AH1801-WG-7

AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH General Description Features • • • • • • • • • • • Micropower operation Operation with North or South Pole 2.5V to 5.5V battery operation Inverted Output-on without Magnet present 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 Low profile 3 pin SC59 (commonly known as SOT23 in Asia) and DFN2020-3, DFN2020-6 package ESD (HBM) ＞ 5KV for DFN2020-3 and DFN2020-6 ＞ 6KV for SC59 SC59, DFN2020-3 and DFN2020-6: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish / RoHS Compliant (Note 1) AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which is with two Hall effect plates and a 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 off. The output will be turned on under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output will be turned off, the output is held until B is lower than release point (Brp), then turned on. Applications • • • Cellular phone PDA Cordless phone Ordering Information AH1801 - XX G - 7 Device AH1801-WG-7 AH1801-FJG-7 AH1801-SNG-7 Notes: Package Green Packing W : SC59 FJ : DFN2020-3 SN : DFN2020-6 G : Green 7 : Tape & Reel Package Code W FJ SN Packaging (Note 2) SC59 DFN2020-3 DFN2020-6 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 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. AH1801 Rev. 7 1 of 10 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Pin Assignment (1) SC59 (2) DFN2020-3 ( Top View ) ( Top View ) 3. GND 2. Output GND 3. 1. Vdd 1. Vdd 3. Output (3) DFN2020-6 ( Top View ) Notes: 6. NC 5. GND 1. Vdd 2. NC 4. NC 3. Output 3. NC is “No Connection”, which is recommended to be tied to ground. Pin Descriptions Pin Name Vdd GND Output NC AH1801 Rev. 7 P/I/O P/I P/I O Description Power Supply Input Ground Output Pin No Connected 2 of 10 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Block Diagram Vdd 1 Power switch Offset Cancelling Hall Plate Output Latch Amp 3 Logical GND 2 Offset Cancelling Hall Plate Amp Latch Typical Circuit 2.5~5.5V RL C AH1801 Output 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. AH1801 Rev. 7 3 of 10 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Absolute Maximum Ratings Symbol Vdd B Ts Characteristics Supply voltage Magnetic flux density Storage Temperature Range PD TJ (at TA = 25°C) Values 7 Unlimited -65 to +150 SC59 DFN2020-3 DFN2020-6 Package Power Dissipation Maximum Junction Temp Recommended Operating Conditions Symbol Vdd TA Parameter AH1801 Rev. 7 °C 230 mW 150 °C Rating Unit 2.5~5.5 -40 to +85 V °C (TA = 25°C) Conditions Supply Voltage Operating Temperature Range Unit V Operating Operating 4 of 10 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AH1801 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Electrical Characteristics Symbol Vout Ioff Characteristic Output On Voltage Output Leakage Current Idd(en) Idd(dis) Supply Current Idd(avg) Tawake Tperiod D.C. Notes: (TA = +25°C, Vdd = 3V; unless otherwise specified) 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 (Note 5) (Note 5) Min Typ Max Unit - 0.1