )
Conditions Operating Operating
Rating 2.4~5.5 -40 to +85
Unit V C
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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Electrical Characteristics
Symbol VOH VOL Idd(en) Characteristic
(TA= +25C, Vdd= 3V; unless otherwise specified)
Conditions
Min
Typ. 3 3 5 5 8 8 75 75 0.1
Max 0.1 6 9 10 18 16 27 150 150 -
Unit V V mA mA A A A A s ms %
Idd(dis)
Idd(avg) Tawake Tperiod D.C.
Notes:
Output On Voltage (High side) IOUT = -1mA Vdd-0.2 Output On Voltage (Low side) IOUT = 1mA Chip enable, TA = 25C, Vdd = 3V Chip enable, TA = -40~85C, Vdd = 2.4~5.5V Chip disable, TA = 25C, Vdd = 3V Supply Current Chip disable, TA = -40~85C, Vdd = 2.4~5.5V Average supply current, TA = 25C , Vdd = 3V Average supply current, TA = -40~85C, Vdd = 2.4~5.5V Awake Time (Note 5) Period (Note 5) Duty Cycle -
5. When power is initially on, the operating Vdd (2.4V to 5.5V) must be applied to be guaranteed for the output sampling. The output state is valid after the second operating phase (typical 150ms).
Tperiod Tawake Idd(en)
Idd (dis) 0
Sample and output latched
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(c) Diodes Incorporated
AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Magnetic Characteristics
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:
(TA = 25C, Vdd = 3V, Note 6, 7)
(1mT = 10G) Max Unit 4 -2 -1 -
Parameter Operation Point Release Point Hysteresis
Min 2 -4 1 0.5
Typ. 3 -3 2 -2 1
mT
6. Typical data is at TA=25 C, Vdd=3V, and for design information only. 7. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
Output ( Output Voltage ) ( Output Voltage )
Output
Vcc ( off-state )
Turn off Turn on
( off-state )
Vcc
Bhy
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 )
Performance Characteristics
(1)
SC59 (commonly known as SOT23 in Asia) and DFN2020-6 25 50 60 70 80 85 90 100 TA (C) 230
P D (m W )
300
110 74
120 55
130 37
140 18
150 0
PD (mW)
184
166
147
129
120
110
92
P o w e r D is s i p a tio n C u rv e
200
100
0 0 -4 0 25 50 75 85 100 12 5 150
o
TA ( C)
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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Marking Information
(1) SC59 (commonly known as SOT23 in Asia)
( Top View )
XX Y W X
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
Part Number AH1803
Package SC59
Identification Code KD
(2) DFN2020-6
( 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 KD
Part Number AH1803
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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Package Information
(All Dimensions in mm)
(1) Package Type: SC59 (commonly known as SOT23 in Asia)
0.35/0.50
TOP VIEW
1.50/ 1.70
2.70/ 3.00
1.90 2.90/3.10 1.00/ 1.30 0.10/0.20
0.013/0.10 0.95 0.35/0.55
0 O /8 O
(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
2x
Pin#1 ID B
0/0.05
0.15 C
1.95/2.075 1.45/1.65
A
Sensor location
1.95/2.075
0.97/1.04
C L
2x-
0.15 C
0.30/0.40
0.65nom. 0.97/1.04
C L
0.76/0.96 0.2/0.3
0.05 M C A B
Bottom View
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(c) Diodes Incorporated
AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH
Taping Orientation
For DFN2020-6
Notes:
8. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.
AH1803 Rev. 9 DS31193
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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT 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) 2009, Diodes Incorporated www.diodes.com
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