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SOT25.pngDual Hall Effect Latch with Speed & Direction Output
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The AH3965/AH3966/AH3967/AH3968 is a high voltage dual Hall-effect sensor designed for the applications that require accurate speed and direction sensing. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 2.7V to 27V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3965/AH3966/AH3967 provides speed and direction outputs, while the AH3968 provides two independent outputs at Q1 and Q2.
For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply.
In the occasion of a supply voltage drop to minimum threshold point, undervoltage lockout protection would be triggered to freeze the device, which prevents the electrical malfunction from affecting the next magnetic measurement circuits, and the output current state updated is always based on the proper accurate measurement result.
| Compliance(Only Automotive supports PPAP) | Standard |
|---|---|
| AEC Qualified | No |
| Type | Latch |
| Outputs | Dual |
| Output Type | Open Drain |
| Active Output State (B > Bop) | Low |
| Inactive Output State (B < Brp) | High-Z |
| Operating Voltage (V) | 2.7 to 27 |
| Average Supply Current (mA) | 4.7 |
| Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 50 |
| Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 75 |
| Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) | 100 |
| Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -100 |
| Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -75 |
| Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) | -50 |
| Operating Ambient Temperature (°C) | -40 to 125 |
