AH1885-Z

AH1885 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Features • • • • Micropower operation Operation with North or South Pole 1.65 to 3.3V 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 ＞ 4KV in human body mode SOT553: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) General Description AH1885 is with two Hall effect plates and dual CMOS output driver, mainly designed for battery–powered, hand-held equipment (such as Cellular and Cordless Phone, PDA). The total operation power is down to 15uW in the 1.8V supply. Either north or south pole of sufficient strength will turn the output1 on. The output1 will be turned off under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output1 will be turned on (low), the output1 is held until B is lower than release point (Brp), then turned off. • • • • • Applications • • • Cellular phone PDA Cordless phone Ordering Information AH1885 - X X X Package Z : SOT553 Lead Free Packing -7 : Taping G : Green Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device AH1885-Z Note: Package Code Z Packaging (Note 2) SOT553 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 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. AH1885 Rev. 1 1 of 7 www.diodes.com SEPTEMBER 2007 © Diodes Incorporated AH1885 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Pin Assignment ( Top View ) 5 4 1 2 3 SOT553 Pin Descriptions Name Out 2 GND N.C. Vdd Out 1 P/I/O O P/I P/I O Pin # 1 2 3 4 5 Description Output Pin (active High) Ground No Connection Power Supply Voltage Output Pin (active Low) Block Diagram Vdd Power switch Offset Cancelling Offset Cancelling Hall Plate Amp Latch Out1 Logical Hall Plate GND Vdd Amp Latch Out2 GND AH1885 Rev. 1 2 of 7 www.diodes.com SEPTEMBER 2007 © Diodes Incorporated AH1885 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Typical Circuit Vdd Output 1 AH1885 Gnd Output 2 (Complement of Output 1) Absolute Maximum Ratings Symbol Vdd B TA Ts PD TJ (at TA = 25°C) Characteristics Supply voltage Magnetic flux density Operating Temperature Range Storage Temperature Range Package Power Dissipation Maximum Junction Temperature Values 5 Unlimited -40 to +85 -65 to +150 230 150 Unit V °C °C mW °C Recommended Operating Conditions Symbol Vdd Parameter Supply Voltage (TA = 25°C) Conditions Operating Rating 1.65~3.3 Unit V Electrical Characteristics Symbol VOH VOL Ioff Idd(en) Idd(dis) Idd(avg) Tawake Tperiod D.C. Characteristic (TA = +25°C, Vdd = 1.8V; unless otherwise specified) Conditions IO= -0.5mA IO= 0.5mA Output off Chip enable Chip disable average supply current Min Vdd-0.2 - Typ