ATS344: High-Precision Linear Hall-Effect Sensor IC with Two-Wire Current-Mode PWM Output and an Integrated Rare-Earth Pellet Package


The ATS344 device is a high precision, back-biased programmable Hall effect linear sensor integrated circuits (IC) with a configurable current mode pulse width modulated output, for both automotive and non-automotive applications. The signal path of the ATS344 provides flexibility through external programming that allows the generation of an accurate, and customized output response from a ferro-magnetic target perturbation. The ATS344 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 ideal for automotive applications requiring high resolution detection of long stroke (>5mm) 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% matte-tin lead-frame plated 3-pin SP package.

The ATS344 is ideally suited to the following markets & applications:

  • Automotive
  • Transmission position detection
  • Determining the location of a shaft that both spins and translates

Top Features

  • 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 coeff icient 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

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
ATS344LSPTN-T 3-lead SIP -40°C to 150°C -- View Data Contact your
local sales rep
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.