New Industry Products

Back-Biased Differential Linear Hall Sensor IC with Integrated Magnet

April 24, 2018 by Paul Shepard

Allegro MicroSystems Europe has introduced a new high precision, back-biased, programmable Hall-effect sensor IC. Allegro’s ATS344 includes differential Hall elements and is packaged in a custom back-biased package that includes an integrated magnet.

This new device incorporates a 2-wire current mode PWM output in order to help minimize pin count for remote sensors. It also includes on-chip EEPROM technology, capable of supporting up to 100 read/write cycles, for flexible end-of-line programming of calibration parameters.

The ATS344 is designed for automotive applications requiring high resolution detection of long stroke (>5 mm) linear motion.

The integrated back-bias magnet greatly simplifies packaging for the customer, requiring only a ferrous target to detect. The ATS344 is offered in a Pb free, 100% matt-tin leadframe plated 3-pin SP package.

Features and benefits include:

  • Magnetic sensor IC with integrated rare-earth pellet
  • Two-wire current mode PWM (pulse-width modulation) output
  • Customer-programmable position range selection and offset, bandwidth, output clamps, and temperature compensation
  • Sensitivity temperature coefficient and offset drift preset at Allegro
  • Temperature-stable, mechanical stress immune, and low noise device output via proprietary active stress compensation and four-phase chopper stabilization design techniques
  • Wide ambient temperature range: –40°C to 150°C
  • Operates with 3.75 to 9.5 V supply voltage
  • Differential linear signal processing
  • AEC-Q100 qualified