AH1803

AH1803 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH 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 -40°C to 85°C operating temperature Low profile 3 pin SC59 (commonly known as SOT23 in Asia) and DFN2020-6 package ESD (HBM) ＞ 4KV for DFN2020-6 Lead Free Finish / RoHS Compliant (Note 1) Green Packages: SC59 and DFN2020-6 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 Ordering Information AH1803 - X X X Package W : SC59 SN : DFN2020-6 Lead Free G: Green Packing -7 : Taping Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device AH1803-W AH1803-SN Note: 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 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. AH1803 Rev. 1 1 of 7 www.diodes.com JULY 2007 © Diodes Incorporated AH1803 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Pin Description Name Vdd GND Output P/I/O P/I P/I O Pin # 1 2 3 Description Power Supply Input Ground Output Pin Pin Assignment SC59 DFN2020-6 3. Output GND 2. 1. Vdd 1. Vdd NC 3. Output Top view NC 2. GND NC Bottom view Note: 3. NC is “No Connection”, which is recommended to be tied to ground. Block Diagram 1 Power switch Offset Cancelling Offset Cancelling Hall Plate Vdd Amp Latch Logical Hall Plate 3 Out Amp Latch 2 GND AH1803 Rev. 1 2 of 7 www.diodes.com JULY 2007 © Diodes Incorporated AH1803 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Typical Circuit Vdd A H 1803 G nd O u tp u t Absolute Maximum Ratings Symbol Vdd B TA Ts PD TJ (@ TA = 25°C) Characteristics Supply voltage Magnetic flux density Operating Temperature Range Storage Temperature Range Package Power Dissipation Maximum Junction Temperature (TA = 25°C) SC59 DFN2020-6 Values 7 Unlimited -40 to +85 -65 to +150 230 230 150 Unit V °C °C mW mW °C Recommended Operating Conditions Symbol Vdd Parameter Supply Voltage Operating Conditions Rating 2.4~5.5 Unit V AH1803 Rev. 1 3 of 7 www.diodes.com JULY 2007 © Diodes Incorporated AH1803 MICROPOWER, ULTRA-SENSITIVE HALL EFFECT SWITCH Electrical Characteristics Symbol Vout Ioff Idd(en) Characteristic Output On Voltage Output Leakage Current (TA = +25°C, Vdd = 3V; unless otherwise specified) Conditions Iout =1mA Vout = 5.5V, Brpn < B < Brps Chip enable, TA = 25°C, Vdd = 3V Chip enable, TA = -40~85°C, Vdd = 2.4~5.5V Chip disable, TA = 25°C, Vdd = 3V Chip disable, TA = -40~85°C, Vdd = 2.4~5.5V Average supply current, TA = 25°C, Vdd = 3V Average supply current, TA= -40~85°C, Vdd = 2.4~5.5V Min - Typ 0.1