A33115: Precision TMR Angle Sensor with Integrated Diagnostics and Turns Counter

Allegro LE 14 Package Image


Top Features

The A33115 is a 360° angle sensor ICs that provide contactless high-resolution angular position information based on magnetic sensing that combines TMR (Tunneling MagnetoResistance) and VH (Vertical Hall) technologies.

The device is a system-on-chip (SoC) architecture that includes two independent angle sensing channels, digital signal processing, and output options: SPI, PWM, motor commutation (U, V, W), and encoder outputs (A, B, I).

Also integrated into the devices are on-chip EEPROM technology, capable of supporting a high number of read/write cycles for flexible end-of-line programming of calibration parameters.

  • Primary TMR channel capable of 14-bit noise-free resolution 
  • Secondary channel capable of 10-bit noise-free resolution
  • Wide operating voltage (3.7 to 18 V) enables direct connection to vehicle battery
  • Low Power Mode where the IC monitors and maintains turns count of the magnet in a key-off condition
  • Linearization to reduce error from misalignment between the sensor and target magnet
  • AEC-Q100 grade 1 
  • Designed to meet ASIL D requirements when used in conjunction with appropriate system-level control 

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
A33115KLEATR 14-lead TSSOP -40°C to 125°C Yes View Data New 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.