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SOT23.pngLow-Voltage, High-Sensitivity Automotive Hall Effect Latch Switch
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The AH1711Q/AH1712Q/AH1713Q/AH1714Q is an AEC-Q100 qualified low-voltage, high-sensitivity Hall effect latch IC designed for brushless DC-motor commutation speed measurement, angular or linear encoders and position sensors in automotive applications. To support a wide range of demanding applications, the design is optimized to operate at 2.4V to 5.5V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the device provides a reliable solution over the whole operating range.
The open-drain output of AH1711Q/AH1712Q/AH1713Q can be switched on when applying South pole with sufficient magnetic near the top of the package, while North pole with sufficient magnetic strength causes the open-drain output switched off (AH1714Q polarity inverted). When the magnetic flux density (B) perpendicular to the package is larger than the operate point (Bop) the output is switched on (pulled low). The output is held latched until magnetic flux density reverses and becomes lower than the release point (Brp).
| Compliance(Only Automotive supports PPAP) | Automotive |
|---|---|
| AEC Qualified | Yes |
| Type | Latch |
| Outputs | Single |
| Output Type | Open Drain |
| Active Output State (B > Bop) | Low |
| Inactive Output State (B < Brp) | High-Z |
| Operating Voltage (V) | 2.4 to 5.5 |
| Average Supply Current (mA) | 2 |
| Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 15 |
| Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 50 |
| Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 88 |
| Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -88 |
| Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -50 |
| Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -15 |
| Operating Ambient Temperature (°C) | -40 to 150 |
