Product Overview
The AH1911/AH1921 are ultra-low power digital Omnipolar Hall Effect switch ICs designed for battery-powered consumer products, utility meters, smoke detectors, and IoT devices. Featuring a hibernating clocking system with an average supply current of 1.6A at 3V and a wide supply voltage range of 1.6V to 5.5V, these devices offer extended battery life and design flexibility. Their chopper-stabilized design ensures superior stability over temperature and supply voltage variations, while a high ESD level of up to 6kV enhances system robustness. The AH1911 provides a push-pull output, and the AH1921 offers an open-drain output, both activated by either the North or South pole of a magnet.
Product Attributes
- Brand: Diodes Incorporated
- Product Family: Hall Effect Switches
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
- Package: SC59
Technical Specifications
| Parameter | AH1911 (Push-Pull) | AH1921 (Open Drain) | Conditions | Min | Typ | Max | Unit |
| Supply Voltage (VDD) | 1.6 to 5.5 | Operating | 1.6 | - | 5.5 | V | |
| Operating Temperature | -40 to +85 | Operating | -40 | - | +85 | C | |
| Average Supply Current (IDD_AVG) | 1.6 | 1.6 | VDD=3V, TA=+25C | - | 1.6 | 3 | A |
| Average Supply Current (IDD_AVG) | 1.6 | 1.6 | VDD=1.6V to 5.5V, TA=-40 to +85C | - | 1.6 | 9 | A |
| Awake Time (tAWAKE) | 30 | - | 30 | 45 | 80 | s | |
| Period (tPERIOD) | 30 | - | 30 | 45 | 80 | ms | |
| Output Low Voltage (VOL) | 0.1 | - | IOUT=0.1mA | - | 0.1 | 0.2 | V |
| Output High Voltage (VOH) | VDD-0.2 | - | IOUT=-0.1mA | - | VDD-0.1 | VDD | V |
| Output On Voltage (VOUT) | - | 0.1 | IOUT=0.1mA | - | 0.1 | 0.2 | V |
| Output Leakage Current (IOFF) | - | < 0.1 | VOUT=5.5V, Output off | - | < 0.1 | 1 | A |
| Operation Point (BOPS, South Pole) | 30 | VDD=1.6V to 5.5V, TA=-40C to +85C | 30 | 60 | 90 | Gauss | |
| Operation Point (BOPN, North Pole) | -90 | VDD=1.6V to 5.5V, TA=-40C to +85C | -90 | -60 | -30 | Gauss | |
| Release Point (BRPS, South Pole) | 22 | VDD=1.6V to 5.5V, TA=-40C to +85C | 22 | 45 | 67 | Gauss | |
| Release Point (BRPN, North Pole) | -67 | VDD=1.6V to 5.5V, TA=-40C to +85C | -67 | -45 | -22 | Gauss | |
| Hysteresis (BHY) | 15 | - | - | 15 | - | Gauss | |
| ESD Capability (HBM) | 6 | - | - | - | 6 | kV | |
2308101658_DIODES-AH1911-W-7_C5246112.pdf
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