AH1822 Datasheet | Diodes Incorporated

Description AH1822 is prised 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. 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. Pin Assignments ( Top View ) NC 1 Vdd 2 GND 3 6 NC 5 Output 4 GND X2-DFN2015-6 Features - 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) ＞ 5k V - Totally Lead-Free & Fully Ro HS pliant (Notes 1 & 2) - Halogen and Antimony Free. “Green” Device (Note 3) Note: 4. NC is “No Connection” which is remended to be tied to ground. Applications - Cover Switch in Clam-Shell Cellular Phones - Cover Switch in Notebook PC/PDA - Contact-Less Switch in Consumer Products Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (Ro HS), 2011/65/EU (Ro HS 2) & 2015/863/EU (Ro HS 3) pliant. 2. See https://.diodes./quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony pounds. Typical Applications Circuit 2.5V to 5.5V C AH1822 RL Output Note: 5. C is for power stabilization and to strengthen the noise immunity, the remended capacitance is 10n F to 100n F. RL is the...