AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH General Description Features • • • • • • • • • AH1822 is comprised of two Hall effect plates and an open-drain output driver, mainly designed for battery-operation, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total power consumption in normal operation is typically 24μW with a 3V power source. Micropower operation Operation with magnetic field of either north or south pole (omnipolar) 2.5V to 5.5V battery operation Chopper stabilized • Superior temperature stability • Extremely Low Switch-Point Drift • Insensitive to Physical Stress Good RF noise immunity -40°C to 85°C operating temperature ESD (HBM) ＞ 5KV DFN2015-6 and DFN3020-6: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) 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 operating point (Bop), the output will be turned on (low), the output is held until B is lower than release point (Brp), then turned off. Applications • • • Cover switch in clam-shell cellular phones Cover switch in Notebook PC/PDA Contact-less switch in consumer products Ordering Information AH 1822 - XXX G - 7 Package FT4 : DFN2015-6 FU4 : DFN3020-6 Device AH1822-FT4G-7 AH1822-FU4G-7 Notes: Package Code FT4 FU4 Green G : Green Packaging (Note 2) DFN2015H4-6 DFN3020H4-6 Packing 7 : Tape & Reel 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, see EU Directive 2002/95/EC Annex Notes. 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. AH1822 Rev. 5 1 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Pin Assignments ( Top View ) ( Top View ) NC Vdd 1 6 NC 2 5 Output GND 3 4 GND Output 1 6 Vdd NC 2 5 NC GND 3 4 GND DFN2015-6 Notes: 3. DFN3020-6 NC is “No Connection” which is recommended to be tied to ground. Pin Descriptions Pin Name Vdd GND Output NC P/I/O P/I P/I O NC Description Power Supply Input Ground Output Pin No Connected Block Diagram Vdd Power switch Offset Cancelling Hall Plate Amp Latch Output Logical GND AH1822 Rev. 5 Offset Cancelling Hall Plate Amp 2 of 9 www.diodes.com Latch FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Typical Circuit 2.5~5.5V RL C Output AH1822 GND Notes: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF. RL is the pull-up resistor, the recommended resistance is 10KΩ~100KΩ. Absolute Maximum Ratings Symbol Vdd B TST PD TJ (at TA= 25°C) 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 Symbol Vdd TA AH1822 Rev. 5 Parameter Supply Voltage Operating Temperature Range Conditions Rating Unit Operating Operating 2.5~5.5 -40 to +85 V °C 3 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Electrical Characteristics Symbol Characteristic Vout Output On Voltage Ioff Output Leakage Current Idd(en) Idd(en) Idd(dis) Idd(dis) Supply Current Idd(avg) Idd(avg) FC Tawake Tperiod D.C. Notes: (TA = +25°C, Vdd = 3V; unless otherwise specified) Chopping Frequency Awake Time Period Duty Cycle Conditions Iout=1mA Vout=5.5V, Output off Chip enable , TA= 25°C , Vdd = 3V Chip enable , TA= -40~85°C , Vdd = 2.5~5.5V Chip disable , TA= 25°C , Vdd = 3V Chip disable , TA= -40~85°C , Vdd = 2.5~5.5V Average supply current , TA= 25°C , Vdd = 3V Average supply current , TA= -40~85°C , Vdd = 2.5~5.5V For design information only (Note 5) (Note 5) Min Typ. Max Unit ⎯ ⎯ ⎯ 0.1 <0.1 3 0.3 1 6 V µA mA ⎯ 3 10 mA ⎯ 5 10 µA ⎯ 5 18 µA ⎯ 8 16 µA ⎯ 8 28 µA ⎯ ⎯ ⎯ ⎯ 300 75 75 0.1 ⎯ 150 150 ⎯ KHz µs ms % 5. When power is initially on, the operating Vdd (2.5V 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) Sample and output latched Idd (dis) 0 AH1822 Rev. 5 4 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Magnetic Characteristics Symbol Characteristic 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=25°C, Vdd=3V, Note 6, 7) Operate Point Release Point (1mT=10 Gauss) Max Unit Min Typ. -55 10 - 28 -28 20 -20 55 -10 5 8 - Hysteresis Gauss 6. Typical data is at Ta = 25°C, Vdd = 3V, and for design information only. 7. Operating point and release point will vary with supply voltage and operating temperature. Output ( Output Voltage ) ( Output Voltage ) Output Vcc ( off-state ) Turn off Bhy Turn on ( on-state ) ( off-state ) Turn off Bhy Turn on ( on-state ) Vsat Vsat Vcc Bopn Brpn 0 ( Magnetic flux density B ) 0 Brps Bops ( Magnetic flux density B ) Performance Characteristics TA (°C) 25 50 60 70 80 85 90 100 110 120 130 140 150 PD (mW) 230 184 166 147 129 120 110 92 74 55 37 18 0 P D (m W ) P o w e r D is s ip a tio n C u rv e 300 200 100 0 0 25 50 75 85 100 125 150 T A (。 C ) AH1822 Rev. 5 5 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Marking Information (1) DFN2015-6 ( Top View ) 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 XX YWX Part Number AH1822 Package DFN2015-6 Identification Code K7 (2) DFN3020-6 ( Top View ) XX YW X Part Number AH1822 AH1822 Rev. 5 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 DFN3020-6 6 of 9 www.diodes.com Identification Code K8 FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Package Information (All Dimensions in mm) 2xaaa A (1) Package type: DFN2015-6 1.45/1.575 A 1.95/2.075 B aaa B 0.13Typ. Seating Plane 4x-0.50 4x-0.50 C (Pin #1) (Pin #1) 6x-0.75 1.0/1.2 0.20/0.30 2.0 0.7/0.9 0.08 C 0.40Max. 6x- (Pin #1) 0/0.05 ccc C 0.25/0.35 2x- C A B bbb 6x-0..30 Bottom View Land Pattern Recommendation (Unit:mm) 2X- aaa A (2) Package type: DFN3020-6 1.95/2.075 A aaa B 6x- 0.08 C 0/0.05 (Pin #1) Seating Plane 0.40Typ. ccc C 0.50Typ. C A B 3.0 0.50/0.60 1.124/1.324 (Pin #1 ID) bbb 0.942/1.142 0.20/0.30 Bottom View AH1822 Rev. 5 6x-0.30 C 4x-0.75 2X- 0.15Typ. 2.95/3.075 B (Pin #1) 4x-0.50 Land Pattern Recommendation (Unit: mm) 7 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH Taping Orientation (1) DFN2015-6 (2) DFN3020-6 Notes: 8. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. AH1822 Rev. 5 8 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1822 MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AH1822 Rev. 5 9 of 9 www.diodes.com FEBRUARY 2009 © Diodes Incorporated