Allegro Hall Effect Switch Unipolar South Pole SIP-3

The Allegro Hall Effect Switch SIP-3 is a unipolar Hall-effect switch with south pole sensing, designed for position, speed and proximity detection in a three-pin SIP package.

Manufactured using BiCMOS technology, this device integrates a voltage regulator, Hall voltage generator, small-signal amplifier, Schmitt trigger and an NMOS output transistor on a single silicon chip. Factory programming after packaging reduces offsets caused by package stress, and unique Hall element geometries with low-offset amplifiers help minimise noise and residual offset voltage. This supports increased switch point accuracy and stable operation across the full temperature range.

It is designed as a drop-in replacement for the Allegro 312x and 314x lines.

Key Features

• Unipolar south pole sensing
• Supply voltage range from 3.8V to 24V
• AEC-Q100 qualified for automotive applications
• Reverse battery protection
• Robust EMC performance and high ESD rating
• Regulator stability without a bypass capacitor
• Continuous-time operation for fast power-on and low noise
• 3-pin SIP package with operating temperature range from -40°C to 85°C

Applications

This Hall-effect switch is suited to position sensing, speed detection and proximity applications in demanding environments, including automotive use given its AEC-Q100 qualification.

Specifications

• Package: SIP-3
• Output Type: Voltage
• Output Transistor: NMOS
• Technology: BiCMOS
• Weight: 5 g

Choose the Allegro Hall Effect Switch SIP-3 when you need a unipolar south pole Hall-effect switch with a wide supply range and automotive qualification for position, speed and proximity sensing.