Product Overview
The AH1887 is a micropower, ultra-sensitive Hall effect switch designed for battery-powered, handheld equipment. It features two Hall effect plates and a dual CMOS output driver, offering low power consumption down to 15uW at a 1.8V supply. The device activates its outputs when exposed to a sufficiently strong magnetic field (either north or south pole) and deactivates when the field is removed. Output1 responds to a South pole, and Output2 responds to a North pole, with distinct operate and release points. Its chopper-stabilized design ensures superior temperature stability and minimal switch-point drift. The AH1887 is ideal for applications requiring sensitive magnetic detection in compact, power-constrained devices.
Product Attributes
- Brand: Diodes Incorporated
- Certifications: "Green" Molding Compound (RoHS compliant)
Technical Specifications
| Parameter | Conditions | Min | Typ. | Max | Unit |
| Electrical Characteristics | |||||
| Output On Voltage (High side) | IO= -0.5mA | - | - | Vdd-0.2 | V |
| Output On Voltage (Low side) | IO= 0.5mA | - | - | 0.2 | V |
| Supply Current (Chip enable) | - | - | 2 | 4 | mA |
| Supply Current (Chip disable) | - | - | 5 | 8 | uA |
| Average Supply Current | - | - | 7 | 12 | uA |
| Awake Time | - | - | 50 | 100 | s |
| Period | - | - | 50 | 100 | ms |
| D.C. Duty Cycle | - | 0.1 | - | - | % |
| Magnetic Characteristics (1mT=10 Gauss) | |||||
| Operate Point (South pole to brand side) | Vdd = 1.8V~3.0V | - | 35 | 50 | Gauss |
| Operate Point (North pole to brand side) | Vdd = 1.8V~3.0V | -50 | -35 | - | Gauss |
| Release Point (South pole to brand side) | Vdd = 1.8V~3.0V | 6 | 20 | - | Gauss |
| Release Point (North pole to brand side) | Vdd = 1.8V~3.0V | - | -20 | -6 | Gauss |
| Hysteresis (|Bopx|-|Brpx|) | Vdd = 1.8V~3.0V | 3 | 15 | - | Gauss |
| Recommended Operating Conditions | |||||
| Supply Voltage | Operating | 1.65 | - | 3.3 | V |
| Operating Temperature Range | Operating | -40 | - | 85 | C |
2004082132_DIODES-AH1887-ZG-7_C507859.pdf
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