AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH NEW PRODUCT Description Pin Assignments The AH1804 is a micropower Omnipolar Hall effect switch IC with a single output driver with internal pull up and pull down capability. Designed for portable and battery powered equipment such as cellular phones and portable PCs the average supply current is only 12µA at 3.3V. To support battery powered equipment the AH1804 can operate over the supply range of 2.5V to 3.6V and uses a hibernating clocking system to minimize the power consumption. ( Top View ) GND NC 4 The output is activated with either a north or south pole of sufficient strength. When the magnetic flux density (B) is larger than operate point (Bop), the output will be turned on (pulled low) and held until B is lower than release point (Brp). • • • • • 1 2 VDD Output DFN1216-4 Features • • • • • 3 Applications • • • Omnipolar operation (North or South pole) Low supply voltage 2.5V to 3.6V Micropower operation No external pull up resistors required Chopper stabilized design o Superior temperature stability o Extremely Low Switch-Point Drift o Insensitive to Physical Stress Good RF noise immunity -40°C to 85°C operating temperature Small low profile DFN1216-4 package ESD (HBM) ＞ 5KV “Green” Molding Compound • Cover switch in clam-shell and slide cellular phones Cover switch in portable PC’s, Tablets and PDA Display screen open/close detect in Digital camcorders Contact-less switch in portable battery powered consumer products Typical Application Circuit VDD 2.5V to 3.6V Cin AH1804 Output GND Note: Cin is for power stabilization and to strengthen the noise immunity, C = 100nF or higher must be used. AH1804 Document number: DS35314 Rev. 1 - 2 1 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH NEW PRODUCT Pin Descriptions Pin Name P/I/O VDD P/I Power Supply Input Ground Notes: GND P/I Output O NC NC Description Output Pin No Connection (Note 1) 1. NC is “No Connection” which is not connected internally. This pin can be left open or tied to ground. Functional Block Diagram VDD Sleep/Awake Logic and Power Switch Offset Cancellation Hall Plate Offset Cancellation Hall Plate Latch Amp Output Driver Controller Output GND Amp Latch Absolute Maximum Ratings (TA = 25°C, Note 2) Symbol VDD Characteristics Supply voltage (Note 3) VDD rev Reverse supply voltage Notes: B Ts Magnetic flux density Storage Temperature Range PD Package Power Dissipation TJ Maximum Junction Temperature Values 5.0 Unit V -0.3 V Unlimited -65 to +150 DFN1216-4 °C 230 mW 150 °C 2. Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating condition for extended periods may affect device reliability. 3. The absolute maximum of 5V is a transient stress rating and is not meant as functional operating conditions. It is not recommended to operate the device at the absolute maximum rated conditions for any period of time. AH1804 Document number: DS35314 Rev. 1 - 2 2 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH Recommended Operating Conditions (TA = 25°C) Symbol VDD TA NEW PRODUCT Notes: Characteristics Supply Voltage Operating Temperature Range Conditions Rating Unit CIN =0.1µF (Note 4) 2.5 to 3.6 V Operating -40 to +85 °C 4. Decoupling capacitor CIN = 100nF or higher must be used for full 2.5V to 3.6V supply range. Electrical Characteristics (TA = 25°C, VDD = 3.3V, unless otherwise specified) Symbol Characteristics VOL Output Low Voltage (on) VOH Output High Voltage (off) Idd(en) Idd(dis) Supply current Idd(avg) Min Typ. Max Unit IOUT = 1mA Conditions ⎯ 0.1 0.2 V IOUT = -1mA VDD-0.2 VDD-0.1 ⎯⎯ V Chip enable ⎯ 4 ⎯ mA Chip disable ⎯ 8 ⎯ µA Average supply current, ⎯ 12 ⎯ µA Tawake Awake Time (Note 5) ⎯ 50 100 µs Tperiod Period (Note 5) ⎯ 50 100 ms ⎯ 0.1 ⎯ % D.C. Notes: Duty Cycle 5. When power is initially on, the operating VDD (2.5V to 3.6V) must be applied to be guaranteed for the output sampling. The output state is valid after the second operating phase (typical 100ms). AH1804 Document number: DS35314 Rev. 1 - 2 3 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH Magnetic Characteristics (TA = 25°C, VDD = 3.3V, Note 6) Symbol Bops(south pole to brand side) Operation Point Bopn(north pole to brand side) Brps(south pole to brand side) Release Point Bhy (|Bopx|-|Brpx|) Max 20 40 60 -60 -40 -20 15 32 - - -32 -15 8 - Hysteresis Unit Gauss 6. The magnetic characteristics may vary with operating temperature and after soldering. Output Vcc ( off-state ) Turn on ( on-state ) Bhy Turn off Output ( Output Voltage ) ( Output Voltage ) NEW PRODUCT Brpn(north pole to brand side) Notes: (1mT=10 Gauss) Min Typ. Characteristics Document number: DS35314 Rev. 1 - 2 Turn off Vsat Vsat Bopn Brpn 0 ( Magnetic flux density B ) AH1804 ( off-state ) Bhy Vcc Turn on ( on-state ) 0 Brps Bops ( Magnetic flux density B ) 4 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH Typical Characteristics Typical Switch Points Bop and Brp vs. Supply Voltage Average Supply Current vs. Temperature Average Supply Current vs. Supply Voltage NEW PRODUCT Typical Switch Point Bop and Brp vs. Temperature AH1804 Document number: DS35314 Rev. 1 - 2 5 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH Ordering Information AH1804 - FA - 7 X Packing NEW PRODUCT Package 7 : Tape & Reel FA : DFN1216-4 Device (Note 8) AH1804-FA-7 Notes: Magentic Characteristics - Blank : Option 1 (Note 7) 7” Tape and Reel Package Code Packaging (Note 9) Quantity Part Number Suffix FA DFN1216-4 3000/Tape & Reel -7 Magentic Characteristics (Note 7) -Blank 7. Please refer the Magnetic Characteristics table. 8. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 9. 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 Marking Information (1) DFN1216-4 ( Top View ) Pin 1 indicator XX YWX 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 : Internal code Part Number Package Identification Code AH1804-FA-7 DFN1216-4 KJ AH1804 Document number: DS35314 Rev. 1 - 2 6 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH Package Outline Dimensions (All Dimensions in mm) 0/0.05 0.13Typ. (1) Package type: DFN1216-4 Seating Plane Side View 0.08 C C 0.65Typ. Pin#1 A 0.65Typ. CL 0.2/0.3(4x) 0.75/0.95 2X- 0.25(4x) 1.0 Top View Land Pattern Recommendation (Unit:mm) 0.25 B 0.175(4x) Bottom View AH1804 Document number: DS35314 Rev. 1 - 2 CL Hall sensor 0.55/0.75 C0.2 1.55/1.65 1.15/1.25 0.35(4x) B 0.8 1.40 2X- 0.25 A NEW PRODUCT 4x 0.47/0.53 Top Mark 0.10 C 0.15/0.25 (4x) 0.10 7 of 9 www.diodes.com C A B June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH Taping Orientation (Note 10) NEW PRODUCT DFN1216-4 Notes: 10. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. AH1804 Document number: DS35314 Rev. 1 - 2 8 of 9 www.diodes.com June 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH IMPORTANT NOTICE NEW PRODUCT 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 © 2011, Diodes Incorporated www.diodes.com AH1804 Document number: DS35314 Rev. 1 - 2 9 of 9 www.diodes.com June 2011 © Diodes Incorporated