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A16601 Datasheet AC-Coupled Differential Crankshaft Speed Sensor

Manufacturer: Allegro MicroSystems

General Description

The A16601 AC-coupled Hall-effect sensor IC is a monolithic integrated circuit that switches in response to changing differential magnetic fields created by rotating ring magnets and, when coupled with a magnet, by ferrous targets.

The device is a true zero-crossing detector: the output switches precisely when the difference in magnetic field strength between the two Hall elements is zero.

A unique dual-comparator scheme provides for accurate switching at the zero crossing on both the positive and negative-going regions of the differential signal while using hysteresis to prevent false switching.

Overview

A16601 AC-Coupled Differential Crankshaft Speed Sensor IC.

Key Features

  • Integrated bypass capacitors reduce requirements for external EMI protection components.
  • Resistant to mechanical and thermal stress.
  • Dual zero-crossing output signal.
  • Expanded operation range with magnet target from 20 Hz to 25 kHz.
  • Reverse battery protection.
  • Senses ring magnet or magnetic target motion.
  • Expanded temperature range :.
  • 40°C to 160°C.