Micropower Omnipolar Hall Effect Switch
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The AH1812 is a high sensitivity micropower Omnipolar Hall effect switch IC with open drain for pull up flexibility. Designed for portable and battery powered equipment such as cellular phones and portable PCs, the average supply current is only 4.3µA at 1.85V. To support portable equipment the AH1812 can operate over the supply range of 1.6V to 3.6V and uses a hibernating clocking system to minimize the power consumption. To minimize PCB space the AH1812 is available in small low profile packages. The single opend drain output is activated with either a north or south pole of sufficient magnetic field 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). The output will remain off when there is no magnetic field. The AH1812 is available in a small low profile X1-DFN1216-4 package.
| # Outputs | 1 |
|---|---|
| ActiveHigh orLow | Low |
| Active Output State (B > Bop) | Low |
| AEC Qualified | No |
| Compliance (Only Automotive supports PPAP) | No |
| Average Supply Current (µA) | 4.3 |
| Average Supply Current (mA) | 0.0043 |
| Compliance (Only Automotive supports PPAP) | Standard |
| Compliance(Only Automotive supports PPAP) | Standard |
| Inactive Output State (B < Brp) | High-Z |
| Max OperatingPoint ±Bop(Guass) | 40 |
| Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 40 |
| Max ReleasePoint ±Brp(Guass) | 35 |
| Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | 35 |
| Min OperatingPoint ±Bop (Guass) | 16 |
| Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 16 |
| Min ReleasePoint ±Brp(Guass) | 11 |
| Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | 11 |
| Operating Ambient Temperature (°C) | -40 to 85 |
| Operating Ambient Temperature Range (°C) | -40 to 85 |
| Operating Voltage (V) | 1.6 to 3.6 |
| Operating Voltage (V) | 1.6 to 3.6 |
| Output Type | Open Drain |
| Outputs | Single |
| AEC Qualified | No |
| Sensitivity | High |
| Typ OperatingPoint ±Bop(Guass) | 30 |
| Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 30 |
| Typ ReleasePoint ±Brp(Guass) | 20 |
| Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | 20 |
| Type | Omnipolar |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2587 | 2022-05-13 | 2022-11-13 | Device End of Life (EOL) |
| PCN-2512 | 2021-04-16 | 2021-07-16 | Qualified Additional Assembly & Test (A/T) Site |
