The A3240 Hall-effect switch is a high-temperature sensor that features temperature stability and resistance to stress, and can operate over extended temperature ranges up to +150°C.
The document describes the Allegro MicroSystems A3240, a chopper-stabilized, precision Hall-effect switch designed for operation over extended temperature ranges up to +150°C. The device integrates a voltage regulator, Hall-voltage generator, amplifier, and Schmitt trigger on a single silicon chip.
| Supply Voltage Range | 4.2 - 24 V |
|---|---|
| Continuous Output Current | 25 mA |
| Operate Point Magnetic Flux Density | Typ. 35 G |
| Release Point Magnetic Flux Density | Typ. 25 G |
The absolute maximum rating for supply voltage is 26.5 V.
Yes, it features a short-circuit protected open-collector output that can sink up to 25 mA.
The typical chopping frequency is 340 kHz.