AH1921 Datasheet | Diodes Incorporated

AH1911/AH1921 ULTRA-LOW POWER DIGITAL OMNIPLOAR HALL-EFFECT SWITCH NEW PRODUCT Description The AH1911/AH1921 is an ultra-low power digital Omnipolar Hall Effect switch IC from Diodes broad Hall Effect switches family. Thanks to the hibernating clocking system, the average supply current is only 1.6μA at 3V, which makes the AH1911/AH1921 perfectly fit battery-powered consumer products, Gas or water meter, smoke detectors and Io T devices. The wider range of supply voltage (1.6V to 5.5V) extends battery operating time and supports low voltage system microcontrollers, which provides great flexibility for system design. The advanced chopper stabilized design provides superior stability on switch operating point over temperature and supply voltage. The high ESD level up to 6k V helps to improve the system robustness. The single push-pull for AH1911 or open drain for AH1921 output can be switched on with either South or North pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (BOP), the output will be turned on (pulled low) and held until B is lower than release point (BRP). Pin Assignments (Top View) GND 3 2 OUTPUT 1 VDD SC59 The AH1911/AH1921 es with industry standard SC59 package. Features Applications - Omnipolar Operation (North or South Pole) - Supply Voltage of 1.6V to 5.5V - Micropower Operation - Chopper Stabilized Design Provides: - Superior Temperature Stability - Minimal Switch Point Drift - Enhanced Immunity to Physical Stress - AH1911 is Push-Pull Output and AH1921 is Open Drain Output - -40°C to +85°C Operating Temperature - High ESD Capability of 6k V (Human Body Model) - Small Low Profile, SC59 Package - Totally Lead-Free & Fully Ro HS pliant (Notes 1 & 2) - Halogen and Antimony Free. “Green” Device (Note 3) - Smart Cover or Dock Detect for Cellular Phones and Tablet PCs - Gas or Water Consumption Measurement in Remote, Battery- Operated Utility...